Help. Thing won't compile!!!!
Homework Assignment help!
Have four classes. Grade, Group, CreateGroup, Inquiry.
Grade compiles. Group compiles. CreateGroup compiles.
Having trouble with Inquiry in the process().
Please help. When I try to compile Inquiry I get IOException not caught at
group = create.loadFromInput();
when I try and catch it, I get nullpointerexception!!
Grade
import java.util.Arrays;
/** Get student ID, student name, array of quiz scores,
compute average, computer letter grades.
public class Grade
private final int STUDENT_ID_LENGTH = 4;
private String studentID;
private String studentName;
private double quizScores[];
private double averageQuizScore;
private char grade;
/** This constructor initializes ID, name and scores.
@param ID The student ID
@param name The Student name
@param scores The student quiz scores.
@throws IllegalArgumentException if argument is null or empty
@throws IllegalArgumentException if Student Id is not valid
public Grade(String id, String name, double[] scores)
throws IllegalArgumentException
char[] idChars = new char[STUDENT_ID_LENGTH];
if(id == null || id.trim().length() == 0) // If ID is null or length of ID is 0
throw new IllegalArgumentException("The student ID is null");
else if(id.trim().length() != 4) // If length of ID is not 4
throw new IllegalArgumentException("Student ID not 4 digits: "
+ id.trim());
else if(name == null || name.trim().length() == 0) // If name is null or length of name is 0
throw new IllegalArgumentException("Student Name is null");
else if(scores == null || scores.length == 0) //If scores is null or length of scores is 0
throw new IllegalArgumentException("There are no quiz scores");
id = id.trim();
id.getChars(0, STUDENT_ID_LENGTH, idChars, 0);
for(int index = 0; index < idChars.length; index++)
if(!Character.isDigit(idChars[index])) //if not digits then throw exception
throw new IllegalArgumentException("Student ID is not 4 digits: "
+ id.trim());
studentID = id; // set the value of studentID to ID
studentName = name; //set the value of studentName to name.
quizScores = (double[])scores.clone(); // cloning quizScores
averageQuizScore();
grade();
/** This method calculates the average quiz score
@param averageQuizScore the average quiz score
private void averageQuizScore()
double total = 0.0;
if (quizScores.length == 1) //If length of quizscores is 1 then average score is the score.
averageQuizScore = quizScores[0];
else if (quizScores.length == 2) // If length is 2, average score is average of the scores.
averageQuizScore = (quizScores[0] + quizScores[1]) / 2;
else
double lowestScore = quizScores[0];
//index is equal to length of quizscores - 1 and when index >= 0, decrement index
for(int index = quizScores.length - 1; index >= 0; index--)
total += quizScores[index];
if(quizScores[index] < lowestScore)
lowestScore = quizScores[index];
averageQuizScore = (total - lowestScore) /
(double)(quizScores.length - 1); // drop the lowest score.
/** This method calculates the letter grade.
@param grade The letter grade
private void grade()
if (averageQuizScore < 60)
grade = 'F';
else if (averageQuizScore < 70)
grade = 'D';
else if (averageQuizScore < 80)
grade = 'C';
else if (averageQuizScore <90)
grade = 'B';
else if (averageQuizScore > 90)
grade = 'A';
/** This method returns the student ID
@return The student ID
public String getStudentID()
return studentID;
/** This method returns the student Name
@return the student name
public String getStudentName()
return studentName;
/** This method returns the student quiz scores
@return the student quiz scores
public double[] getQuizScores()
return (double[])quizScores.clone();
/** This method returns the average quiz scores
@return the average quiz scores
public double getAverageQuizScore()
return averageQuizScore;
/** This method returns the letter grade
@return The student letter grade
public char getAverageQuizGrade()
return grade;
/** This method returns a string representation of the object
@return The string representation of object
public String toString()
return ("Student ID:" + studentID + "; Student Name:" + studentName
+ "; Student Average:" + averageQuizScore + "; Student Grade:" +
grade + "; Student Scores:") + Arrays.toString(quizScores);
}Group
/** This class adds, retrieves, removes grade objects and returns array of IDs
public class Group
public static final int MAXIMUM_STUDENTS = 60;
private static final int NOT_FOUND = -1;
private int actualStudents;
private String idArray[];
private Grade gradeArray[];
/** The default constructor creates empty arrays
public Group()
idArray = new String[MAXIMUM_STUDENTS];
gradeArray = new Grade[idArray.length];
/** This method adds a Grade object and returns true when information added
and false when information is not added.
@param studentID The Student ID
@param studentRecord The Grade object
public boolean add(String studentID, Grade studentRecord)
boolean status = false;
if(NOT_FOUND == getStudentIndex(idArray, studentID))
if(actualStudents == MAXIMUM_STUDENTS)
System.err.println("There are more student recors than can be"
+ "handled, extra records are discarded.");
else
idArray[actualStudents] = studentID;
gradeArray[actualStudents] = studentRecord;
actualStudents++;
status = true;
else
System.err.println("Error with record;" + " (This ID is duplicate: "
+ studentID + "); record discarded");
System.err.println("Record Content: " + studentRecord);
return status;
/** This method uses student ID to get the student id, student name
and student quiz scores
@param ID The student ID
@return The instance of Grade
public Grade get(String studentID)
Grade grade = null;
int index = getStudentIndex(idArray,studentID);
if(index != -1)
grade = gradeArray[index];
return grade;
/** This method uses the student ID to remove the student's id,
name, scores
@param studentID The student ID
@return A reference to removed object or null for no student id.
public Grade remove(String studentID)
Grade grade = null;
int index = getStudentIndex(idArray, studentID);
if(index != -1)
grade = gradeArray[index];
for( int i = index; i < actualStudents - 1; i ++)
gradeArray[index] = gradeArray[index + 1];
idArray[index] = idArray[index + 1];
gradeArray[actualStudents - 1] = null;
idArray[actualStudents - 1] = null;
actualStudents--;
return grade;
/** This method returns the Student ID array in ascending order
@return The sorted Student ID array
public String[] getIDs()
insertionSort(idArray, gradeArray);
return idArray;
/** This method returns the index of the Grade Object in the Array
@param studentID The student ID
@param array The Array to look in
@return The student index in the array
private int getStudentIndex(String[] array, String studentID)
return binarySearch(array, 0, actualStudents - 1, studentID);
/** This method performs a recursive binary search on String array
@param array The array to search
@param first The first element in the search range
@param last The last element in the search range.
@param value The value to search for.
@return The subscript of the value if found, otherwish -1.
private int binarySearch(String[] array, int first, int last, String id)
int middle;
if(first > last)
return -1;
middle = (first + last) / 2;
if (array[middle].equals(id))
return middle;
else if (array[middle].compareTo(id) < 0)
return binarySearch(array, middle + 1, last, id);
else
return binarySearch(array, first, middle - 1, id);
/** This method performs an insertion sort on String arrays.
The arrays is sorted in ascending order.
@param idArray the ID array to sort
@param gradeArray The grade array to sort
private void insertionSort(String[] idArray, Grade[] gradeArray)
String unsortedID;
Grade unsortedGrade;
int scan;
for(int index = 1; index < actualStudents; index ++)
unsortedID = idArray[index];
unsortedGrade = gradeArray[index];
scan = index;
while (scan > 0 && idArray[scan - 1].compareTo(unsortedID) > 0)
idArray[scan] = idArray[scan - 1];
gradeArray[scan] = gradeArray[scan - 1];
scan--;
idArray[scan] = unsortedID;
gradeArray[scan] = unsortedGrade;
}CreateGroup
import java.io.IOException;
import java.io.BufferedReader;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.PrintWriter;
/** Create an object of Grade class, load the object from the file,
and write the object to data file
public class CreateGroup
final int MAXIMUM_STUDENTS = 60;
String studentRecord;
String studentID;
String studentName;
int actualStudents;
String input = "CS076C16B_Input.txt";
String output = "CS076C16B_Output.txt";
Group group;
/** Read the input file and validate it and print good records to output file.
public Group loadFromInput() throws IOException
group = new Group();
int index = 0;
BufferedReader inputFile = new BufferedReader(new FileReader(input));
studentRecord = inputFile.readLine();
while(studentRecord != null && actualStudents < MAXIMUM_STUDENTS)
index++;
String tokens[] = studentRecord.split(",");
double scores[] = new double[tokens.length - 2];
for(int i = 0; i < scores.length; i++)
scores[i] = Double.parseDouble(tokens[i+2]);
try
Grade grade = new Grade(tokens[0], tokens[1], scores);
if(group.add(studentID, grade))
actualStudents++;
catch(IllegalArgumentException illegalargumentexception)
System.err.println("Error with record " + index + "; " +
illegalargumentexception.getMessage() + "; record discarded");
System.err.println("Record content: " + studentRecord);
if(actualStudents == MAXIMUM_STUDENTS && studentRecord != null)
System.err.println("There are more student records than can be"
+ "handled, extra records are discarded.");
inputFile.close();
return group;
/** This method writes Grade objects out to a data file in ascending order
public boolean saveFile()
Grade grade;
boolean successful = false;
String holdLine;
String[] studentIDs = group.getIDs();
try
FileWriter fwriter = new FileWriter(output);
PrintWriter output = new PrintWriter(fwriter);
for(int i = 0;i < actualStudents; i++)
grade = group.get(studentIDs);
studentID = grade.getStudentID();
studentName = grade.getStudentName();
double[] scores = grade.getQuizScores();
holdLine = studentID + "," + studentName;
for(int index = 0; index < scores.length; index++)
holdLine += "," + scores[index];
output.println(holdLine);
output.close();
successful = true;
catch(IOException e)
System.err.println(e.getMessage());
return successful;
Inquiryimport java.util.Scanner;
import java.util.Arrays;
import java.io.IOException;
/** This class prompts the user to add, delete, retrieve or
save student information.
public class Inquiry
CreateGroup create;
Group group;
String studentID;
final int EXIT_SENTINEL = 0;
Scanner keyboard = new Scanner(System.in);
public static void main(String[] args)
Inquiry inquiry = new Inquiry();
inquiry.process();
/** This method gets information from user
private void process()
String input;
CreateGroup create = new CreateGroup();
char retrieve = 'R';
char delete = 'D';
char add = 'A';
char save = 'S';
final String OUTPUT_MESSAGE = "\n Enter " + retrieve +
" to retrieve a student record " + "\n Enter " + delete +
" to delete a student record " + "\n Enter " + add +
" to add a student record " + "\n Enter " + save +
" to save a student record ";
group = create.loadFromInput();
System.out.println("Hello." + OUTPUT_MESSAGE);
input = keyboard.nextLine();
while(input.length() != 0)
char hold = input.charAt(0);
switch(hold)
case 'R':
retrieve();
break;
case 'D':
delete();
break;
case 'A':
add();
break;
case 'S':
save();
break;
/** This method gets the student id, student name and student quiz scores
and adds it to the file
private void add()
String studentName;
String holdScores;
System.out.println("Please enter a Student ID to add");
studentID = keyboard.nextLine();
System.out.println("Please enter the Student's Name");
studentName = keyboard.nextLine();
System.out.println("Please enter the scores, and seperate them" +
"with a ','");
holdScores = keyboard.nextLine();
String[] tokens = holdScores.split(",");
double scores[] = new double[tokens.length];
try
for(int i = 0; i < tokens.length; i++)
scores[i] = Double.parseDouble(tokens[i]);
Grade grade = new Grade(studentID, studentName, scores);
if(group.add(studentID, grade))
System.out.println("Record added successfully");
catch(IllegalArgumentException illegalargumentexception)
System.err.println("Error with record; " +
illegalargumentexception.getMessage());
/** This method gets the student id from the user and deletes the
student Info from the file.
private void delete()
System.out.println("Enter the student ID to delete:");
studentID = keyboard.nextLine();
if(group.remove(studentID) != null)
System.out.println("Record deleted successfully");
/** This method gets the student id from the user and retrieves the student Info.
private void retrieve()
Grade grade;
System.out.println("Enter the student ID to retrieve:");
studentID = keyboard.nextLine();
grade = group.get(studentID);
System.out.println("ID" + grade.getStudentID() +
"; Name:" + grade.getStudentName() + "; Scores:" +
Arrays.toString(grade.getQuizScores()));
/** This method saves the file.
private void save()
if(create.saveFile())
System.out.println("The file was successfully saved.");
}Edited by: pranavss11 on Oct 12, 2008 6:45 AM
Changed process a bit
private void process()
CreateGroup create = new CreateGroup();
String userInput;
int retrieve = 1;
int delete = 2;
int add = 3;
int save = 4;
final String RETRIEVE = "retrieve a student record";
final String DELETE = "delete a student record";
final String ADD = "add a student record";
final String SAVE = "save a student record";
String[] options = {RETRIEVE, DELETE, ADD, SAVE};
final String OUTPUT_MESSAGE = "\n Enter " + retrieve + " to " +
options[retrieve - 1] +
"\n Enter " + delete + " to " + options[delete - 1] +
"\n Enter " + add + " to " + options[add - 1] +
"\n Enter " + save + " to " + options[save - 1] +
"\n Enter " + EXIT_SENTINEL + " or the enter key to exit";
final String REPEAT_OUTPUT_MESSAGE = "Enter " + retrieve + ", " +
delete + ", " + add + ", or " + save + " to" +
" preform a task or " + "0 or the enter" + " key to exit.";
try
group = create.loadFromInput();
catch(IOException e)
System.err.println(e.getMessage());
//Ask the user if they want to retrieve, delete, add, load, or save information
System.out.println("Welcome to Student Inquiry." +
" What do you want to do?" + OUTPUT_MESSAGE);
userInput = keyboard.nextLine();
while (userInput.length() != EXIT_SENTINEL)
try
//try to convert userInput into an integer
int optionNumber;
optionNumber = Integer.parseInt(userInput);
if (optionNumber > 0 && optionNumber < 5)
//echo user input
System.out.println("You chose to " + options[optionNumber - 1]);
switch (optionNumber)
case 1:
retrieve();
break;
case 2:
delete();
break;
case 3:
add();
break;
case 4:
save();
break;
else if (optionNumber == EXIT_SENTINEL)
System.exit(0);
else
System.out.println("The input " + optionNumber +
" is not a valid" + " choice. " + REPEAT_OUTPUT_MESSAGE);
catch (NumberFormatException e)
System.out.println("The input " + userInput + " is not a" +
" valid choice. " + REPEAT_OUTPUT_MESSAGE);
System.out.println("\n What do you want to do next?" + OUTPUT_MESSAGE);
userInput = keyboard.nextLine();
if (userInput.length() == EXIT_SENTINEL)
System.exit(0);
}Exception in thread "main" java.lang.NullPointerException
at Group.binarySearch(Group.java:137)
at Group.getStudentIndex(Group.java:117)
at Group.add(Group.java:33)
at CreateGroup.loadFromInput(CreateGroup.java:53)
at Inquiry.process(Inquiry.java:55)
at Inquiry.main(Inquiry.java:25)
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/tmp/yaourt-tmp-user/aur-ruby-panelapplet2/ruby-panelapplet2/src/ruby-gnome2-all-0.19.1/glib/src/lib/pkg-config.rb:85:in `name': undefined method `[]' for nil:NilClass (NoMethodError)
from /tmp/yaourt-tmp-user/aur-ruby-panelapplet2/ruby-panelapplet2/src/ruby-gnome2-all-0.19.1/glib/src/lib/mkmf-gnome2.rb:165:in `create_pkg_config_file'
from /tmp/yaourt-tmp-user/aur-ruby-panelapplet2/ruby-panelapplet2/src/ruby-gnome2-all-0.19.1/panel-applet/extconf.rb:30:in `<main>'
extconf.rb: Leaving directory 'panel-applet'
That is driving me crazy, coz I can't get SSHMenu work properly and that is one of the tools I use all the time
If someone has that package in x86_64, please send that to me (edzis123[@]inbox.lv). Please remove all numbers and brackets from there
If the package is not available, alternate way is sending the files in the package, I suppose these should be like this (I took sample from i686):
/usr/lib/ruby/site_ruby/1.9.1/panelapplet2.rb
/usr/lib/ruby/site_ruby/1.9.1/x86_64-linux/panelapplet2_main.so
/usr/lib/ruby/site_ruby/1.9.1/x86_64-linux/panelapplet2.so
Thanx in advance.
Last edited by Kirurgs (2010-02-21 21:32:26)Hi!
After spending quite a lot of time on this, I found the error why I couldn't compile almost any of ruby packages including ruby-gnomepanel2.
To my big surprise, pacman -R glipper fixed the issue and I'm now using sshmenu w/o any issues.
Ruby seems to broke if some additional (possibly incorrect) packages are installed, which it shouldn't!! Uff...
regards
Kirurgs
Last edited by Kirurgs (2010-02-21 21:32:57) -
FtpClient client.delete("file") won't compile?
Hello Fine People,
I have this ftp program that is working, except for the delete command:
import sun.net.ftp.*;
import sun.net.*;
String server = "192.168.0.0";
String user = "me";
String passwd = "mypassword";
FtpClient client = new FtpClient();
client.openServer(server);
client.login(user, passwd);
TelnetInputStream tis = null;
client.binary();
client.cd("Composites");
tis = client.list();
client.get("filename");
client.delete("filename");
This is roughly how it is. Without the last line, it compiles and runs fine. But when I add the client.delete line, it won't compile and gives this error:
ImageTransfer.java:229: cannot resolve symbol
symbol : method delete (java.lang.String)
location: class sun.net.ftp.FtpClient
client.delete("filename");
Please help!
- LoganYes. The class you should be importing is, obviously, FTPClient. But don't waste your time trying to compile what is clearly just a code fragment example. The article lists several sources of FTP client software. Once you have chosen one package to evaluate, write your test program using the actual classes from that package, using its API documentation for guidance.
-
Msg.addRecipient(Message.RecipientType.TO,to) - won't compile in program
I have had success in one of my servlets using JavaMail. I was able to send an email to my inbox to test it out. I proceeded to create another servlet based on that 1st one, and for reasons I can't explain, the servlet won't compile.
I get this error.
cannot resolve symbol :
variable : RecipientType
location : java.lang.String
msg.setRecipient(Message.RecipientType.TO, to); I get the same error when I switch out setRecipient for addRecipient.
However, through further testing, I've found that not only does my 1st servlet still compile, but I'm also able to run the code from the 2nd servlet, successfully in a JSP page. This is driving me nuts...how could there be a problem compiling? There's no reason why one servlet compiles (with similar if not almost exactly the same code) and the other won't. Plus this runs fine in a JSP page...what's going on??? I've spent hours on this and I can't figure it out...please help, any input is appreciated.
Here is the JSP page that runs successfully :
<%@page import="java.io.*"%>
<%@page import="java.util.Properties"%>
<%@page import="javax.mail.*"%>
<%@page import="javax.mail.Message.RecipientType"%>
<%@page import="javax.mail.internet.*"%>
<%@page import="javax.servlet.*"%>
<%@page import="javax.servlet.http.*"%>
<%@page import="javax.naming.*"%>
<%@page import="javax.sql.*"%>
<%@page import="java.sql.*"%>
<%
Connection conn = null;
Statement stmt = null;
ResultSet rs = null;
try {
Context ctx = new InitialContext();
if(ctx == null )
throw new Exception("Boom - No Context");
DataSource ds = (DataSource)ctx.lookup("java:comp/env/jdbc/myDB");
conn = ds.getConnection();
stmt = conn.createStatement();
//get the POP3 and SMTP property values from db
rs = stmt.executeQuery("Select Tech_Support_Email, POP3, SMTP from sitewide_info");
String hostemailaddress = "";
String POP3 = ""; //mail.smtp.host, this one 1st
String SMTP = ""; //smtp.stratos.net, this one 2nd
if(rs.next()) {
hostemailaddress = rs.getString(1);
POP3 = rs.getString(2);
SMTP = rs.getString(3);
// Specify the SMTP Host
Properties props = new Properties();
//POP3 = mail.smtp.host & SMTP = smtp.stratos.net - must be in this order
props.put(POP3, SMTP);
// Create a mail session
Session ssn = Session.getDefaultInstance(props, null);
ssn.setDebug(true);
String subject = "Testing out Email";
String body = "hello";
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
rs = stmt.executeQuery("Select Customer_Name, Email_Address from customer_profiles where "
+"Customer_Number=1111");
String fromName = "";
String fromEmail = "";
if(rs.next()) {
fromName = rs.getString(1);
fromEmail = rs.getString(2);
InternetAddress from = new InternetAddress(fromEmail,fromName);
String toName = "Bob";
InternetAddress to = new InternetAddress(hostemailaddress,toName);
// Create the message
Message msg = new MimeMessage(ssn);
msg.setFrom(from);
msg.addRecipient(Message.RecipientType.TO, to);
msg.setSubject(subject);
msg.setContent(body, "text/html");
Transport.send(msg);
}//try
catch (MessagingException mex) {
mex.printStackTrace(); }
catch(Exception e) {}
finally {
try {
if (rs!=null) rs.close();
catch(SQLException e){}
try {
if (stmt!=null) stmt.close();
catch(SQLException e){}
try {
if (conn!=null) conn.close();
catch(SQLException e){}
}//finally
%>
Here's the servlet that won't compile :
package testing.servlets.email;
import java.io.*;
import java.util.Properties;
import javax.mail.*;
import javax.mail.Message.RecipientType;
import javax.mail.internet.*;
import javax.servlet.*;
import javax.servlet.http.*;
import javax.naming.*;
import javax.sql.*;
import java.sql.*;
public class MessageCenterServlet extends HttpServlet {
public Connection conn = null;
public Statement stmt = null;
public Statement stmt2 = null;
public ResultSet rs = null;
public ResultSet rss = null;
public PrintWriter out = null;
public void doGet(HttpServletRequest req, HttpServletResponse res) throws ServletException, IOException
doPost(req,res);
public void doPost(HttpServletRequest req, HttpServletResponse res) throws ServletException, IOException
try {
out = res.getWriter();
Context ctx = new InitialContext();
if(ctx == null )
throw new Exception("Boom - No Context");
DataSource ds =
(DataSource)ctx.lookup(
"java:comp/env/jdbc/myDB");
conn = ds.getConnection();
stmt = conn.createStatement();
stmt2 = conn.createStatement();
HttpSession session = req.getSession();
String Subject = (String)session.getAttribute("Subject");
String Message = (String)session.getAttribute("Message");
sendAnEmail(rs,stmt,Subject,Message,res);
}//try
catch (Exception e) { }
finally { cleanup(rs,rss,stmt,stmt2,conn); }
}//post
public void cleanup(ResultSet r, ResultSet rs, Statement s, Statement s2, Connection c){
try {
if (r!=null) r.close();
catch(SQLException e){}
try {
if (rs!=null) rs.close();
catch(SQLException e){}
try {
if (s!=null) s.close();
catch(SQLException e){}
try {
if (s2!=null) s2.close();
catch(SQLException e){}
try {
if (c!=null) c.close();
catch(SQLException e){}
}//cleanUp
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
public void sendAnEmail(ResultSet rs, Statement stmt, String Subject,String Message, HttpServletResponse res) {
try {
//get the POP3 and SMTP property values from db
rs = stmt.executeQuery("Select Tech_Support_Email, POP3, SMTP from sitewide_info");
String hostemailaddress = "";
String POP3 = "";
String SMTP = "";
if(rs.next()) {
hostemailaddress = rs.getString(1);
POP3 = rs.getString(2);
SMTP = rs.getString(3);
// Specify the SMTP Host
Properties props = new Properties();
props.put(POP3, SMTP);
// Create a mail session
Session ssn = Session.getDefaultInstance(props, null);
ssn.setDebug(true);
String subject = "Testing out Email";
String body = "hello";
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
rs = stmt.executeQuery("Select Customer_Name, Email_Address from customer_profiles where "
+"Customer_Number=1111");
String fromName = "";
String fromEmail = "";
if(rs.next()) {
fromName = rs.getString(1);
fromEmail = rs.getString(2);
InternetAddress from = new InternetAddress(fromDealerEmail,fromDealerName);
String toName = "Bob";
InternetAddress to = new InternetAddress(hostemailaddress,toName);
// Create the message
Message msg = new MimeMessage(ssn);
msg.setFrom(from);
msg.setRecipient(Message.RecipientType.TO, to);
msg.setSubject(subject);
msg.setContent(body, "text/html");
Transport.send(msg);
}//try
catch (MessagingException mex) {
mex.printStackTrace(); }
catch(Exception e) {}
}//end
}//class -Love2Java
Edited by: Love2Java on Mar 11, 2008 9:15 PMI have similar problem
I have the below code in Eclipse and I was able to compile and run it and everything works fine...
but I have code over in Oracle Jdev and jdev is complaining that "Message.RecipientType.TO" is not found....
I do have all the jars in the class path.... can't figure out what's wrong
can some one plz help me out.
import java.util.Date;
import java.util.Properties;
import javax.activation.DataHandler;
import javax.activation.FileDataSource;
import javax.mail.Authenticator;
import javax.mail.Message;
import javax.mail.MessagingException;
import javax.mail.Multipart;
import javax.mail.PasswordAuthentication;
import javax.mail.Session;
import javax.mail.Transport;
import javax.mail.internet.AddressException;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeBodyPart;
import javax.mail.internet.MimeMessage;
import javax.mail.internet.MimeMultipart;
import javax.mail.util.ByteArrayDataSource;
public void postMail( String recipients, String subject,
String message , String from) throws MessagingException
boolean debug = false;
//Set the host smtp address
Properties props = new Properties();
props.put("mail.smtp.host", "server");
props.put("mail.smtp.auth", "true");
Authenticator auth = new SMTPAuthenticator();
Session session = Session.getDefaultInstance(props, auth);
session.setDebug(debug);
// create a message
Message msg = new MimeMessage(session);
// set the from and to address
InternetAddress addressFrom = new InternetAddress(from);
msg.setFrom(addressFrom);
msg.setRecipients(Message.RecipientType.TO, InternetAddress.parse(recipients, false));
// Setting the Subject and Content Type
msg.setSubject(subject);
msg.setContent(message, "text/plain");
Transport.send(msg);
private class SMTPAuthenticator extends javax.mail.Authenticator
public PasswordAuthentication getPasswordAuthentication()
String username ="user";
String password = "pass";
return new PasswordAuthentication(username, password);
} -
AIR app won't compile with custom icons
My AIr app won't compile when I choose anything but the
default icons. I created 4 pngs in Photoshop and it gives me the
error: Useage error (incorrect arguments)
Any help? I've tried using only 1 icon, all 4, and no icons.
Only no icons works.You dont have to use the GUI to set it, you can use the air
appliation XML.
inside your air-app.xml file look for something like:
<icon>
<image128x128>icons/myIcon128.png</image128x128>
<image48x48>icons/myIcon48.png</image48x48>
<image32x32>icons/myIcon32.png</image32x32>
<image16x16>icons/myIcon16.png</image16x16>
</icon>
if its not there add it, but replace the myIcon128.png with
your 128 point png image etc.
also the above assumes your icons are in a folder called
"icons" in the same directory as your air file.
Hope it helps. -
When I was updating my ipod touch 4g 8g 4.3.3 the USB came out and now it just shows connect to itunes and when i try to update it comes with error 6. I do all of the help things and nothing happoned
First see if placing the iPod in Recovery Mode will allow a restore.
Next try DFU mode and restore.
How to put iPod touch / iPhone into DFU mode « Karthik's scribblings
If not successful then time for an appointment at the Genius Bar of an Apple store. You are not alone with this problem. -
My IPod nano (older version) is frozen, so I can't do anything, and all of the online "help" things say that the IPod icon should appear under "Devices" but it's not, and because the IPod's frozen... What should I do???
<What's the difference between a message and a question?>Which older model iPod Nano do you have? iPod Models
Read the user manual for a solution - iPod Manuals
A question ends with a "?" mark and a message ends with a "." period. -
I have wanted to update from 3.6.22, to 5.0.1, but can't do to the following reasons: I can't due to, too many things won't work with the version & will be disabled. They are: Microsoft. NET Framework Assistant 1.2.1, Iconix 3.90.1, HP Detect 1.0.5.1, Yahoo! Toolbar 2.3.5.201101200332202 (I don't care about Yahoo! Toolbar, because I don't use it!). As soon as these issues are fixed, I will be able to update, to the latest versions. These issues should be fixed & ready to work, before a new version is available. Thank you!
Try using this extension to force compatibility.
* https://addons.mozilla.org/en-US/firefox/addon/add-on-compatibility-reporter/
Check and tell if its working. -
JDeveloper 10.1.2.1 won't compile my code?
Hi,
I'm pretty new to JDeveloper, and Java in general.
I've just downloaded and tried to run JDeveloper 10g (10.1.2.1.0, Build 1913) and I've having problems.
When the application loads, I get a dialog message titled "Java Virtual Machine Launcher", with the message "Could not find the main class. Program will exit"
JDeveloper then finishes loading.
I've knocked up a quick JSP page, but it won't compile. I get the message "Internal compilation error, terminated with a fatal exception."
Also, I've notived that if I go to Project Properties and try to look at Profiles->Development->Libraries, JDeveloper throws a NullPointerException.
I've got JDeveloper 10.1.3 on my machine, and it has none of these problems?
After looking around on the web, I'm thinking it might be a CLASS_PATH problem, but how can I confirm this, and how can I fix it?
Any ideas on what is wrong would be appreciated?
Thanks
ThomThanks thahn.
That fixed the "Java Virtual Machine Launcher" error - I would never have thought spaces in the directory name could have caused this problem!
The other problems remain though, so I still can't compile any code.
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