Java 6, Woopra and Mac OS X 10.5 Please H:E:L:P
Hi people! i have a macbook, w/ 10.5.4 leopard and I need install Woopra ( www.woopra.com) but the system tell me that's imposiblle to install... any version of java, 5, 6 beta, all of them. anyone can help me please??
You already have Java 5 installed. If you need Java 6 you can download it from here.
Similar Messages
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Java 6, Woopra and Mac OS X 10.5
Hi people! i have a macbook, w/ 10.5.4 leopard and I need install Woopra ( www.woopra.com) but the system requeriments for that is Java 6 (still in beta)... but, when I tried to install Java 6, or the 5 version, said me that's impossible. *"This volume is not eligible for this update."*
anyone can help me please??? what must I do?You already have Java 5 installed. If you need Java 6 you can download it from here.
-
I'm in a java programming class and i'm stuck.. so please help me guys...
Please help me, i really need help.
Thanks a lot guys...
this is my error:
C:\Temp>java Lab2
Welcome!
This program computes the average, the
exams
The lowest acceptable score is 0 and th
Please enter the minimum allowable scor
Please enter the maximum allowable scor
Was Exam1taken?
Please Enter Y N or Q
y
Enter the Score for Exam1:
65
Was Exam2taken?
Please Enter Y N or Q
y
Enter the Score for Exam2:
32
Was Exam3taken?
Please Enter Y N or Q
y
Enter the Score for Exam3:
65
Was Exam4taken?
Please Enter Y N or Q
y
Enter the Score for Exam4:
32
Was Exam5taken?
Please Enter Y N or Q
y
Enter the Score for Exam5:
32
Score for Exam1 is:65
Score for Exam2 is:32
Score for Exam3 is:32
Score for Exam4 is:32
Score for Exam5 is:32
the Minimum is:0
the Maximum is:0
Can't compute the Average
Can't compute the Variance
Can't compute the Standard Deviation
this is my code:
// Lab2.java
// ICS 21 Fall 2002
// Read in scores for a student's exams, compute statistics on them, and print out
// the scores and statistics.
public class Lab2
// Create a manager for this task and put it to work
public static void main(String[] args)
ExamsManager taskManager = new ExamsManager();
taskManager.createResults();
// ExamsManager.java for Lab 2
// ICS 21 Fall 2002
// make these classes in the Java library available to this program.
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.io.IOException;
import java.text.NumberFormat;
// ExamsManager creates managers and contains the tools (methods) they need to do their
// job: obtaining exam information, computing statistics and printing out that information
class ExamsManager
// INVALID_INT: special integer value to indicate that a non-integer
// was entered when an integer was requested. It's chosen so as not to
// conflict with other flags and valid integer values
public static final int INVALID_INT = -9999;
// valid user response constants:
public static final String YES = "Y"; // user responded "yes"
public static final String NO = "N"; // user responded "no"
public static final String EXIT_PROGRAM = "Q"; // user responded "leave the program NOW"
// INVALID_RESPONSE: special String value to indicate that something other than
// "Y", "N" or "X" was entered when said was required
public static final String INVALID_RESPONSE = "!";
// ABSOLUTE_MIN_SCORE and ABSOLUTE_MAX_SCORE represent the smallest
// minimum score and the largest maximum score allowed by the
// program. (The allowable minimum and maximum for one
// execution of the program may be different than these, but
// they must both lie within this range.)
public static final int ABSOLUTE_MIN_SCORE = 0;
public static final int ABSOLUTE_MAX_SCORE = 1000;
// The manager needs a place to store this student's exams
private OneStudentsWork thisWork;
// ...places to store the min and max scores allowed for these exams
private int minAllowedScore;
private int maxAllowedScore;
// ...and a place to hold input coming from the keyboard
BufferedReader console;
// -------------------- Constructor --------------------
// ExamsManager() make managers that delegate the major tasks of the program
public ExamsManager()
// -------------------- Processing methods --------------------
// createResults() is the "manager at work": it calls assistants to welcome the user,
// initializes things so we can read info from the keyboard,
// obtain the minimum and maximum allowed scores,
// obtain a student's work and comute the statistics on it and
// print out the scores and the statistics
public void createResults()
// *** YOUR CODE GOES HERE ***
printWelcomeMessage();
readyKeyboard();
obtainMinAndMaxAllowedScores();
obtainOneStudentsWork();
printResults();
// -------------------- User input methods --------------------
// readyKeyboard() sets up an input stream object 'console' connected to the keyboard
// so that what's typed can be read into the program and processed.
// Do not modify this code!
private void readyKeyboard()
console = new BufferedReader(new InputStreamReader(System.in));
// obtainMinAndMaxAllowedScores() asks the user to enter the minimum
// and maximum allowable scores for this execution of the program.
// Both the minimum and maximum allowable scores must be between
// ABSOLUTE_MIN_SCORE and ABSOLUTE_MAX_SCORE (inclusive). This
// method should continue to ask the user for a minimum until a
// valid one is entered (or EXIT_PROGRAM is entered), then continue
// to ask the user for a maximum until a valid one is entered. If
// the minimum entered is greater than the maximum entered, the
// whole thing should be done again.
public void obtainMinAndMaxAllowedScores()
// *** YOUR CODE GOES HERE ***
int response = INVALID_INT;
if (response >= minAllowedScore && response <= maxAllowedScore)
System.out.print("Please enter the minimum allowable score:");
response = getIntOrExit();
while (response > maxAllowedScore || response < minAllowedScore)
System.out.print("Please enter the minimum allowable score:");
response = getIntOrExit();
if (response <= ABSOLUTE_MAX_SCORE && response >= ABSOLUTE_MIN_SCORE)
System.out.print("Please enter the maximum allowable score:");
response = getIntOrExit();
while (response > ABSOLUTE_MAX_SCORE || response < ABSOLUTE_MIN_SCORE)
System.out.print("Please enter the maximum allowable score:");
response = getIntOrExit();
/*int response;
String allowedMin;
boolean done = true;
do
done = true;
System.out.print("Please enter the minimum allowable score:");
response = getIntOrExit();
allowedMin = getYNOrExit();
if(allowedMin == EXIT_PROGRAM)
System.exit(0);
else if (response >= ABSOLUTE_MIN_SCORE)
done = true;
else if (response >= ABSOLUTE_MAX_SCORE)
done = false;
System.out.println("INVALID: " + INVALID_INT);
System.out.print("Please enter the minimum allowable score:");
response = getIntOrExit();
}while (!done);
/* System.out.print("Please enter the maximum allowable score:");
response = getIntOrExit();
if (response <= ABSOLUTE_MAX_SCORE)
return response;
else if (response <= ABSOLUTE_MIN_SCORE)
response = INVALID_INT;
while (response == INVALID_INT)
System.out.print("Please enter the maximum allowable score:");
response = getIntOrExit();
do
done = true;
System.out.print("Please enter the minimum allowable score:");
response = getIntOrExit();
String allowedMax;
if(allowedMin == EXIT_PROGRAM)
System.exit(0);
if (response <= ABSOLUTE_MAX_SCORE)
done = true;
else if (response <= ABSOLUTE_MIN_SCORE)
done = false;
System.out.println("INVALID: " + INVALID_INT);
System.out.print("Please enter the maximum allowable score:");
response = getIntOrExit();
}while (!done);
// The overall strategy to building up a student work object is
// to have the student-bulding method call on the exam-building
// method, which calls upon user input methods to get exam info.
// Thus, user entered info is successively grouped together
// into bigger units to build the entire student information set.
// obtainOneStudentsWork() builds the five exams
// and constructs the student work object from them
private void obtainOneStudentsWork()
// *** YOUR CODE GOES HERE ***
int index = 1;
Exam exam1 = buildOneExam(index);
index = 2;
Exam exam2 = buildOneExam(index);
index = 3;
Exam exam3 = buildOneExam(index);
index = 4;
Exam exam4 = buildOneExam(index);
index = 5;
Exam exam5 = buildOneExam(index);
thisWork = new OneStudentsWork(exam1, exam2, exam3, exam4, exam5);
// buildOneExam(thisTest) reads the exam information for one exam and returns an
// Exam object constructed from this information. Uses obtainWasExamTaken() to
// determine if the exam was taken and obtainOneScore() to get the exam score, if needed.
private Exam buildOneExam(int thisTest)
// *** YOUR CODE GOES HERE ***
int score = 0;
if(obtainWasExamTaken(thisTest))
score = obtainOneScore(thisTest);
return new Exam(score);
else
return new Exam();
System.out.println("Enter score for exam1:");
Exam exam1 = new Exam(getIntOrExit());
System.out.println("Enter score for exam2:");
Exam exam2 = new Exam(getIntOrExit());
System.out.println("Enter score for exam3:");
Exam exam3 = new Exam(getIntOrExit());
System.out.println("Enter score for exam4:");
Exam exam4 = new Exam(getIntOrExit());
System.out.println("Enter score for exam5:");
Exam exam5 = new Exam(getIntOrExit());
// obtainWasExamTaken(thisTest) keeps asking the user whether 'thisTest' was taken
// (e.g., "Was exam 1 taken? Enter Y, N or Q", if thisTest equals 1)
// until s/he provides a valid response. If Q is entered, we leave the
// program immediately; if Y or N (yes or no), return true if yes, false if no
private boolean obtainWasExamTaken(int thisTest)
// *** YOUR CODE GOES HERE ***
String response = INVALID_RESPONSE;
System.out.println("Was Exam" + thisTest + "taken?");
while (response.equals(INVALID_RESPONSE))
System.out.println("Please Enter" + " " + YES + " " + NO + " " + "or" + " " + EXIT_PROGRAM);
response = getYNOrExit();
if (response.equals(YES))
return true;
else
return false;
// obtainOneScore(thisTest) keeps asking the user to enter a score for
// 'thisTest' (e.g., "Enter the score for exam 1", is thisTest equals 1)
// until s/he provides one within range or s/he tells us to exit the program.
private int obtainOneScore(int thisTest)
// *** YOUR CODE GOES HERE ***
int response = INVALID_INT;
if (response >= minAllowedScore && response <= maxAllowedScore);
System.out.println("Enter the Score for Exam" + thisTest + ":");
response = getIntOrExit();
while (response > ABSOLUTE_MAX_SCORE || response < ABSOLUTE_MIN_SCORE)
System.out.println("INVALID: " + INVALID_INT);
System.out.println("Please Enter again:");
response = getIntOrExit();
return response;
// scoreIsWithinRange() returns true if the given score is inside of
// the allowable range and false if it is out of range
private boolean scoreIsWithinRange(int score)
// *** YOUR CODE GOES HERE ***
if (score >= minAllowedScore && score <= maxAllowedScore)
return true;
else
return false;
// getYNQ() reads a String from the console and returns it
// if it is "Y" or "N" or exits the program if "Q" is entered;
// the method returns INVALID_RESPONSE if the response is other
// than"Y", "N" or "Q".
// Do not modify this code!
private String getYNOrExit()
String usersInput = INVALID_RESPONSE;
try
usersInput = console.readLine();
catch (IOException e)
// never happens with the keyboard...
usersInput = usersInput.toUpperCase();
if (usersInput.equals(EXIT_PROGRAM))
System.out.println("Leaving...");
System.exit(0);
if (usersInput.equals(YES) || usersInput.equals(NO))
return usersInput;
else
return INVALID_RESPONSE;
// getIntOrExit() reads an integer from the console and returns it.
// If the user types in "Q", the program exits. If an integer is entered,
// it is returned. If something that is not an integer (e.g. "Alex"), the
// program returns INVALID_INT
// Do not modify this code!
private int getIntOrExit()
String usersInput = "";
int theInteger = 0;
try
usersInput = console.readLine();
catch (IOException e)
// never happens with the keyboard...
// if the user wants to quit, bail out now!
if(usersInput.toUpperCase().equals(EXIT_PROGRAM))
System.out.println("Program halting at your request.");
System.exit(0);
// see if we have an integer
try
theInteger = Integer.parseInt(usersInput);
catch (NumberFormatException e)
// user's input was not an integer
return INVALID_INT;
return theInteger;
// -------------------- User output methods --------------------
// printWelcomeMessage() prints a welcome message to the user explaining
// what the program does and what it expects the user to do. In
// particular, it needs to tell the user the absolute lowest and
// highest acceptable exam scores
private void printWelcomeMessage()
// *** YOUR CODE GOES HERE ***
System.out.println("Welcome!");
System.out.println("This program computes the average, the variance, and the standard deviation of 5 exams");
System.out.println("The lowest acceptable score is 0 and the highest is 1000");
// printResults() prints all of the scores present, then prints the
// statistics about them. The statistics that can have factional parts
// -- average, variance and standard deviation -- should be printed with
// exactly three digits after the decimal point. If a statistic could not be
// computed, a message to that effect should print (NOT the "phony" value stored
// in the statistic to tell the program that the statistic could not be computed).
public void printResults()
// These statements create a NumberFormat object, which is part
// of the Java library. NumberFormat objects know how to take
// doubles and turn them into Strings, formatted in a particular
// way. First, you tell the NumberFormat object (nf) how you'd like
// the doubles to be formatted (in this case, with exactly 3
// digits after the decimal point). When printing a double you call
// format to format it -- e.g. nf.format(the-number-to-format)
NumberFormat nf = NumberFormat.getInstance();
nf.setMinimumFractionDigits(3);
nf.setMaximumFractionDigits(3);
// *** YOUR CODE GOES HERE ***
System.out.println("Score for Exam1 is:" + thisWork.getExam1().getScore());
System.out.println("Score for Exam2 is:" + thisWork.getExam2().getScore());
System.out.println("Score for Exam3 is:" + thisWork.getExam3().getScore());
System.out.println("Score for Exam4 is:" + thisWork.getExam4().getScore());
System.out.println("Score for Exam5 is:" + thisWork.getExam5().getScore());
if (thisWork.getStatistics().getMinimum() == Statistics.CANT_COMPUTE_STATISTIC)
System.out.println("Can't compute the Minimum");
else
System.out.println("the Minimum is:" + thisWork.getStatistics().getMinimum());
if (thisWork.getStatistics().getMaximum() == Statistics.CANT_COMPUTE_STATISTIC)
System.out.println("Can't compute the Minimum");
else
System.out.println("the Maximum is:" + thisWork.getStatistics().getMaximum());
if (thisWork.getStatistics().getAverage() == Statistics.CANT_COMPUTE_STATISTIC)
System.out.println("Can't compute the Average");
else
System.out.println("the Average is:" + thisWork.getStatistics().getAverage());
if (thisWork.getStatistics().getVariance() == Statistics.CANT_COMPUTE_STATISTIC)
System.out.println("Can't compute the Variance");
else
System.out.println("the Variance is:" + thisWork.getStatistics().getVariance());
if (thisWork.getStatistics().getStandardDeviation() == Statistics.CANT_COMPUTE_STATISTIC)
System.out.println("Can't compute the Standard Deviation");
else
System.out.println("the Standard Deviation is:" + thisWork.getStatistics().getStandardDeviation());
// OneStudentsExams.java for Lab 2
// ICS 21 Fall 2002
// OneStudentsWork is the exams and the statistics computed from
// them that comprise one student's work
class OneStudentsWork
public static final int NUMBER_OF_EXAMS = 5;
// The student is offered five exams...
private Exam exam1;
private Exam exam2;
private Exam exam3;
private Exam exam4;
private Exam exam5;
// The statistics on those exams
Statistics studentStats;
// -------------------- Constructor --------------------
// Takes five constructed exam objects and store them for this student.
// Constructs a statistics object that holds the stats for these exams and
// store it in studentStats.
public OneStudentsWork(Exam test1, Exam test2, Exam test3, Exam test4, Exam test5)
// *** YOUR CODE GOES HERE ***
exam1 = test1;
exam2 = test2;
exam3 = test2;
exam4 = test4;
exam5 = test5;
studentStats = new Statistics(test1, test2, test3, test4, test5);
// -------------------- Accessor methods --------------------
// getExamX() methods make available ExamX
public Exam getExam1()
return exam1;
public Exam getExam2()
return exam2;
public Exam getExam3()
return exam3;
public Exam getExam4()
return exam4;
public Exam getExam5()
return exam5;
// getStatistics() makes available the Statistics object that is part of this student's work
public Statistics getStatistics()
return studentStats;
// Statistics.java for Lab 2
// ICS 21 Fall 2002
// A Statistics object stores the statistics for a group of Exams.
class Statistics
// This constant denotes a statistic that cannot be
// computed, such as an average of zero scores or a variance
// of one score.
public static final int CANT_COMPUTE_STATISTIC = -9999;
// The stats
private int minimum;
private int maximum;
private int numberOfExamsTaken;
private double average;
private double variance;
private double standardDeviation;
// -------------------- Constructor --------------------
// Calculates (initializes) the statistics, using passed-in exams.
// Note that the order of computing thst stats matters, as some
// stats use others; for instance, variance must be computed before
// standard deviation.
public Statistics(Exam exam1, Exam exam2, Exam exam3, Exam exam4, Exam exam5)
// *** YOUR CODE GOES HERE ***
calculateAverage(exam1,exam2,exam3,exam4,exam5);
calculateVariance(exam1,exam2,exam3,exam4,exam5);
calculateStandardDeviation(exam1,exam2,exam3,exam4,exam5);
// -------------------- Accessor methods --------------------
// getNumberOfExamsTaken() makes available the number of exams this student undertook
public int getNumberOfExamsTaken()
return numberOfExamsTaken;
// getMinimum() makes the minimum available
public int getMinimum()
return minimum;
// getMaximum() makes the maximum available
public int getMaximum()
return maximum;
// getAverage() makes the average available
public double getAverage()
return average;
// getVariance() make the variance available
public double getVariance()
return variance;
// getStandardDeviation() make the standard deviation available
public double getStandardDeviation()
return standardDeviation;
// -------------------- Statistics methods --------------------
// ---> Note: all statistics are to be computed using the number of exams taken
// calculateNumberOfExamsTaken() computes the number of tests the student took
// and stores the result in 'numberOfExamsTaken'
// (Note this statistic can always be computed.)
private void calculateNumberOfExamsTaken(Exam exam1, Exam exam2, Exam exam3, Exam exam4, Exam exam5)
// *** YOUR CODE GOES HERE ***
numberOfExamsTaken = OneStudentsWork.NUMBER_OF_EXAMS;
// calculateMinimum() sets 'minimum' to the minimum score of exams taken, or
// to CANT_COMPUTE_STATISTIC if a minimum can't be computed.
private void calculateMinimum(Exam exam1, Exam exam2, Exam exam3, Exam exam4, Exam exam5)
// *** YOUR CODE GOES HERE ***
/*min = exam1.getScore();
if (min > exam2.getScore())
min = exam2.getScore();
if (min > exam3.getScore())
min = exam3.getScore();
if (min > exam4.getScore())
min = exam4.getScore();
if (min > exam5.getScore())
min = exam5.getScore();
if(numberOfExamsTaken == 0)
minimum = CANT_COMPUTE_STATISTIC;
else if(numberOfExamsTaken == 1)
minimum = exam1.getScore();
else
minimum = exam1.getScore();
if(numberOfExamsTaken >= 2 && numberOfExamsTaken <= minimum)
minimum = exam2.getScore();
if(numberOfExamsTaken >= 3 && numberOfExamsTaken <= minimum)
minimum = exam3.getScore();
if(numberOfExamsTaken >= 4 && numberOfExamsTaken <= minimum)
minimum = exam4.getScore();
if(numberOfExamsTaken >= 5 && numberOfExamsTaken <= minimum)
minimum = exam5.getScore();
if (getMinimum() == ExamsManager.ABSOLUTE_MIN_SCORE)
minimum = exam1.getScore();
//exam1.getScore() = getMinimum();
else
exam1.getScore() = CANT_COMPUTE_STATISTIC;
// calculateMaximum() sets 'maximum' to the maximum score of exams taken, or
// to CANT_COMPUTE_STATISTIC if a maximum can't be computed.
private void calculateMaximum(Exam exam1, Exam exam2, Exam exam3, Exam exam4, Exam exam5)
// *** YOUR CODE GOES HERE ***
/*if (maximum == ExamsManager.ABSOLUTE_MAX_SCORE)
return true;
else
return CANT_COMPUTE_STATISTIC;*/
max = exam1.getScore();
if (max < exam2.getScore())
max = exam2.getScore();
if (max < exam3.getScore())
max = exam3.getScore();
if (max < exam4.getScore())
max = exam4.getScore();
if (max < exam5.getScore())
max = exam5.getScore();
if(numberOfExamsTaken == 0)
maximum = CANT_COMPUTE_STATISTIC;
else if(numberOfExamsTaken == 1)
maximum = exam1.getScore();
else
maximum = exam1.getScore();
if(numberOfExamsTaken >= 2 && numberOfExamsTaken >= maximum)
maximum = exam2.getScore();
if(numberOfExamsTaken >= 3 && numberOfExamsTaken >= maximum)
maximum = exam3.getScore();
if(numberOfExamsTaken >= 4 && numberOfExamsTaken >= maximum)
maximum = exam4.getScore();
if(numberOfExamsTaken >= 5 && numberOfExamsTaken >= maximum)
maximum = exam5.getScore();
// calculateAverage() computes the average of the scores for exams taken and
// stores the result in 'average'. Set to CANT_COMPUTE_STATISTIC if there
// are no tests taken.
private void calculateAverage(Exam exam1, Exam exam2, Exam exam3, Exam exam4, Exam exam5)
// *** YOUR CODE GOES HERE ***
if (numberOfExamsTaken == 5)
average = (exam1.getScore()+exam2.getScore()+exam3.getScore()+exam4.getScore()+exam5.getScore()/OneStudentsWork.NUMBER_OF_EXAMS);
else if (numberOfExamsTaken == 4)
average = (exam1.getScore()+exam2.getScore()+exam3.getScore()+exam4.getScore()/OneStudentsWork.NUMBER_OF_EXAMS);
else if (numberOfExamsTaken == 3)
average = (exam1.getScore()+exam2.getScore()+exam3.getScore()/OneStudentsWork.NUMBER_OF_EXAMS);
else if (numberOfExamsTaken == 2)
average = (exam1.getScore()+exam2.getScore()/OneStudentsWork.NUMBER_OF_EXAMS);
else if (numberOfExamsTaken == 1)
average = (exam1.getScore()/OneStudentsWork.NUMBER_OF_EXAMS);
else if (numberOfExamsTaken == 0)
average = CANT_COMPUTE_STATISTIC;
// calculateVariance() calculates the returns the variance of the
// scores for exams taken and stores it in 'variance'
// For a small set of data (such as this one), the formula for calculating variance is
// the sum of ((exam score - average) squared) for scores of exams taken
// divided by (the number of scores - 1)
// Set to CANT_COMPUTE_STATISTIC if there are fewer than two tests taken.
private void calculateVariance(Exam exam1, Exam exam2, Exam exam3, Exam exam4, Exam exam5)
// *** YOUR CODE GOES HERE ***
if (numberOfExamsTaken == 5)
variance = ((exam1.getScore()-average)*(exam1.getScore()-average)+(exam2.getScore()-average)*(exam2.getScore()-average)+(exam3.getScore()-average)*(exam3.getScore()-average)+(exam4.getScore()-average)*(exam4.getScore()-average)+(exam5.getScore()-average)*(exam5.getScore()-average))/4;
else if (numberOfExamsTaken == 4)
variance = ((exam1.getScore()-average)*(exam1.getScore()-average)+(exam2.getScore()-average)*(exam2.getScore()-average)+(exam3.getScore()-average)*(exam3.getScore()-average)+(exam4.getScore()-average)*(exam4.getScore()-average))/4;
else if (numberOfExamsTaken == 3)
variance = ((exam1.getScore()-average)*(exam1.getScore()-average)+(exam2.getScore()-average)*(exam2.getScore()-average)+(exam3.getScore()-average)*(exam3.getScore()-average))/4;
else if (numberOfExamsTaken == 2)
variance = ((exam1.getScore()-average)*(exam1.getScore()-average)+(exam2.getScore()-average)*(exam2.getScore()-average))/4;
else if (numberOfExamsTaken < 2)
variance = CANT_COMPUTE_STATISTIC;
// calculateStandardDeviation() calculates the standard
// deviation of the scores of taken exams and stores
// it in 'standardDeviation'
// The formula for calculating standard deviation is just
// the square root of the variance
private void calculateStandardDeviation(Exam exam1, Exam exam2, Exam exam3, Exam exam4, Exam exam5)
// *** YOUR CODE GOES HERE ***
if (variance == CANT_COMPUTE_STATISTIC)
standardDeviation = CANT_COMPUTE_STATISTIC;
else
standardDeviation = (Math.sqrt(variance));
// Exam.java for Lab 2
// ICS 21 Fall 2002
// An Exam object stores information about one exam
class Exam
private boolean examTaken; //was the exam taken? true for yes, false for no
private int score; //the exam's score; = 0 if test not taken
// -------------------- Constructors --------------------
// Construct a taken exam; it has score 's'
public Exam(int s)
score = s;
examTaken = true;
// Construct an exam not taken; it has a score of 0
public Exam()
score = 0;
examTaken = false;
// -------------------- Accessor methods --------------------
// Make the score of an exam available
public int getScore()
return score;
// Make available whether an exam was taken
public boolean wasTaken()
return examTaken;Your code is absolutely unreadable - even if someone was willing to
help, it's simply impossible. I do give you a few tips, though: If you
understand your code (i.e. if it really is YOUR code), you should be
able to realize that your minimum and maximum never get set (thus they
are both 0) and your exam 3 is set with the wrong value. SEE where
those should get set and figure out why they're not. Chances are you
are doing something to them that makes one 'if' fail or you just
erroneously assign a wrong variable! -
I have a TC 500GB is it possible to back up windows and mac in same time. Please help.
DdeGannes many thanks for this. Would it be a simple case of backing up by external drive, formatting and then putting the files back? Also in the unlikely event that I have a video file more than 4GB am I likley to encounter any problems with this?
Thanks
Tom. -
I just need a bit help on how to install 64 bit java, i searched on youtube for it but it came up with many that I don't know much about. Please recommend a video you guys trust or know about. thanks
You can use 3rd party software such as Carbon Copy Cloner or SuperDuper! to create a bootable clone on an external drive.
I use SuperDuper to create a clone. Yes, it's true the Recovery HD will need to be recreated after restoring a clone because neither of these softwares nor Time Machine backup that partition. It's really no big deal. You just reinstall Lion on top of itself after the restore and reapply any Software Updates including the 10.7.1 update. I've done this a few times with no issues.
The Lion Recovery Assistant app creates an external Recovery HD on like a USB thumb drive, but it creates this using the Recovery HD from your Lion install. If the Recovery HD is missing, the app will not create one for you.
EDITED:
Create your bootable clone on an external drive.
Create an external USB thumb drive with the Recovery HD using the Lion Recovery Assistant.
Swap out hard drives.
Boot from the USB Recovery HD thumb drive.
Use Disk Utilities to create a new partition (Macintosh HD), format it with the GUID partition table and Mac OS Extended (Journaled).
While in Disk Utilities, click your hard drive (not the new partition); then click the Restore button.
The Source of your restore is the external clone you created. The Destination is the newly created Macintosh HD partition.
Click the Restore button. The restore will take awhile depending on the size of the clone.
After the restore, boot your system and it should boot into Lion.
Reinstall Lion on top of itself to recreate the Recovery HD at the end of your Lion partition.
Reapply Software Updates including the 10.7.1 update (if you want it).
Hope this helps! -
Mac OS 10.4.8 , Java Web Start and JRE version of 1.4.2 and 1.5.0 problem
Hello,
I've been searching internet and reading the problems related to Java Web Start and JNLP.
But no solution I read can solve what I faced.
I'm running Mac OS x 10.4.8 and Macintosh updates the Java in my machine so that it has Java version 1.4.2 and Java 1.5.0
The application I'm running needs to be running in JRE 1.4.2.
So I changed the Java Preferences so that the default Java setting is JRE 1.4.2. However, the JNLP application still running in Java 1.5.0
So I changed the MIME and make sure the JNLP is opened with Java Web start instead. The Java Web start is for version 1.4.2. I also change its preference so that the console is opened.
I tried to run the JNLP application once again. Java web start 1.4.2_09 starts and console open, but the Java Runtime is still showing Java 1.5.0
I adjust the JNLP file so that the version is only showing 1.4.2_09 (ignoring all other variables of version 1.4.1, 1.4.2, etc found in the original JNLP file). That didn't work either.
I search on methods on how to uninstall Java 1.5.0 in Mac - apple page told me that I can't do that unless I reinstall the whole OS.
I am henceforth declare that I am stuck now !!!! Heellllpp....Are you up to date with the updates?
Update for Snow Leopard users:
Apple issued update 12 for Java for OS 10.6:
http://support.apple.com/kb/DL1573
Note: On systems that have not already installed Java for Mac OS X 10.6 update 9 or later, this update will configure web browsers to not automatically run Java applets. Java applets may be re-enabled by clicking the region labeled "Inactive plug-in" on a web page. If no applets have been run for an extended period of time, the Java web plug-in will deactivate.
If, after installing Java for OS X 2013-002 and the latest version of Java 7 from Oracle, you want to disable Java 7 and re-enable the Apple-provided Java SE 6 web plug-in and Web Start functionality, follow these steps:
http://support.apple.com/kb/HT5559?viewlocale=en_US
Further update:
Apple issued this Java related security update No. 13 on February 19:
http://support.apple.com/kb/HT5666
and Update No. 14 on March 4: http://support.apple.com/kb/DL1573
http://support.apple.com/kb/HT5677
The standard recommendation is for users to turn off Java except when they have to use it on known and trusted websites (like their bank). Javascript, which is unrelated despite the name, can be left on. -
I am new to the Mac OS and to Java Web Start. Using Java Web Start to launch a Java application on the Mac is discussed in several of the posts here. However, in the requirement section of the Overview for Java Web Start says
"Requirements
Desktop/Client requirements:
The client machine requires support for the Java Runtime Environment (JRE), version 1.3 or later. Java Web Start is available for Windows 98/NT/2000/ME/XP, the Solaris Operating Environment, and Linux."
As you can see, Mac OS is not mentioned. Yet Java Web Start exists on my Mac. Am I looking at the wrong documentation? The document is located at
http://java.sun.com/javase/6/docs/technotes/guides/javaws/developersguide/overview.html#jws
I don't know how to use Java Web Start . I don't even know where to look for help. If anyone would care to offer some help it would be greatly appreciated.You are looking in the right place alright. The reason OSX is not mentioned in the document (or, by extend, any of the official sun documents) is that sun does not (may not?) provide an official java release on OSX. Java on OSX is implemented by Apple (and much to the dismay of both users and developers, they are not doing a very good job). Still, Apple's java usually fulfills the same specifications as the official sun java, so you can take any one of sun's documents on webstart or any other technology and it will usually work on the Mac. You just can't expect sun to assure that a technology will work on a platform they have no control over...
-
I have creative suite 5.5 and have recently updated my iMac to Yosemite. Now I can't open the adobe apps. I have done the suggested Java update and mac OS X Java patch update.. still no go. Can you HELP?
uninstall, clean (Use the CC Cleaner Tool to solve installation problems | CC, CS3-CS6) the install using the installation files. do not migrate adobe programs.
Downloadable installation files available:
Suites and Programs: CC 2014 | CC | CS6 | CS5.5 | CS5 | CS4, CS4 Web Standard | CS3
Acrobat: XI, X | 9,8 | 9 standard
Premiere Elements: 13 | 12 | 11, 10 | 9, 8, 7 win | 8 mac | 7 mac
Photoshop Elements: 13 |12 | 11, 10 | 9,8,7 win | 8 mac | 7 mac
Lightroom: 5.7.1| 5 | 4 | 3
Captivate: 8 | 7 | 6 | 5.5, 5 | 1
Contribute: CS5 | CS4, CS3 | 3,2
FrameMaker: 12, 11, 10, 9, 8, 7.2
Download and installation help for Adobe links
Download and installation help for Prodesigntools links are listed on most linked pages. They are critical; especially steps 1, 2 and 3. If you click a link that does not have those steps listed, open a second window using the Lightroom 3 link to see those 'Important Instructions'. -
Javadoc after Mac OS X 10.6 Java Update 3 and Java Developer Package
I can't seem to find javadocs, src, nor any real documentation on my Mac after installing Mac OS X 10.6 Java Update 3 and the Java Developer Package. NetBeans used to just find it, and now doing a find as shown below reveals nothing. Does the Developer Package actually include docs anymore? If so, where do I find them?
find /System/Library/Frameworks/JavaVM.framework/ -name "doc*"
find /System/Library/Frameworks/JavaVM.framework/ -name "src*"
find /System/Library/Java/ -name "doc*"
None of these turn up anything.
Thanks!It took me a while but I solved it like this:
In NetBeans, open the Java Platform Manager (Tools -> Java Platforms).
Click the Add Platform... button in the lower left corner.
Select Java Standard Edition (selected by default).
In the File field, enter: /Library/Java/JavaVirtualMachines/1.6.0_22-b04-307.jdk/Contents/Home
Click Next >
The Platform Sources field should say: /Library/Java/JavaVirtualMachines/1.6.0_22-b04-307.jdk/Contents/Home/src.jar
If the Platform Javadoc field is empty, browse to or enter: /Library/Java/JavaVirtualMachines/1.6.0_22-b04-307.jdk/Contents/Home/docs.jar
Click Finish
Exit NetBeans.
Open: /Applications/NetBeans/NetBeans 6.8.app/Contents/Resources/NetBeans/etc/netbeans.conf (e.g. in TextEdit)
Beneath the line that says: #netbeans_jdkhome="/path/to/jdk"
Enter: netbeansjdkhome="/Library/Java/JavaVirtualMachines/1.6.022-b04-307.jdk/Contents/Home"
Overriding the default location in the netbeans.conf file may be enough such that you don't need to add the platform in the Netbeans Java Platform Manager.
Message was edited by: Dadaborg
Noticed a typo... -
Hello,
I have a mac machine with both Safari and Firefox on it. I hit a web page that references an applet in a jar file. I set up Java preferences to always show the console. With Firefox, the minit I hit the page, the java console appears and I start seing the applet's output there.
With Safari, the page seems to idle (it shows the HTML ocntent) but there is not Java console, and no reaction when clicking buttons that invoke actioons against the applet.
I enabled Safari's developer windows (error log etc) and I just saw a few HTML warning about malformed <br/> tags. But these occur down the file, long after the object reference to the jar.
How do I go about diagnosing this problem?
Thanks.Hello,
I have a mac machine with both Safari and Firefox on it. I hit a web page that references an applet in a jar file. I set up Java preferences to always show the console. With Firefox, the minit I hit the page, the java console appears and I start seing the applet's output there.
With Safari, the page seems to idle (it shows the HTML ocntent) but there is not Java console, and no reaction when clicking buttons that invoke actioons against the applet.
I enabled Safari's developer windows (error log etc) and I just saw a few HTML warning about malformed <br/> tags. But these occur down the file, long after the object reference to the jar.
How do I go about diagnosing this problem?
Thanks. -
Can Java program written on Windows platfrom run in Linux and Mac?
Hi
I am currently building a java applet in windows platform. I am wondering whether this program can be run on other platforms (Linux and Mac Os), Because the requirement of this program is to be able to run on three different platfrom (windows, linux and Mac os). Really appreciate if someone can help me
ThankI can say with a high degree of certaintly that the answer is probably. Thats about 90% probably, which is a lot better than you will get with anything else. You may need to be careful of fonts and such, but GFI
-
Java 6 uninstall and then install for MAC OS 10.5.8, how do I do it?
I am using RefWorks and Write-N-Cite at school and am having trouble with them. Refworks cust service said there is a corrupt java file in my computer and that I need to uninstall Java 6 from macbook OS 10.5.8 and reinstall. How do I do this? Does this sound right?
If you need the Jave 6 JRE and plug-in, MadMAC0 has posted at
https://discussions.apple.com/message/20107182?ac_cid=tw123456#20107182
Apple has also posted (Oct 22/12) the approved solution for restoring the Java 6 plug-in:
Java for OS X 2012-006: How to re-enable the Apple-provided Java SE 6 applet plug-in and Web Start functionality. -
Help! java wont download and I NEED it!
Okay so I have tried to download every version of java I can and none of them are working and I need it for my website. I have os x 10.4.8 Tiger so I don't know why it won't work. Can anyone please help me out with this? Thank You.
Well java should be installed by default as part of Mac OS X. I'm pretty sure both the Java runtime environment AND the software development kit should be included. Maybe be more specific with your question, I might be missing something.
-
Socket problem after upgrading to Xcode 4.2 and Mac OS 10.7.2
Hi,
I am writing a client app to connect to a java server using the method explained in http://developer.apple.com/library/ios/#qa/qa1652/_index.html
Everything was working fine until I upgraded to Xcode 4.2 and Mac OS 10.7.2 yesterday.
The server cannot read data written by the client. Attempting to read returns -1 which means end of stream.
Any idea why this has happened?
Thanks.Please ignore this post. It was a problem in my code.
-
Session key and MAC generation in SCP '02' i='15'
Hi,
I am trying send a PUT KEY command and it resolves to '6982' after a '9000' EXTERNAL AUTHENTICATE.
I suspect that my encryption is causing the problem.(not really sure!)
I compare my session keys to some that ppl had derived and posted on the forum and I don't really get what they did.
I am trying to find out if I'm deriving the correct session keys or not?!?!
e.g
//Calculating session keys with
//static key = '404142434445464748494a4b4c4d4e4f' (keyData)
//sequence counter = '003b'
//"0101" + sequenceCounter + "000000000000000000000000" for session CMAC key (data)
//"0102" + sequenceCounter + "000000000000000000000000" for session RMAC key (data)
//"0181" + sequenceCounter + "000000000000000000000000" for session DEK key (data)
//"0182" + sequenceCounter + "000000000000000000000000" for session ENC key (data)
//sessionCMAC is :3213860da8f8d9796794cbcec43ef7a23213860da8f8d979: with sequence counter:003b (result)
//sessionRMAC is :042a687f6e0dd3f80eabf1e5d51ccefe042a687f6e0dd3f8: with sequence counter:003b (result)
//sessionDEK is :1fe31370c22354e3b90d6b8ad5686d371fe31370c22354e3: with sequence counter:003b (result)
//sessionENC is :94a47ad54ffbf423fe4a9d915befab5294a47ad54ffbf423: with sequence counter:003b (result)
<code>
if (keyData.length == 16) {
byte[] temp = (byte[]) keyData.clone();
keyData = new byte[24];
System.arraycopy(temp, 0, keyData, 0, temp.length);
System.arraycopy(temp, 0, keyData, 16, 8);
DESedeKeySpec keySpec = new DESedeKeySpec(keyData);
SecretKeyFactory secretKeyFactory = SecretKeyFactory.getInstance("DESede");
SecretKey key = secretKeyFactory.generateSecret(keySpec);
IvParameterSpec iv = new IvParameterSpec(new byte[]{0, 0, 0, 0, 0, 0, 0, 0});
Cipher desedeCBCCipher = Cipher.getInstance("DESede/CBC/NoPadding");
desedeCBCCipher.init(Cipher.ENCRYPT_MODE, key, iv);
byte[] result = desedeCBCCipher.doFinal(data);
if (result .length == 16) {
byte[] temp = (byte[]) result .clone();
result = new byte[24];
System.arraycopy(temp, 0, result , 0, temp.length);
System.arraycopy(temp, 0, result , 16, 8);
keySpec = new DESedeKeySpec(result);
secretKeyFactory = SecretKeyFactory.getInstance("DESede");
key = secretKeyFactory.generateSecret(keySpec);
</code>
I use the same encrytion to derive KeyCheckValue with
newKey ='505152535455565758595a5b5c5d5e5f', data = '0000000000000000'
and it results to : '6d377e' (of course the last 3 bytes)
Even though my CMAC session key is different from others (e.g "RLopes" in "http://192.9.162.102/thread.jspa?threadID=5365173&tstart=363" and I have seen it in others too and its really odd to me that its slightly different if you take a close look you will get what i mean) i get the EXTERNAL AUTHENTICATION to work.
If there is anyone who is 100% sure meaning he/she got other commands to work after EXTERNAL AUTHENTICATE using CMAC please help me verify the keys I got?
Can he/she test with his code to see if he/she is getting the same session keys or check value?
Thanks in advance
KamranHi,
Here is the Class and thanks for the tip, I've honestly tried these <code></code> but didn't work and I know it is indeed annoying without the tags :D
I really hope it helps...
* To change this template, choose Tools | Templates
* and open the template in the editor.
package terminalpcsc;
import java.lang.Exception;
import java.security.GeneralSecurityException;
import java.security.Key;
import java.security.SecureRandom;
import java.util.List;
import javax.crypto.*;
import javax.crypto.spec.*;
import javax.security.sasl.AuthenticationException;
import javax.smartcardio.*;
* @author Kamran
* @param args the command line arguments
public class Main {
private static CardChannel channel;
private static Card card;
private static int CHALLENGE_LENGTH = 8;
private static byte[] keyDiversification = new byte[10];
private static byte[] keyInformation = new byte[2];
private static byte[] sequenceCounter = new byte[2];
private static byte[] cardChallenge = new byte[6];
private static byte[] cardCryptogram = new byte[8];
private static byte[] hostChallenge = new byte[8];
private static byte[] hostCryptogram = new byte[8];
private static String keyDiversificationHexString;
private static String keyInformationHexString;
private static String sequenceCounterHexString;
private static String cardChallengeHexString;
private static String cardCryptogramHexString;
private static String hostChallengeHexString;
private static String hostCryptogramHexString;
private static byte[] sessionCMAC;
private static byte[] sessionDEK;
private static byte[] sessionENC;
private static byte[] sessionRMAC;
private static byte[] icvNextCommand;
private static IvParameterSpec ivAllZeros = new IvParameterSpec(new byte[]{0, 0, 0, 0, 0, 0, 0, 0});
private static byte[] staticKey = hexStringToByteArray("404142434445464748494a4b4c4d4e4f4041424344454647");
private static byte[] newKey = hexStringToByteArray("505152535455565758595a5b5c5d5e5f");
private static byte[] CMAC;
* @param args the command line arguments
public static void main(String[] args) throws Exception {
initiateCardChannel();
String apduString = generateSelectAPDU("a000000003535041");
byte[] bufferC = hexStringToByteArray(apduString);
CommandAPDU capdu = new CommandAPDU(bufferC);
System.out.println("Sending APDU Select AID: " + byteArrayToHexString(bufferC));
ResponseAPDU rapdu = channel.transmit(capdu);
System.out.println("Sending Apdu: Done!");
System.out.println("Waiting For Response...");
byte[] bufferR = rapdu.getData();
String responseData = byteArrayToHexString(rapdu.getBytes());
System.out.println("Response: " + responseData);
apduString = generateInitializeUpdateAPDU();
bufferC = hexStringToByteArray(apduString);
capdu = new CommandAPDU(bufferC);
System.out.println("Sending APDU Initialize Update: " + byteArrayToHexString(bufferC));
rapdu = channel.transmit(capdu);
System.out.println("Sending Apdu: Done!");
System.out.println("Waiting For Response...");
bufferR = rapdu.getData();
responseData = byteArrayToHexString(rapdu.getBytes());
System.out.println("Response: " + responseData);
// protocol 01
//System.arraycopy(bufferR,0,keyDiversification,0,10);
//System.arraycopy(bufferR,10,keyInformation,0,2);
//System.arraycopy(bufferR,12,cardChallenge,0,8);
//System.arraycopy(bufferR,20,cardCryptogram,0,8);
// protocol 02
System.arraycopy(bufferR, 0, keyDiversification, 0, 10);
System.arraycopy(bufferR, 10, keyInformation, 0, 2);
System.arraycopy(bufferR, 12, sequenceCounter, 0, 2);
System.arraycopy(bufferR, 14, cardChallenge, 0, 6);
System.arraycopy(bufferR, 20, cardCryptogram, 0, 8);
keyDiversificationHexString = byteArrayToHexString(keyDiversification);
keyInformationHexString = byteArrayToHexString(keyInformation);
sequenceCounterHexString = byteArrayToHexString(sequenceCounter);
cardChallengeHexString = byteArrayToHexString(cardChallenge);
cardCryptogramHexString = byteArrayToHexString(cardCryptogram);
System.out.println("keyDiversification: " + keyDiversificationHexString);
System.out.println("keyInformation: " + keyInformationHexString);
System.out.println("sequenceCounter: " + sequenceCounterHexString);
System.out.println("cardChallenge: " + cardChallengeHexString);
System.out.println("cardCryptogram: " + cardCryptogramHexString);
System.out.println("Calculating Session Keys... encryption with CBC");
//E.4.1 GP 2.1.1
sessionCMAC = deriveEncryptionCBC(staticKey, hexStringToByteArray("0101" + sequenceCounterHexString + "000000000000000000000000"));
System.out.println("sessionCMAC is :" + byteArrayToHexString(sessionCMAC) + ": with sequence counter:" + sequenceCounterHexString);
sessionRMAC = deriveEncryptionCBC(staticKey, hexStringToByteArray("0102" + sequenceCounterHexString + "000000000000000000000000"));
System.out.println("sessionRMAC is :" + byteArrayToHexString(sessionRMAC) + ": with sequence counter:" + sequenceCounterHexString);
sessionDEK = deriveEncryptionCBC(staticKey, hexStringToByteArray("0181" + sequenceCounterHexString + "000000000000000000000000"));
System.out.println("sessionDEK is :" + byteArrayToHexString(sessionDEK) + ": with sequence counter:" + sequenceCounterHexString);
sessionENC = deriveEncryptionCBC(staticKey, hexStringToByteArray("0182" + sequenceCounterHexString + "000000000000000000000000"));
System.out.println("sessionENC is :" + byteArrayToHexString(sessionENC) + ": with sequence counter:" + sequenceCounterHexString);
System.out.println("Calculating and Verifying Card Cryptogram...");
byte[] signature = cbcMACSignature(hexStringToByteArray(hostChallengeHexString + sequenceCounterHexString + cardChallengeHexString + "8000000000000000"), sessionENC);
String signatureHexString = byteArrayToHexString(signature);
if (signatureHexString.equalsIgnoreCase(cardCryptogramHexString)) {
System.out.println("signature is :" + signatureHexString + "\ncardCryptogram is :" + cardCryptogramHexString + " \nCard cryptogram authenticated");
apduString = generateExternalAuthenticateAPDU();
bufferC = hexStringToByteArray(apduString);
capdu = new CommandAPDU(bufferC);
System.out.println("Sending APDU External Authenticate: " + byteArrayToHexString(bufferC));
rapdu = channel.transmit(capdu);
System.out.println("Sending Apdu: Done!");
System.out.println("Waiting For Response...");
bufferR = rapdu.getData();
responseData = byteArrayToHexString(rapdu.getBytes());
System.out.println("Response: " + responseData);
apduString = generatePutKeyAPDU();
bufferC = hexStringToByteArray(apduString);
capdu = new CommandAPDU(bufferC);
System.out.println("Sending APDU Put Key: " + byteArrayToHexString(bufferC));
rapdu = channel.transmit(capdu);
System.out.println("Sending Apdu: Done!");
System.out.println("Waiting For Response...");
bufferR = rapdu.getData();
responseData = byteArrayToHexString(rapdu.getBytes());
System.out.println("Response: " + responseData);
} else {
System.out.println("signature is :" + signatureHexString + "\ncardCryptogram is :" + cardCryptogramHexString + " \nCard cryptogram is not authenticated");
releaseCardChannel();
public static byte[] cbcMACSignature(byte[] data, byte[] sessionSENC) throws AuthenticationException {
IvParameterSpec params =
new IvParameterSpec(new byte[]{0, 0, 0, 0, 0, 0, 0, 0});
if (sessionSENC.length == 16) {
byte[] temp = (byte[]) sessionSENC.clone();
sessionSENC = new byte[24];
System.arraycopy(temp, 0, sessionSENC, 0, temp.length);
System.arraycopy(temp, 0, sessionSENC, 16, 8);
byte[] temp = null;
SecretKey secretKey = new SecretKeySpec(sessionSENC, "DESede");
try {
Cipher cbcDES = Cipher.getInstance("DESede/CBC/NoPadding");
cbcDES.init(Cipher.ENCRYPT_MODE, secretKey, params);
temp = cbcDES.doFinal(data);
} catch (GeneralSecurityException e) {
e.printStackTrace();
byte[] signature = new byte[8];
System.arraycopy(temp, temp.length - 8, signature, 0, signature.length);
return signature;
// generateInitialUpdateAPDU()
//CLA '80'
//INS '50' INITIALIZE UPDATE
//P1 'xx' Key Version Number
//P2 '00' Reference control parameter P2
//Lc '08' Length of host challenge
//Data 'xx xx…' Host challenge
//Le '00'
//RESPONSE TEMPLATE
//Key diversification data 10 bytes
//Key information 2 bytes
//Card challenge 8 bytes
//Card cryptogram 8 bytes
public static String generateInitializeUpdateAPDU() throws Exception {
hostChallenge = generateHostChallenge();
hostChallengeHexString = byteArrayToHexString(hostChallenge);
return "8050000008" + hostChallengeHexString + "00";
//CLA '80' or '84'
//INS 'D8' PUT KEY
//P1 'xx' Reference control parameter P1 Key Version Number -- '00' is new key range is '01' to '7F'
//P2 'xx' Reference control parameter P2 Key Identifier -- '00' to '7F'
//Lc 'xx' Length of data field
//Data 'xxxx..' Key data (and MAC if present)
//Le '00'
public static String generatePutKeyAPDU() throws Exception {
String keyCheckValue = new String();
//keyCheckValue = keyCheckValue.substring(keyCheckValue.length() - (3 * 2));
keyCheckValue = byteArrayToHexString(deriveEncryptionECB(newKey, hexStringToByteArray("0000000000000000")));
keyCheckValue = keyCheckValue.substring(keyCheckValue.length() - (3 * 2));
System.out.println("keyCheckValue :" + keyCheckValue + " 3DES ECB, key is new key '505152535455565758595a5b5c5d5e5f5051525354555657', data is 8 zeroes");
String encryptedNewKey = byteArrayToHexString(deriveEncryptionECB(sessionDEK, newKey));
//System.out.println("sessionDEK.getEncoded() :" + sessionDEK.getEncoded() + " len is:" + sessionDEK.getEncoded().length);
System.out.println("encryptedNewKey :" + encryptedNewKey);
//testing newKey
String dataField = "01" + "8010" + encryptedNewKey + "03" + keyCheckValue + "8010" + encryptedNewKey + "03" + keyCheckValue + "8010" + encryptedNewKey + "03" + keyCheckValue;
// String dataField2 = "01" + "8010" + byteArrayToHexString(newKey) + "03" + keyCheckValue + "8010" + byteArrayToHexString(newKey) + "03" + keyCheckValue + "8010" + byteArrayToHexString(newKey) + "03" + keyCheckValue;
System.out.println("datafield to calculate cmac :" + dataField);
System.out.println("icv to calculate cmac is previous mac first 8 byte sessionCMAC in CBC single des :" + byteArrayToHexString(icvNextCommand));
CMAC = generateCMac2((byte) 0x84, (byte) 0xD8, (byte) 0x00, (byte) 0x81, hexStringToByteArray(dataField), sessionCMAC, icvNextCommand);
System.out.println("data field with des padding for encryption (encryption in CBC sessionENC) :" + desPadding(dataField));
String dataField3 = byteArrayToHexString(deriveEncryptionCBC(sessionENC, hexStringToByteArray(desPadding(dataField))));
System.out.println("data field after encryption :" + dataField3);
Integer CMACLen = byteArrayToHexString(CMAC).length() / 2;
System.out.println("CMACLen :" + CMACLen);
Integer dataFieldLen = dataField3.length() / 2;
System.out.println("dataFieldLen :" + dataFieldLen);
Integer intLc = dataFieldLen + CMACLen;
System.out.println("intLc :" + intLc);
String hexLc = Integer.toString(intLc, 16);
System.out.println("hexLc :" + hexLc);
return "84D80081" + hexLc + dataField3 + byteArrayToHexString(CMAC) + "00";
//generateExternalAuthenticateAPDU()
//CLA '84'
//INS '82' EXTERNAL AUTHENTICATE
//P1 'xx' Security level --'03' C-DECRYPTION and C-MAC.--'01' C-MAC.'00' No secure messaging expected.
//P2 '00' Reference control parameter P2
//Lc '10' Length of host cryptogram and MAC
//Data 'xx xx…' Host cryptogram and MAC
//Le Not present
public static String generateExternalAuthenticateAPDU() throws Exception {
System.out.println("Calculating and Verifying Host Cryptogram...");
hostCryptogram = cbcMACSignature(hexStringToByteArray(sequenceCounterHexString + cardChallengeHexString + hostChallengeHexString + "8000000000000000"), sessionENC);
hostCryptogramHexString = byteArrayToHexString(hostCryptogram);
System.out.println("hostCryptogram is :" + hostCryptogramHexString);
CMAC = generateCMac2((byte) 0x84, (byte) 0x82, (byte) 0x03, (byte) 0x00, hostCryptogram, sessionCMAC, new byte[]{0, 0, 0, 0, 0, 0, 0, 0});
return "8482030010" + hostCryptogramHexString + byteArrayToHexString(CMAC);
// generateSelectAPDU()
//CLA '00' ISO/IEC 7816-4 command
//INS 'A4' SELECT
//P1 'xx' Reference control parameter P1 --'04' select by name
//P2 'xx' Reference control parameter P2 --'00' First or only occurrence --'02' Next occurrence
//Lc 'xx' Length of AID
//Data 'xxxx..' AID of Application to be selected
//Le '00'
// RESPONSE TEMPLATE
//'6F' File Control Information (FCI template) Mandatory
//'84' Application / file AID Mandatory
//'A5' Proprietary data Mandatory
//'73' Security Domain Management Data (see Appendix F for detailed coding) Optional
//'9F6E' Application production life cycle data Optional
//'9F65' Maximum length of data field in command message Mandatory
public static String generateSelectAPDU(String AID) throws Exception {
String AIDlen = Integer.toString(AID.length() / 2, 16);
if (AIDlen.length() == 1) {
AIDlen = "0" + AIDlen;
System.out.println("00A40400" + AIDlen + AID);
return "00A40400" + AIDlen + AID;
public static String byteArrayToHexString(byte[] b) throws Exception {
String result = "";
for (int i = 0; i < b.length; i++) {
result +=
Integer.toString((b[i] & 0xff) + 0x100, 16).substring(1);
return result;
public static void initiateCardChannel() throws CardException {
System.out.println("Connecting to Java Card...");
TerminalFactory factory = TerminalFactory.getDefault();
List<CardTerminal> terminals = factory.terminals().list();
System.out.println("Terminals Detected: " + terminals);
// get the first terminal
System.out.println("Connecting to: " + terminals + "...");
CardTerminal terminal = terminals.get(0);
System.out.println("Connected to: " + terminals);
// establish a connection with the card
System.out.println("Connecting to Java Card...");
card = terminal.connect("T=0");
System.out.println("Connected to card: " + card);
System.out.println("Obtaining Channel...");
channel = card.getBasicChannel();
System.out.println("Connecting to Channel: " + channel.getChannelNumber());
public static void releaseCardChannel() throws CardException {
System.out.println("Disconnection all...");
card.disconnect(false);
System.out.println("Disconnection Done");
System.out.println("*END*");
public static byte[] hexStringToByteArray(String s) {
int len = s.length();
byte[] data = new byte[len / 2];
for (int i = 0; i < len; i += 2) {
data[i / 2] = (byte) ((Character.digit(s.charAt(i), 16) << 4) + Character.digit(s.charAt(i + 1), 16));
return data;
//To generate the derivation data:
public static byte[] deriveEncryptionCBC(byte[] keyData, byte[] data) throws GeneralSecurityException {
//Key key = getSecretKey(keyData);
if (keyData.length == 16) {
byte[] temp = (byte[]) keyData.clone();
keyData = new byte[24];
System.arraycopy(temp, 0, keyData, 0, temp.length);
System.arraycopy(temp, 0, keyData, 16, 8);
SecretKey secretKey = new SecretKeySpec(keyData, "DESede");
IvParameterSpec dps =
new IvParameterSpec(new byte[]{0, 0, 0, 0, 0, 0, 0, 0});
String algorithm = "DESede/CBC/NoPadding";
Cipher desedeCBCCipher = Cipher.getInstance(algorithm);
desedeCBCCipher.init(Cipher.ENCRYPT_MODE, secretKey, dps);
byte[] result = desedeCBCCipher.doFinal(data);
//adjustParity(result);
return result;
public static byte[] deriveEncryptionECB(byte[] keyData, byte[] data) throws GeneralSecurityException {
//Key key = getSecretKey(keyData);
if (keyData.length == 16) {
byte[] temp = (byte[]) keyData.clone();
keyData = new byte[24];
System.arraycopy(temp, 0, keyData, 0, temp.length);
System.arraycopy(temp, 0, keyData, 16, 8);
SecretKey secretKey = new SecretKeySpec(keyData, "DESede");
String algorithm = "DESede/ECB/NoPadding";
Cipher desedeCBCCipher = Cipher.getInstance(algorithm);
desedeCBCCipher.init(Cipher.ENCRYPT_MODE, secretKey);
byte[] result = desedeCBCCipher.doFinal(data);
//adjustParity(result);
return result;
* Adjust a DES key to odd parity
* @param key
* to be adjusted
public static byte[] adjustParity(byte[] key) {
for (int i = 0; i < key.length; i++) {
int akku = (key[i] & 0xFF) | 1;
for (int c = 7; c > 0; c--) {
akku = (akku & 1) ^ (akku >> 1);
key[i] = (byte) ((key[i] & 0xFE) | akku);
return key;
public static byte[] generateCMac2(byte cla, byte ins, byte p1, byte p2, byte[] dataField, byte[] SMacSessionKey, byte[] icv) throws GeneralSecurityException, Exception {
if (SMacSessionKey.length == 16) {
byte[] temp = (byte[]) SMacSessionKey.clone();
SMacSessionKey = new byte[24];
System.arraycopy(temp, 0, SMacSessionKey, 0, temp.length);
System.arraycopy(temp, 0, SMacSessionKey, 16, 8);
byte[] cMac = new byte[8];
byte[] padding = {(byte) 0x80, 0, 0, 0, 0, 0, 0, 0};
int paddingRequired = 8 - (5 + dataField.length) % 8;
byte[] data = new byte[5 + dataField.length + paddingRequired];
//Build APDU
data[0] = cla;
data[1] = ins;
data[2] = p1;
data[3] = p2;
data[4] = (byte) ((byte) dataField.length + (byte) 0x08);
System.arraycopy(dataField, 0, data, 5, dataField.length);
System.arraycopy(padding, 0, data, 5 + dataField.length, paddingRequired);
System.out.println("data to calculate mac :" + byteArrayToHexString(data));
System.out.println("icv to calculate mac :" + byteArrayToHexString(icv));
Cipher cipher = Cipher.getInstance("DESede/CBC/NoPadding");
Cipher singleDesCipher = Cipher.getInstance("DES/CBC/NoPadding", "SunJCE");
SecretKeySpec desSingleKey = new SecretKeySpec(SMacSessionKey, 0, 8, "DES");
SecretKey secretKey = new SecretKeySpec(SMacSessionKey, "DESede");
//Calculate the first n - 1 block. For this case, n = 1
IvParameterSpec ivSpec = new IvParameterSpec(icv);
singleDesCipher.init(Cipher.ENCRYPT_MODE, desSingleKey, ivSpec);
byte ivForLastBlock[] = singleDesCipher.doFinal(data, 0, 8);
int blocks = data.length / 8;
for (int i = 0; i < blocks - 1; i++) {
singleDesCipher.init(Cipher.ENCRYPT_MODE, desSingleKey, ivSpec);
byte[] block = singleDesCipher.doFinal(data, i * 8, 8);
ivSpec = new IvParameterSpec(block);
int offset = (blocks - 1) * 8;
cipher.init(Cipher.ENCRYPT_MODE, secretKey, ivSpec);
cMac = cipher.doFinal(data, offset, 8);
ivSpec = new IvParameterSpec(new byte[8]);
singleDesCipher.init(Cipher.ENCRYPT_MODE, desSingleKey, ivSpec);
icvNextCommand = singleDesCipher.doFinal(cMac);
return cMac;
public static byte[] generateHostChallenge() {
byte[] hostChallenge = new byte[CHALLENGE_LENGTH];
SecureRandom random = new SecureRandom();
random.nextBytes(hostChallenge);
return hostChallenge;
public static String desPadding(String hexString) {
System.out.println("String to pad before:" + hexString);
hexString = hexString + "80";
int hexStringLen = hexString.length() / 2;
int padding = 8 - (hexStringLen % 8);
for (int i = 0; i < padding; i++) {
hexString = hexString + "00";
System.out.println("String to pad after :" + hexString);
return hexString;
}Thanks in advance
Kamran
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