Getting java program to run (really basic)

Hi,
I'm used to running java programs through the programs I write with, like Eclipse, but now I'm trying to run a program on a compuyer without those things and I'm stuck.
I'm running Windows XP and have downloaded the SDK Version 1.4.2, The java.com website says I have the latest software, everything is up to date.
All the sites I see say that the way to run a program is to use the 'javac' command from the command prompt. However, doing this (with or without a file name appended) gives me the error: 'javac is not recognized as an internal or external command, operatable program or batch file.'
What do I need to do to run a simple java program from a bunch of .java files?
Help much appreciated, thanks.

All which instuructions?
1. I've followed all the instructions at 'Installation Instructions', http://www.java.com/en/download/help/5000010300.xml. They have instructions to
.A: Download and Install: All done.
.B: Enable and Configure: They say it only relates to browsers and applets
.C: Test installation: Test comes out positive.
2. The files that were downloaded: Contain no instructions
3. All the 'Enable' instructions found here: http://www.java.com/en/download/help/index_configuration.xml
These relate to:
.A:Switching between Microsoft VM and JRE
.B:Enabling JRE for browsers and Applets
.C: Clearing the cache
.D: Viewing the console,
etc etc. None of them seem to be about setting a path.
Can you tell me which instructions you mean?
Thanks

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at $Proxy1.getSchools(Unknown Source)
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Looks like a configuration problem to me. Perhaps there's some place where you set up the options which tell the program how to connect to the Internet (because it looks like that's what it's trying to do). If so, browse through there until you find some settings involving "proxy" or something like that. Find somebody else who is using the program and see what they have for those settings.
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Java program not running by the Ant

i have a small java program.
its a classpath problem.
cant figure out where is the problem.
i am running the code via Ant.
build.xml
<?xml version="1.0"?>
<project name="myproject" basedir="." default="all">
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</javac>
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   <java classname="${runclass}">
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compile:
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BUILD SUCCESSFUL
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TestClient is the name of main class file.
not sure whats wrong with this build.xml ? whats wrong in it ?
one thing , i guess, i did not mention "." , current directory in the build.xml ......is it because of that ?
i browsed apache manual......To Run a Java program.....first, they are making a JAR file ...and then they are executing the JAR.
i really, dont need the JAR file......i just want to run it.....thats enough.
somewhere, i have to do some modification in this buld.xml.......do you have any idea ?
thank you

TestClient folder has
1)src
2)classes
3)build.xml
i have posted the build.xml already.
now, src folder has TestClient.java
TestClient.java
==================
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import org.apache.axis.client.Service;
import javax.xml.namespace.QName;
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clearly, its not able to run it.
looked the manual....did not find anything special about java task....still not working.

Java program to run a C compiled file in SHELL unix

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hi,
i have two queries,
1) i have a c program which i compile to get a new
file,{a exe file i suppose}, i need to execute it for
2000 times. for that i need to write a java program
which can run the file in SHELL unix.
can you suggest me how to write,Read this: http://www.javaworld.com/javaworld/jw-12-2000/jw-1229-traps.html
However, you could do this all in a shell script.
>
2) also my file name starts with 0001.mnp to
1989.mnp, how to get 0001 as a number and during
increment it should generate as 0002 ..0038 and so
on. till 1989.
the above java program which am goin to write should
just take file 0001.mnp and convert it into
0001.bns,
and get incremented automatically till the file 1989.A loop? What are you having difficulty with?
Again, this could all be done in a shell script.

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1)If I didn't call
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in "start()" function, the java program Test ran properly after I sent signal to the process by using kill command in an command line;
or
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It seems to be a thread dead lock, but I'm not sure. Can any body help?Thanks very much.

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san.kumar wrote:
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                                   numberField.setText(numberField.getText()+8);
                              else if (source == button9)
                                   numberField.setText(numberField.getText()+9);
                              else if (source == button0)
                                   numberField.setText(numberField.getText()+0);
                              nextNum=Double.parseDouble(numberField.getText());
               ActionListener listener =new NumberListener();
               button1.addActionListener(listener);
               button2.addActionListener(listener);
               button3.addActionListener(listener);
               button4.addActionListener(listener);
               button5.addActionListener(listener);
               button6.addActionListener(listener);
               button7.addActionListener(listener);
               button8.addActionListener(listener);
               button9.addActionListener(listener);
               button0.addActionListener(listener);
               class CalculateListener implements ActionListener
                    public void actionPerformed(ActionEvent event)
                         numberField.setText("");
                         Object source=event.getSource();
                         if (source==divbutton)
                              operator="/";
                         else if (source==multbutton)
                              operator="*";
                         else if (source==plusbutton)
                              operator="+";
                         else if (source==minusbutton)
                              operator="-";
                         else if (source==equalsbutton)
                              operate(nextNum);
                              numberField.setText(""+number);
                         start=false;
               ActionListener calclistener =new CalculateListener();
               divbutton.addActionListener(calclistener);
               multbutton.addActionListener(calclistener);
               plusbutton.addActionListener(calclistener);
               minusbutton.addActionListener(calclistener);
               equalsbutton.addActionListener(calclistener);
               JPanel controlPanel = new JPanel();
               controlPanel.setLayout(new GridLayout(4, 4));
             controlPanel.add(numberField);
         controlPanel.add(button7);
         controlPanel.add(button8);
         controlPanel.add(button9);
               controlPanel.add(divbutton);
           controlPanel.add(button4);
         controlPanel.add(button5);
         controlPanel.add(button6);
               controlPanel.add(multbutton);
               controlPanel.add(button1);
         controlPanel.add(button2);
         controlPanel.add(button3);
               controlPanel.add(minusbutton);
               controlPanel.add(decbutton);
         controlPanel.add(button0);
         controlPanel.add(equalsbutton);
               controlPanel.add(plusbutton);
         JPanel clearPanel = new JPanel();
               final JButton clearbutton =new JButton("CLEAR");
         clearPanel.add(clearbutton);
               class ClearListener implements ActionListener
                    public void actionPerformed(ActionEvent event)
                         number=0;
                         nextNum=0;
                         numberField.setText("");
             ActionListener alistener =new ClearListener();
               clearbutton.addActionListener(alistener);
               getContentPane().add(numberField, BorderLayout.NORTH);
         getContentPane().add(controlPanel, BorderLayout.CENTER);
         getContentPane().add(clearPanel, BorderLayout.SOUTH);
          public void operate(double otherNum)
               if (operator.equals("/"))
                    number = number/otherNum;
               else if (operator.equals("*"))
                    number = number*otherNum;
               else if (operator.equals("+"))
                    number = number+otherNum;
               else if (operator.equals("-"))
                    number = number-otherNum;
          private boolean start;
          private double number;
          private double nextNum;
          private double result;
          private String operator;
          private JTextField numberField;
     }Here's the test program
   import javax.swing.JFrame;
   public class CalculatorTest
      public static void main(String[] args)
         JFrame frame = new CalculatorFrame4();
         frame.setTitle("Calculator");
         frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
         frame.show();
   }

I am no expert, in fact I am a very newbie. But I was trying to get my code to update too, and I didn't know I had to call the validate() function...try doing that, if you haven't already, also read up on validate() from the Component (or Container) API. I didn't really look through your code, I wouldn't be able to keep it in my head anyway.

Can't get java applet to run on IE 6.0

I have just installed j2sdk1.4.0 and I am trying to get the HelloWorld example to run. I can get it to run on appletviewer but when I run in on IE 6.0, I get the error message
Error loading class: HelloWorld
java.lang.ClassFormatError
java.lang.ClassNotFoundException: HelloWorld
I have tried other java applets from various websites and they work.
Can anyone please help me?

Download and Install Java Plugin and Use the OBJECT tag instead of the APPLET tag.

Cannot get java window to run at all.

I'm using 1.4.2, and cannot get any java to run at all. It's on a Windows 2000 server, and I've rebooted it a few times. Can't even get the Java Applet window to open from the control panel. javaw.exe runs in the task manager, but that's it. Any ideas? Anything else I need?

That's the Java Control Panel you can't open.
Try uninstalling ALL Java versions, rebooting after each uninstall, and manually removing any directories that Java made after all are removed. Reboot again, then download a new offline Java installer file and install that. There's something in the machine that's bad.

Getting java program to run (really basic)

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