HelloWorldSwing.jar doesn't execute with a double-click, it gives "could not
find the main class. program will exit," as an error.
is this a problem with build.xml?
Microsoft Windows 2000 [Version 5.00.2195]
(C) Copyright 1985-2000 Microsoft Corp.
C:\Documents and Settings\Administrator>d:
D:\>ant
Buildfile: build.xml
clean:
[delete] Deleting directory D:\java\classes
prepare:
[mkdir] Created dir: D:\java\classes
compile:
[javac] Compiling 1 source file to D:\java\classes
manifest:
package:
[jar] Building jar: D:\java\classes\HelloWorldSwing.jar
BUILD SUCCESSFUL
Total time: 4 seconds
D:\>type build.xml
<project name="HelloWorldBuild" default="package">
<property name="outputDir" value="D:\java\classes\" />
<property name="sourceDir" value="D:\java\src\atreides\hello\" />
<property name="mainClass" value="HelloWorldSwing" />
<target name="clean">
<delete dir="${outputDir}" />
</target>
<target name="prepare" depends="clean">
<mkdir dir="${outputDir}" />
</target>
<target name="compile" depends="prepare">
<javac srcdir="${sourceDir}" destdir="${outputDir}" />
</target>
<target name="manifest" depends="compile">
<manifest file="${outputDir}/MANIFEST.MF">
<attribute name="Main-Class"
value="${mainClass}" />
</manifest>
</target>
<target name="package" depends="manifest">
<jar jarfile="${outputDir}/${mainClass}.jar"
basedir="${outputDir}"
manifest="${outputDir}/MANIFEST.MF" />
</target>
</project>
D:\>cd java\classes\hello
D:\java\classes\hello>dir
Volume in drive D has no label.
Volume Serial Number is 1CBF-03ED
Directory of D:\java\classes\hello
03/14/2005 08:21a <DIR> .
03/14/2005 08:21a <DIR> ..
03/14/2005 08:21a 349 HelloWorldSwing$1.class
03/14/2005 08:21a 897 HelloWorldSwing.class
2 File(s) 1,246 bytes
2 Dir(s) 3,585,163,264 bytes free
D:\java\classes\hello>cd ..
D:\java\classes>dir
Volume in drive D has no label.
Volume Serial Number is 1CBF-03ED
Directory of D:\java\classes
03/14/2005 08:21a <DIR> .
03/14/2005 08:21a <DIR> ..
03/14/2005 08:21a <DIR> hello
03/14/2005 08:21a 135 MANIFEST.MF
03/14/2005 08:21a 1,746 HelloWorldSwing.jar
2 File(s) 1,881 bytes
3 Dir(s) 3,585,163,264 bytes free
D:\java\classes>type MANIFEST.MF
Manifest-Version: 1.0
Ant-Version: Apache Ant 1.6.2
Created-By: 1.5.0_02-b09 (Sun Microsystems Inc.)
Main-Class: HelloWorldSwing
D:\java\classes>cd ..
D:\java>cd src\atreides\hello
D:\java\src\atreides\hello>dir
Volume in drive D has no label.
Volume Serial Number is 1CBF-03ED
Directory of D:\java\src\atreides\hello
03/14/2005 07:04a <DIR> .
03/14/2005 07:04a <DIR> ..
03/14/2005 07:26a 1,132 HelloWorldSwing.java
1 File(s) 1,132 bytes
2 Dir(s) 3,585,163,264 bytes free
D:\java\src\atreides\hello>type HelloWorldSwing.java
package hello;
import javax.swing.*;
public class HelloWorldSwing {
/**
* Create the GUI and show it. For thread safety,
* this method should be invoked from the
* event-dispatching thread.
*/
private static void createAndShowGUI() {
//Make sure we have nice window decorations.
JFrame.setDefaultLookAndFeelDecorated(true);
//Create and set up the window.
JFrame frame = new JFrame("HelloWorldSwing");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
//Add the ubiquitous "Hello World" label.
JLabel label = new JLabel("Hello World");
frame.getContentPane().add(label);
//Display the window.
frame.pack();
frame.setVisible(true);
}
public static void main(String[] args) {
//Schedule a job for the event-dispatching thread:
//creating and showing this application's GUI.
javax.swing.SwingUtilities.invokeLater(new Runnable() {
public void run() {
createAndShowGUI();
}
});
}
}
D:\java\src\atreides\hello>
thanks,
Thufir
---------------------------------------------------------------------
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
