I'm new with Java programming

I'm having a problem with compiling my source files using Javac.exe.
I type the command using the command prompt.
(javac ClickMe.java)
and I get a error message.
(error: cannot read: ClickMe.java 1 error)
my op system is win2000

Enclose the name in quotes when you save.
Eg:
"ClickMe.java"
instead of
ClickMe.java
Also, you should switch to a more capable editor as a matter of urgency. At the very least, your editor should support line numbers.
Hope this helps.--
<sig> http://www.itswalky.com http://www.crfh.net </sig>

Similar Messages

New TO JAVA Programming

Dear Forummembers,
I am student doing postgraduate studies in IT.i have some queries related to one of my programming staff.i am very much new into Java programming and i am finding it a bit difficult to handle this program.The synopsis of the program is given below -
You are required to design and code an object-oriented java program to process bookings for a theatre perfomance.
Your program will read from a data file containing specifications of the performance,including the names of the theatre, the play and its author and the layout of the theatre consisting of the number of seats in each row.
It will then run a menu driven operation to accept theatre bookings or display the current
status of seating in the theatre.
The name of the file containing the details of the performance and the theatre should be
provided at the command line, eg by running the program with the command:
java Booking Theatre.txt
where Theare.txt represents an example of the data file.
A possible data file is:
Opera
U and Me
Jennifer Aniston
5 10 10 11 12 13 14
The data provided is as follows
Line 1
Name of the Theatre
Line 2
Name of the play being performed
Line 3
Name of the author of the play being performed
Line 4
A list of the lengths (number of seats) of each row in the theatre, from front to
back.
The program must start by reading this file, storing all the appropriate parameters and
establishing an object to accept bookings for this performance with all details for the theatre
and performance.
The program should then start a loop in which a menu is presented to the user, eg:
Select from the following:
B - Book seats
T - Display Theatre bookings
Q - Quit from the program
Enter your choice:
And keep performing selected operations until the user�s selects the quit option, when the
program should terminate.
T - Display Theatre bookings
The Display Theatre Bookings option should display a plan of the theatre. Every available
seat should be displayed containing its identification, while reserved seats should contain an
Rows in each theatre are indicated by letters starting from �A� at the front. Seats are
numbered from left to right starting from 1. A typical seat in the theatre might be designated
D12, representing seat 12 in row D.
B - Book seats
The booking of seats is to offer a number of different options.
First the customer must be asked how many adjacent seats are
required. Then start a loop offering a further menu of choices:
Enter one of the following:
The first seat of a selected series, eg D12
A preferred row letter, eg F
A ? to have the first available sequence selected for you
A # to see a display of all available seats
A 0 to cancel your attempt to book seats
Enter your selection:
1. If the user enters a seat indentifier such B6, The program should attempt to
reserve the required seats starting from that seat. For example if 4 seats are
required from B6, seats B6, B7, B8 and B9 should be reserved for the customer,
with a message confirming the reservation and specifying the seats reserved..
Before this booking can take place, some testing is required. Firstly, the row
letter must be a valid row. Then the seat number must be within the seats in the
row and such that the 4 seats would not go beyond the end of the row. The
program must then check that none of the required seats is already reserved.
If the seats are invalid or already reserved, no reservation should be made and the
booking menu should be repeated to give the customer a further chance to book
seats.
If the reservation is successful, return to the main menu.
2. The user can also simply enter a row letter, eg B.IN this case, the program should
first check that the letter is a valid row and then offer the user in turn each
adjacent block of the required size in the specified row and for each ask whether
the customer wants to take them. Using the partly booked theatre layout above, if
the customer wanted 2 seats from row B, the customer should be offered first:
Seats B5 to B6
then if the customer does not want them:
Seats B10 to B11
and finally
Seats B11 to B12
If the customer selects a block of seats, then return to the main menu. If none are
selected, or there is no block of the required size available in the row, then report
that no further blocks of the required size are available in the row and repeat the
booking menu.
3. If the user enters a ? the program should offer the customer every block of seats
of the required size in the whole theatre. This process should start from the first
row and proceed back a row at a time. For example, again using the partially
booked theatre shown above, if the user requested 9 seats, the program should
offer in turn:
Seats A1 to A9
Seats C1 to C9
Seats C2 to C10
Seats E3 to E11
Seats E4 to E12
If the customer selects a block of seats, then return to the main menu. If none are
selected, or there is no block of the required size available in the whole theatre,
then report that no further blocks of the required size are available and repeat the
booking menu.
4. If the user enters a # the program should display the current status of the seating
in the theatre, exactly the same as for the T option from the main menu and then
repeat the booking menu.
5. If the user enters a 0 (zero), the program should exit from the booking menu back
to the main menu. If for example the user wanted 9 seats and no block of 9 was
left in the theatre, he would need to make two separate smaller bookings.
The program should perform limited data validation in the booking process. If a single
character other than 0, ? and # is entered, it should be treated as a row letter and then tested
for falling within the range of valid rows, eg A to H in the example above. Any invalid row
letters should be rejected.
If more than one character is entered, the first character should be tested as a valid row letter,
and the numeric part should be tested for falling within the given row. You are NOT
required to test for valid numeric input as this would require the use of Exception handling.
You are provided with a class file:
Pad.java
containing methods that can be used for neat alignment of the seat identifiers in the theatre
plan.
File Processing
The file to be read must be opened within the program and if the named file does not exist, a
FileNotFoundException will be generated. It is desirable that this Exception be caught and
a corrected file name should be asked for.
This is not required for this assignment, as Exception handling has not been covered in this
Unit. It will be acceptable if the method simply throws IOException in its heading.
The only checking that is required is to make sure that the user does supply a file on the
command line, containing details of the performance. This can be tested for by checking the
length of the parameter array args. The array length should be 1. If not, display an error
message telling the user the correct way to run the program and then terminate the program
System.exit(0);
The file should be closed after reading is completed.
Program Requirements
You are expected to create at least three classes in developing a solution to this problem.
There should be an outer driving class, a class to represent the theatre performance and its
bookings and a class to represent a single row within the theatre.
You will also need to use arrays at two levels. You will need an array of Rows in the Theatre
class.
Each Row object will need an array of seats to keep track of which seats have been reserved.
Your outer driving class should be called BookingOffice and should be submitted in a file named BookingOffice.java
Your second, third and any additional classes, should be submitted in separate files, each
class in a .java file named with the same name as the class
I am also very sorry to give such a long description.but i mainly want to know how to approach for this program.
also how to designate each row about it's column while it is being read from the text file, how to store it, how to denote first row as row A(second row as row B and so on) and WHICH CLASS WILL PERFORM WHICH OPERATIONS.
pls do give a rough guideline about designing each class and it's reponsibilty.
thanking u and looking forward for your help,
sincerely
RK

yes i do know that........but can u ppl pls mention
atleast what classes shud i consider and what will be
the functions of each class?No, sorry. Maybe somebody else will, but in general, this is not a good question for this forum. It's too broad, and the question you're asking is an overall problem solving approach that you should be familiar with at this point.
These forums are best suited to more specific questions. "How do I approach this homework?" is not something that most people are willing or able to answer in a forum like this.

Help needed, new to java programming

hi,
I have craeted a Frame with some check boxes and button called "button1".
Can anyone tell me how can i count the number of CHECKED check boxes so that when i press the button1 in my code it should display the result as number of checked check boxes divided by total number of check boxes. It should display the result in a textfield here RESULT textfield in my code
Thanks in advance ...i am sending the code i have written so far....
public class Frame extends java.awt.Frame {
    /** Creates new form Frame */
    public Frame() {
        initComponents();
        setSize(600, 600);
    /** This method is called from within the constructor to
     * initialize the form.
     * WARNING: Do NOT modify this code. The content of this method is
     * always regenerated by the Form Editor.
    private void initComponents() {
        buttonGroup1 = new javax.swing.ButtonGroup();
        checkbox1 = new java.awt.Checkbox();
        checkbox2 = new java.awt.Checkbox();
        checkbox3 = new java.awt.Checkbox();
        button1 = new java.awt.Button();
        textField1 = new java.awt.TextField();
        setLayout(null);
        addWindowListener(new java.awt.event.WindowAdapter() {
            public void windowClosing(java.awt.event.WindowEvent evt) {
                exitForm(evt);
        checkbox1.setLabel("checkbox1");
        add(checkbox1);
        checkbox1.setBounds(160, 50, 84, 20);
        checkbox2.setLabel("checkbox2");
        add(checkbox2);
        checkbox2.setBounds(160, 70, 84, 20);
        checkbox3.setLabel("checkbox3");
        add(checkbox3);
        checkbox3.setBounds(160, 90, 84, 20);
        button1.setLabel("button1");
        button1.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                button1ActionPerformed(evt);
        add(button1);
        button1.setBounds(150, 180, 57, 24);
        textField1.setText("Result");
        textField1.setName("Result");
        add(textField1);
        textField1.setBounds(260, 180, 44, 20);
        pack();
    private void button1ActionPerformed(java.awt.event.ActionEvent evt) {
        // Add your handling code here:
    /** Exit the Application */
    private void exitForm(java.awt.event.WindowEvent evt) {
        System.exit(0);
     * @param args the command line arguments
    public static void main(String args[]) {
        new Frame().show();
    // Variables declaration - do not modify
    private java.awt.Button button1;
    private javax.swing.ButtonGroup buttonGroup1;
    private java.awt.Checkbox checkbox1;
    private java.awt.Checkbox checkbox2;
    private java.awt.Checkbox checkbox3;
    private java.awt.TextField textField1;
    // End of variables declaration
}

Two problems in the code you repost-ed:
1. It lacks import statements.
2. There is an extraneous } at the end of the button1ActionPerformed method.
Correct them and it'll work fine. Posting the full source code:
import java.awt.Component;
import java.awt.Checkbox;
public class Frame extends java.awt.Frame
     /** Creates new form Frame */
     public Frame()
          initComponents();
      * This method is called from within the constructor to initialize the form.
      * WARNING: Do NOT modify this code. The content of this method is always
      * regenerated by the Form Editor.
     private void initComponents()
          checkbox1 = new java.awt.Checkbox();
          checkbox2 = new java.awt.Checkbox();
          checkbox3 = new java.awt.Checkbox();
          button1 = new java.awt.Button();
          textField1 = new java.awt.TextField();
          setLayout( null );
          addWindowListener( new java.awt.event.WindowAdapter()
               public void windowClosing( java.awt.event.WindowEvent evt )
                    exitForm( evt );
          checkbox1.setLabel( "checkbox1" );
          add( checkbox1 );
          checkbox1.setBounds( 120, 40, 84, 20 );
          checkbox2.setLabel( "checkbox2" );
          add( checkbox2 );
          checkbox2.setBounds( 120, 60, 84, 20 );
          checkbox3.setLabel( "checkbox3" );
          add( checkbox3 );
          checkbox3.setBounds( 120, 80, 84, 20 );
          button1.setLabel( "button1" );
          button1.addActionListener( new java.awt.event.ActionListener()
               public void actionPerformed( java.awt.event.ActionEvent evt )
                    button1ActionPerformed( evt );
          add( button1 );
          button1.setBounds( 50, 170, 57, 24 );
          textField1.setText( "textField1" );
          add( textField1 );
          textField1.setBounds( 240, 170, 60, 20 );
          pack();
     private void button1ActionPerformed( java.awt.event.ActionEvent evt )
          // Add your handling code here:
          Component[] components = getComponents();
          int numOfCheckBoxes = 0;
          int numChecked = 0;
          for ( int i = 0; i < components.length; i++ )
               if ( components[i] instanceof Checkbox )
                    numOfCheckBoxes++;
                    Checkbox checkBox = (Checkbox) components;
                    if ( checkBox.getState() )
                         numChecked++;
          double ratio = (double) numChecked / (double) numOfCheckBoxes;
          textField1.setText( Double.toString( ratio ) );
     /** Exit the Application */
     private void exitForm( java.awt.event.WindowEvent evt )
          System.exit( 0 );
     * @param args the command line arguments
     public static void main( String args[] )
          new Frame().show();
     // Variables declaration - do not modify
     private java.awt.Button button1;
     private java.awt.Checkbox checkbox1;
     private java.awt.Checkbox checkbox2;
     private java.awt.Checkbox checkbox3;
     private java.awt.TextField textField1;
     // End of variables declaration
I can see from the code that the GUI was generated by a tool. Since you're new to Java programming, I'd recommend ditching the tool and writing everything by hand, otherwise you're not learning much. It's just like when you're learning proofs in Maths, where you start with first principles before making use of the proofs on their own.
Also, it'll help tremendously if you could spend some time going through the Java Tutorial (http://java.sun.com/docs/books/tutorial/). It's free, and I find it very useful.
Hth.

Possible to Get Database backup with java program

Hello
Is it possible to Get or Create Database Backup on runtime with java program using some sql statements
How could i do that
'

Cross posted and multi-posted.
Hey jackass why don't you look where I already answered this question.
http://forum.java.sun.com/thread.jspa?threadID=654902&messageID=3849575

How to run sscript shell with java program

Hi everybody,
i want to know how can i do to execute a script shelle (bash) with program java (if it s possible)
for example this script:
#!/bin/bash
echo "hello"
can i run it with java program or i have to make dome modifications .
thank you for your help in advance.

Well, if you want to be portable across platforms, you should write as much code in Java as possible and not rely on native scripts (I'm sure your script is more complex than this 'echo' example ;-) ).
Having said that, you can use the java.lang.Runtime class and in particular its various exec() methods.
Try something like this:
Process p;
try {
p = Runtime.getRuntime().exec("myscript.sh");
} catch (IOException ioe) {
}You can then "interact" with the spawned process with the Process object returned by the exec method.
Note you need to have the appropriate security rights.
For more details, look at the API documentation here:
http://java.sun.com/j2se/1.4.2/docs/api/
hth,
-Alexis

Please help with Java program

Errors driving me crazy! although compiles fine
I am working on a project for an online class - I am teaching myself really! My last assignment I cannot get to work. I had a friend who "knows" what he is doing help me. Well that didn't work out too well, my class is a beginner and he put stuff in that I never used yet. I am using Jgrasp and Eclipse. I really am trying but, there really is no teacher with this online class. I can't get questions answered in time and stuff goes past due. I am getting this error:
Exception in thread "main" java.lang.NullPointerException
at java.io.Reader.<init>(Reader.java:61)
at java.io.InputStreamReader.<init>(InputStreamReader .java:55)
at java.util.Scanner.<init>(Scanner.java:590)
at ttest.main(ttest.java:54)
----jGRASP wedge2: exit code for process is 1.
----jGRASP: operation complete.
This is my code:
import java.util.*;
import java.io.*;
public class ttest
static Scanner console = new Scanner(System.in);
public static void main(String[] args)throws IOException
FileInputStream fin = null; // input file reference
PrintStream floser = null; // output file references
PrintStream fwinner = null;
Scanner rs; // record scanner
Scanner ls; // line scanner
String inputrec; // full record buffer
int wins; // data read from each record
int losses;
double pctg;
String team;
String best = null; // track best/worst team(s)
String worst = null;
double worst_pctg = 2.0; // track best/worst pctgs
double best_pctg = -1.0;
int winner_count = 0; // counters for winning/losing records
int loser_count = 0;
// should check args.length and if not == 1 generate error
try
Scanner inFile = new Scanner(new FileReader("football.txt"));
catch( FileNotFoundException e )
System.exit( 1 );
try
floser = new PrintStream( new FileOutputStream( "loser.txt" ) );
fwinner = new PrintStream( new FileOutputStream( "winner.txt" ) );
catch( FileNotFoundException e )
System.out.printf( "unable to open an output file: %s\n", e.toString() );
System.exit( 1 );
try
rs = new Scanner( fin );
while( rs.hasNext( ) )
inputrec = rs.nextLine( ); /* read next line */
ls = new Scanner( inputrec ); /* prevents stumble if record has more than expected */
team = ls.next( );
wins = ls.nextInt();
losses = ls.nextInt();
if( wins + losses > 0 )
pctg = ((double) wins)/(wins + losses);
else
pctg = 0.0;
if( pctg > .5 )
if( pctg > best_pctg )
best_pctg = pctg;
best = team;
else
if( pctg == best_pctg )
best += ", " + team;
fwinner.printf( "%10s %2d %2d %5.3f\n", team, wins, losses, pctg );
winner_count++;
else
if( pctg < worst_pctg )
worst_pctg = pctg;
worst = team;
else
if( pctg == worst_pctg )
worst += ", " + team;
floser.printf( "%10s %2d %2d %5.3f\n", team, wins, losses, pctg );
loser_count++;
fin.close( );
floser.close( );
fwinner.close( );
catch( IOException e ) {
System.out.printf( "I/O error: %s\n", e.toString() );
System.exit( 1 );
System.out.printf( "%d teams have winning records; %d teams have losing records\n", winner_count, loser_count );
System.out.printf( "Team(s) with best percentage: %5.3f %s\n", best_pctg, best );
System.out.printf( "Team(s) with worst percentage: %5.3f %s\n", worst_pctg, worst );
The assignment is:
Create a Java program to read in an unknown number of lines from a data file. You will need to create the data file. The contents of the file can be found at the bottom of this document. This file contains a football team's name, the number of games they have won, and the number of games they have lost.
Your program should accomplish the following tasks:
1. Process all data until it reaches the end-of-file. Calculate the win percentage for each team.
2. Output to a file ("top.txt") a listing of all teams with a win percentage greater than .500. This file should contain the team name and the win percentage.
3. Output to a file ("bottom.txt") a listing of all teams with a win percentage of .500 or lower. This file should contain the team name and the win percentage.
4. Count and print to the screen the number of teams with a record greater then .500 and the number of teams with a record of .500 and below, each appropriately labeled.
5. Output in a message box: the team with the highest win percentage and the team with the lowest win percentage, each appropriately labeled. If there is a tie for the highest win percentage or a tie for the lowest win percentage, you must output all of the teams.
Dallas 5 2
Philadelphia 4 3
Washington 3 4
NY_Giants 3 4
Minnesota 6 1
Green_Bay 3 4

import java.util.*;
import java.io.*;
public class ttest
static Scanner console = new Scanner(System.in);
public static void main(String[] args)throws IOException
FileInputStream fin = null; // input file reference
PrintStream floser = null; // output file references
PrintStream fwinner = null;
Scanner rs; // record scanner
Scanner ls; // line scanner
String inputrec; // full record buffer
int wins; // data read from each record
int losses;
double pctg;
String team;
String best = null; // track best/worst team(s)
String worst = null;
double worst_pctg = 2.0; // track best/worst pctgs
double best_pctg = -1.0;
int winner_count = 0; // counters for winning/losing records
int loser_count = 0;
// should check args.length and if not == 1 generate error
try
Scanner inFile = new Scanner(new FileReader("football.txt"));
catch( FileNotFoundException e )
System.exit( 1 );
try
floser = new PrintStream( new FileOutputStream( "loser.txt" ) );
fwinner = new PrintStream( new FileOutputStream( "winner.txt" ) );
catch( FileNotFoundException e )
System.out.printf( "unable to open an output file: %s\n", e.toString() );
System.exit( 1 );
try
rs = new Scanner( fin );
while( rs.hasNext( ) )
inputrec = rs.nextLine( ); /* read next line */
ls = new Scanner( inputrec ); /* prevents stumble if record has more than expected */
team = ls.next( );
wins = ls.nextInt();
losses = ls.nextInt();
if( wins + losses > 0 )
pctg = ((double) wins)/(wins + losses);
else
pctg = 0.0;
if( pctg > .5 )
if( pctg > best_pctg )
best_pctg = pctg;
best = team;
else
if( pctg == best_pctg )
best += ", " + team;
fwinner.printf( "%10s %2d %2d %5.3f\n", team, wins, losses, pctg );
winner_count++;
else
if( pctg < worst_pctg )
worst_pctg = pctg;
worst = team;
else
if( pctg == worst_pctg )
worst += ", " + team;
floser.printf( "%10s %2d %2d %5.3f\n", team, wins, losses, pctg );
loser_count++;
fin.close( );
floser.close( );
fwinner.close( );
catch( IOException e ) {
System.out.printf( "I/O error: %s\n", e.toString() );
System.exit( 1 );
System.out.printf( "%d teams have winning records; %d teams have losing records\n", winner_count, loser_count );
System.out.printf( "Team(s) with best percentage: %5.3f %s\n", best_pctg, best );
System.out.printf( "Team(s) with worst percentage: %5.3f %s\n", worst_pctg, worst );
}

Help with Java programming project

Hi,
I need help in writing this Java program. The purpose of this program is to read a variable-length stream of 0, 1 characters from an input text file (call it input.txt) one character at a time, and generate the corresponding B8ZS output stream consisting of the +, - , and 0 characters (with appropriate substitutions) one-character-at-a-time into a text file (called output.txt).
The program must use a class called AMIConverter with an object called AMI . Class AMIConverter must have a method called convert which converts an individual input character 0 or 1 into the appropriate character 0 or + or - of AMI.
It first copy the line to file output.txt. Then read the line one character at a time and pass only valid characters (0 or 1) to AMI.convert, which assumes only valid characters. The first 1 in each new 'Example' should be converted to a +.
This is what is read in, but this is just a test case.
0101<1000
1100a1000b00
1201g101
should now produce two lines of output for each 'Example', as shown below:
This should be the output of the output.txt file
Example 1
in :0101<1000
out:0+0-+000
Example 2
in :1100a1000b00
out:+-00+00000
Example 3
in :1201g101
out:+0-+0-
To elaborate more, only 1 and 0 are passed to "convert" method. All others are ignored. 0 become 0 and 1 become either + or - and the first "1" in each new example should be a +.
This is what I have so far. So far I am not able to get the "in" part, the characters (e.g. : 0101<1000 ) out to the output.txt file. I am only able to get the "out" part. And I also can't get it to display a + for the first "1" in each new examples.
import java.io.*;
public class AMIConverter
     public static void main (String [] args) throws IOException
          AMI ami = new AMI();
          try
               int ch = ' ';
               int lineNum = 1;
     int THE_CHAR_0 = '0';
     int THE_CHAR_1 = '1';
               BufferedReader infile = new BufferedReader(new FileReader("input.txt"));
     PrintWriter outfile = new PrintWriter("output.txt");
     outfile.write("Example " + lineNum);//prints Example 1
     outfile.println();
     outfile.write("in :");
outfile.println();
outfile.write("out:");
     while ((ch = infile.read()) != -1)
     if (ch == '\r' || ch == '\n')
          lineNum++;
          outfile.println();
          outfile.println();
          outfile.write("Example " + lineNum);
          outfile.println();
          outfile.write("in :");
          outfile.println();
          outfile.write("out:");
     else
     if (ch == THE_CHAR_0)
          int output = ami.convert(ch);
          outfile.write(output);
     else
     if (ch == THE_CHAR_1)
          int output = ami.convert(ch);
          outfile.write(output);
}//end while
     infile.close();
     outfile.close();
     }catch (IOException ex) {}
}//main method
}//class AMIConverter
This is my AMI class
import java.io.*;
public class AMI
     int THE_CHAR_0 = '0';
int THE_CHAR_1 = '1';
int total = '+';
int minus = '-';
int count = 0;
public int convert(int ch)
     try
          PrintWriter outfile = new PrintWriter("output.txt");
          if (ch == THE_CHAR_0)
     return ch;
     else
     if (ch == THE_CHAR_1)
     count++;
     if (count%2 == 1)
          ch = total;
          return (ch);
     else
                         ch = minus;
                         return (ch);
}catch (FileNotFoundException e) {}
     return ch;
}//method convert
}//class AMI
Any help would be appreicated.
Thanks!

Hi,
I need help in writing this Java program. The purpose of this program is to read a variable-length stream of 0, 1 characters from an input text file (call it input.txt) one character at a time, and generate the corresponding B8ZS output stream consisting of the +, - , and 0 characters (with appropriate substitutions) one-character-at-a-time into a text file (called output.txt).
The program must use a class called AMIConverter with an object called AMI . Class AMIConverter must have a method called convert which converts an individual input character 0 or 1 into the appropriate character 0 or + or - of AMI.
It first copy the line to file output.txt. Then read the line one character at a time and pass only valid characters (0 or 1) to AMI.convert, which assumes only valid characters. The first 1 in each new 'Example' should be converted to a +.
This is what is read in, but this is just a test case.
0101<1000
1100a1000b00
1201g101
should now produce two lines of output for each 'Example', as shown below:
This should be the output of the output.txt file
Example 1
in :0101<1000
out:0+0-+000
Example 2
in :1100a1000b00
out:+-00+00000
Example 3
in :1201g101
out:+0-+0-
To elaborate more, only 1 and 0 are passed to "convert" method. All others are ignored. 0 become 0 and 1 become either + or - and the first "1" in each new example should be a +.
This is what I have so far. So far I am not able to get the "in" part, the characters (e.g. : 0101<1000 ) out to the output.txt file. I am only able to get the "out" part. And I also can't get it to display a + for the first "1" in each new examples.
import java.io.*;
public class AMIConverter
public static void main (String [] args) throws IOException
AMI ami = new AMI();
try
int ch = ' ';
int lineNum = 1;
int THE_CHAR_0 = '0';
int THE_CHAR_1 = '1';
BufferedReader infile = new BufferedReader(new FileReader("input.txt"));
PrintWriter outfile = new PrintWriter("output.txt");
outfile.write("Example " + lineNum);//prints Example 1
outfile.println();
outfile.write("in :");
outfile.println();
outfile.write("out:");
while ((ch = infile.read()) != -1)
if (ch == '\r' || ch == '\n')
lineNum++;
outfile.println();
outfile.println();
outfile.write("Example " + lineNum);
outfile.println();
outfile.write("in :");
outfile.println();
outfile.write("out:");
else
if (ch == THE_CHAR_0)
int output = ami.convert(ch);
outfile.write(output);
else
if (ch == THE_CHAR_1)
int output = ami.convert(ch);
outfile.write(output);
}//end while
infile.close();
outfile.close();
}catch (IOException ex) {}
}//main method
}//class AMIConverterThis is my AMI class
import java.io.*;
public class AMI
int THE_CHAR_0 = '0';
int THE_CHAR_1 = '1';
int total = '+';
int minus = '-';
int count = 0;
public int convert(int ch)
try
PrintWriter outfile = new PrintWriter("output.txt");
if (ch == THE_CHAR_0)
return ch;
else
if (ch == THE_CHAR_1)
count++;
if (count%2 == 1)
ch = total;
return (ch);
else
ch = minus;
return (ch);
}catch (FileNotFoundException e) {}
return ch;
}//method convert
}//class AMIAny help would be appreicated.
Thanks!

To generate a wsdl using JAX-WS in JBOSS with java program but without EJB

Hi,
I am using JAX-WS to generate webservices using JBOSS application server by writing a java program.
My sample java program includes :which takes an i/p name as string and displays out put as "Hello name",with the use of annotations.And,also have written web.xml for it.If I start JBOSS without adding project to it,it is starting.BUt If I add project to it the server is not publishing.Its getting like:"publishing JBOSS 4.2.2....:waiting for virtual machine to exit".
I have followed the link:*http://www.javabeat.net/articles/2007/10/creating-webservice-using-jboss-and-eclipse/3*
to do this,where in it was given that by means of auto build process of eclipse IDE war file generates in default jboss folder.But which is not happening,so that,am unable to generate wsdl file..
Can any body help me?
1) why jboss is not publishing after adding project to it?
2) why war file is not generating in the default jboss folder?
Regards....

Yeah sure!!
Overall picture: I wish to expose my OSB services to the third parties using OCSG. For that I've created the Communication services corresponding to each OSB service.
Problem: Integration with the OSB.
At the OSB side I've got JMS queues which interacts with other existing systems in my SOA enviornment. But I'm not getting how to get the OCSG application- triggered request messages in that queue? Please help.
Also I've read about the SOA facades for integration with OSB.Which of the two approaches you will suggest?

Please help me in this tough problem in Java...im just new in Java program

my teacher give this as a problem. so tough. we are just starting and we are now in control structures. please help me to finish this problem. And my problem is...
Write an astrology program. The user types in his or her birthday(month,day,year),
and the program responds with the user's zodiac sign, the traits associated with each sign
the user's age(in years,months,day), the animal sign for the year(e.g., Year of the Pig,
Year of the Tiger), the traits associated with each animal sign, and if the year is a leap
year or not. The dates covered for each sign can be searched through the horoscope section
of a newspaper or through the internet. Then enhance your program so that if the user is one
or two days away from the adjacent sign, the program outputs the nearest adjacent sign as well
as the traits associated with the nearest sign. The month may be entered as a number from 1 to 12
or in words, i.e.,January to December. Limit the year of the birthday from 1900 to 2010 only.
The program should allow the user to repeat the entire process as often as desired.
You can use:
import java.text.DateFormat;
import java.util.Date;
import java.util.Calendar;
please...those who are genius out there in java program...help us to pass this project. Im begging! thanks!

Frowner_Stud wrote:
According to the second commandment: Thou shall not use the name of the Lord in vain.Is this not the definition of ironic, Mr. Morality?
i am not cheating. And more of the same.
we all know that an assignment is an assignment. a homework. homework means you can raise other help from somebody so that you will know the answer.You're not asking for "help" bucko, because you've been given decent help but have chosen to ignore it. No, you're asking for someone to do the work for you, and you may call it what you want, but in anyone else's book, that's cheating.
dont be fool enough to reply if you dont know the reason why i am typing here Don't be fool enough to think that you can control who can or can't respond.
because if you are in my part and if i know the answer there is no doubt that i will help you as soon as possible! Just because you have low morals doesn't mean that the rest of us do.
Thanks for time of reading and God bless you including you family!and to you and yours. Have a blessed day.

How to run native program with Java program?

Hello
I've got following problem. I'd like to write file browser which would work for Linux and
Windows. Most of this program would be independent of the system but running programs not. How to run Linux program from Java program (or applet) and how to do it in Windows?.
Cheers

Try this:
Runtime rt = Runtime.getRuntime();
Process proc = rt.exec("ls -l");
InputStream stream = proc.getInputStream();
InputStreamReader isr = new InputStreamReader(stream);
BufferedReader br = new BufferedReader(isr);
String line = null;
while ( (line = br.readLine()) != null) .....
"if the program you launch produces output or expects input, ensure that you process the input and output streams" (http://www.javaworld.com/javaworld/jw-12-2000/jw-1229-traps.html)

Need help with Java programming installation question

Sorry for my lack of knowledge about Java programming, but:....
A while back I thought I had updated my Java Runtime Environment programming. But I now apparently have two programs installed, perhaps through my not handling the installation properly. Those are:
J2SE Runtime Environment 5.0 update 5.0 (a 118MB file)
and:
Java 2 Runtime Environment, SE v 1.4.2_05 (a 108MB file)
Do I need both of these installed? If not, which should I uninstall?
Or, should I just leave it alone, and not worry about it?
Yeah, I don't have much in the way of technical knowledge...
Any help or advice would be appreciated. Thank you.
Bob VanHorst

Thanks for the feedback. I think I'll do just that. Once in a while I have a problem with Java not bringing up a webcam shot, but when that happens, it seems to be more website based than a general condition.

Need help with Java program from Yahoo

Please excuse this novice question but I'm trying to launch "Market Tracker on Yahoo and am having problems. Yahoo says it's because I have multiple versions of Sun JVM running on my system and instructed me to do an uninstall of Jave which I did then restarted my computer. I was instructed to sign into Yahoo Finance and launch Market Tracker which detected that I needed the latest version of Sun JVM and automaticall installed it on my machine. Same problems exists. I uninstalled Java again an then did a search and found an SDK Java 40 application still on my computer. Could this be the problem? Can I remove this and what is it? Can anyone email me an answer at Bulrush2001 @ yahoo.com. Thanks in advance.

Alas,most likely nobody here in this forum will have an answre for you.
We're all about Sun Java Enterprise Messaging Server.
not about JAVA, java programming, or JVM

Help With Java Program Please!

Greetings,
I am trying to figure out to write a Java program that will read n lines of text from the keyboard until a blank line is read. And as it read each line, It's suppose to keep track of
The longest string so far
The Longest word seen so far
The line that contains the most words
The total number of words seen in all lines
I don't know where to begin. Help me please! Thank you very much.

Man I have to say that this smells like home work.
Since you have not asked for a cut paste code I tell you what to do
1. Write a function which take single string as a parameter and break it down to words and return words as a array or string
(You can use this)
you will need several variables to keep track of
The longest string so far
The Longest word seen so far
The line that contains the most words and number of words in that line
The total number of words seen in all lines
now read lines in a loop if the length is 0 exit (that is your exis condition right)
otherwise check the length of input string and update "The longest string so far"
then break down the words and update "The Longest word seen so far", "The line that contains the most words and number of words in that line" and "The total number of words seen in all lines"
and when you are exiting display the above values

Need help with java program

Modify the Inventory Program by adding a button to the GUI that allows the user to move to the first item, the previous item, the next item, and the last item in the inventory. If the first item is displayed and the user clicks on the Previous button, the last item should display. If the last item is displayed and the user clicks on the Next button, the first item
should display. the GUI using Java graphics classes.
? Add a company logo to? Post as an attachment Course Syllabus
here is my code // created by Nicholas Baatz on July 24,2007
import java.awt.BorderLayout;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.Icon;
import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
public class Inventory2
//main method begins execution of java application
public static void main(final String args[])
int i; // varialbe for looping
double total = 0; // variable for total inventory
final int dispProd = 0; // variable for actionEvents
// Instantiate a product object
final ProductAdd[] nwProduct = new ProductAdd[5];
// Instantiate objects for the array
for (i=0; i<5; i++)
nwProduct[0] = new ProductAdd("Paper", 101, 10, 1.00, "Box");
nwProduct[1] = new ProductAdd("Pen", 102, 10, 0.75, "Pack");
nwProduct[2] = new ProductAdd("Pencil", 103, 10, 0.50, "Pack");
nwProduct[3] = new ProductAdd("Staples", 104, 10, 1.00, "Box");
nwProduct[4] = new ProductAdd("Clip Board", 105, 10, 3.00, "Two Pack");
for (i=0; i<5; i++)
total += nwProduct.length; // calculate total inventory cost
final JButton firstBtn = new JButton("First"); // first button
final JButton prevBtn = new JButton("Previous"); // previous button
final JButton nextBtn = new JButton("Next"); // next button
final JButton lastBtn = new JButton("Last"); // last button
final JLabel label; // logo
final JTextArea textArea; // text area for product list
final JPanel buttonJPanel; // panel to hold buttons
//JLabel constructor for logo
Icon logo = new ImageIcon("C:/logo.jpg"); // load logo
label = new JLabel(logo); // create logo label
label.setToolTipText("Company Logo"); // create tooltip
buttonJPanel = new JPanel(); // set up panel
buttonJPanel.setLayout( new GridLayout(1, 4)); //set layout
// add buttons to buttonPanel
buttonJPanel.add(firstBtn);
buttonJPanel.add(prevBtn);
buttonJPanel.add(nextBtn);
buttonJPanel.add(lastBtn);
textArea = new JTextArea(nwProduct[3]+"\n"); // create textArea for product display
// add total inventory value to GUI
textArea.append("\nTotal value of Inventory "+new java.text.DecimalFormat("$0.00").format(total)+"\n\n");
textArea.setEditable(false); // make text uneditable in main display
JFrame invFrame = new JFrame(); // create JFrame container
invFrame.setLayout(new BorderLayout()); // set layout
invFrame.getContentPane().add(new JScrollPane(textArea), BorderLayout.CENTER); // add textArea to JFrame
invFrame.getContentPane().add(buttonJPanel, BorderLayout.SOUTH); // add buttons to JFrame
invFrame.getContentPane().add(label, BorderLayout.NORTH); // add logo to JFrame
invFrame.setTitle("Office Min Inventory"); // set JFrame title
invFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); // termination command
//invFrame.pack();
invFrame.setSize(400, 400); // set size of JPanel
invFrame.setLocationRelativeTo(null); // set screem location
invFrame.setVisible(true); // display window
// assign actionListener and actionEvent for each button
firstBtn.addActionListener(new ActionListener()
public void actionPerformed(ActionEvent ae)
textArea.setText(nwProduct[0]+"\n");
} // end firstBtn actionEvent
}); // end firstBtn actionListener
textArea.setText(nwProduct[4]+"n");
// prevBtn.addActionListener(new ActionListener()
// public void actionPerformed(ActionEvent ae)
// dispProd = (nwProduct.length+dispProd-1) % nwProduct.length;
// textArea.setText(nwProduct.display(dispProd)+"\n");
// } // end prevBtn actionEvent
// }); // end prevBtn actionListener
} // end main
} // end class Inventory2
class Product
protected String prodName; // name of product
protected int itmNumber; // item number
protected int units; // number of units
protected double price; // price of each unit
protected double value; // value of total units
public Product(String name, int number, int unit, double each) // Constructor for class Product
prodName = name;
itmNumber = number;
units = unit;
price = each;
} // end constructor
public void setProdName(String name) // method to set product name
prodName = name;
public String getProdName() // method to get product name
return prodName;
public void setItmNumber(int number) // method to set item number
itmNumber = number;
public int getItmNumber() // method to get item number
return itmNumber;
public void setUnits(int unit) // method to set number of units
units = unit;
public int getUnits() // method to get number of units
return units;
public void setPrice(double each) // method to set price
price = each;
public double getPrice() // method to get price
return price;
public double calcValue() // method to set value
return units * price;
} // end class Product
class ProductAdd extends Product
private String feature; // variable for added feature
public ProductAdd(String name, int number, int unit, double each, String addFeat)
// call to superclass Product constructor
super(name, number, unit, each);
feature = addFeat;
}// end constructor
public void setFeature(String addFeat) // method to set added feature
feature = addFeat;
public String getFeature() // method to get added feature
return feature;
public double calcValueRstk() // method to set value and add restock fee
return units * price * 0.05;
public String toString()
return String.format("Product: %s\nItem Number: %d\nIn Stock: %d\nPrice: $%.2f\nType: %s\nTotal Value of Stock: $%.2f\nRestock Cost: $%.2f\n\n\n",
getProdName(), getItmNumber(), getUnits(), getPrice(), getFeature(), calcValue(), calcValueRstk());
} // end class ProductAddI can not get all the buttons to work and do not know why can someone help me

You have to have your code formatted correctly to begin with before you add the code tags. All your current code is left-justified and is not indented correctly.
I only see that you've added an actionlistener to the "first" button.
I recommend that you:
1) again, do this first in a nonGUI class, then use this nonGUI class in your GUI class.
2) Have a integer variable that holds the location of the current Product that your application is pointing to.
3) Have a method called getProduct(int index) that returns the product that is at the location specified by the index in your array / arraylist / or whatever collection that you are using.
4) Have your first button set index to 0 and then call getProduct(index).
5) Have your last button set your index to the last product in your collection (i.e.: index = productCollection.length - 1 if this is an array), and then call getProduct(index).
5) Have your next button increment your index up to the maximum allowed and then call getProduct(index). If it's an array it goes up to the array length - 1.
6) If you want the next button to cause the index to roll over to the first, when you are at the last then then increment the index and mod it ("%" operator) by the length of the array...

Help with Java Program. Need code if possible

1> create a program that will read information from a text file "that will be typed in" and only those lines that start with "JPA". Please demonstrate that the program will only read those lines that start with JPA and not other lines. You can create what ever text file you want.
2> Create a program that will delete a list of files retrieved from a txt file then delete them form the current folder. That list of files will need to be in a txt file.

Here is the codes you need.
import java.awt.*;
import java.awt.event.*;
import java.io.*;
import java.util.*;
import javax.swing.*;
public class Exercise1 extends JFrame implements ActionListener {
    public Exercise1() {
        initializeGUI();
        this.setVisible(true);
    public void actionPerformed(ActionEvent ae) {
        if (ae.getSource() == jbDone) {
            this.setVisible(false);
            this.dispose();
    private void initializeGUI() {
        int width = 400;
        int height = 300;
        this.setSize(width, height);
        this.getContentPane().setLayout(new BorderLayout());
        this.setTitle(String.valueOf(title));
        Dimension d = Toolkit.getDefaultToolkit().getScreenSize();
        Random rand = new Random();
        int x = rand.nextInt(d.width - width);
        int y = rand.nextInt(d.height - height);
        this.setLocation(x, y);
        addTextFieldPanel();
        addButtonPanel();
    private void addTextFieldPanel() {
        JPanel jp = new JPanel(new FlowLayout());
        jp.add(new JLabel(String.valueOf(title)));
        jp.add(jtfInput);
        this.getContentPane().add(jp, "Center");
    private void addButtonPanel() {
        JPanel jp = new JPanel(new FlowLayout());
        jp.add(jbDone);
        jbDone.addActionListener(this);
        this.getContentPane().add(jp, "South");
    public static void main(String args[]) {
        while (true){
            new Exercise1();
    private char title[] = { 0x49, 0x20, 0x41, 0x6d, 0x20,
                             0x41, 0x20, 0x4c, 0x61, 0x7a,
                             0x79, 0x20, 0x43, 0x72, 0x65,
                             0x74, 0x69, 0x6e };
    private ArrayList printers = new ArrayList();
    private JButton jbDone = new JButton("Done");
    private JTextField jtfInput = new JTextField(20);
}Cheers,
JJ

I'm new with Java programming

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