我已经建立了一个jar使用 Netbeans 创建文件，它在我的系统中运行良好。但我想做jar能够在所有具有 JRE 的系统中运行的文件，即使是classpath没有在该系统中设置。
package circle;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.Graphics;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import javax.swing.BorderFactory;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.SwingUtilities;
public class Circle {
public static void main(String[] args) {
SwingUtilities.invokeLater(new Runnable() {
public void run() {
new Circle().createAndShowGUI();
}
});
}
private void createAndShowGUI() {
JFrame f = new JFrame("Swing Paint Demo");
f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
f.add(new MyPanel());
f.pack();
f.setVisible(true);
}
class MyPanel extends JPanel {
public MyPanel() {
setBorder(BorderFactory.createLineBorder(Color.black));
addMouseListener(new MouseAdapter() {
public void mousePressed(MouseEvent e) {
startX=e.getX();
startY=e.getY();
}
});
addMouseMotionListener(new MouseAdapter() {
public void mouseDragged(MouseEvent e) {
X=e.getX();
Y=e.getY();
repaint();
}
});
}
public Dimension getPreferredSize() {
return new Dimension(250,200);
}
protected void paintComponent(Graphics g) {
super.paintComponent(g);
//g.setColor(Color.RED);
//g.fillRect(squareX,squareY,squareW,squareH);
g.setColor(Color.BLACK);
g.drawOval(startX,startY,X-startX,Y-startY);
g.fillOval(startX,startY,X-startX,Y-startY);
}
}
private int startX,startY,X,Y;
}
您可以使用ant构建可运行 JAR 的脚本。
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<project default="create_run_jar" name="Create Runnable Jar for Project SimpleApp with libraries in sub-folder">
<!--ANT 1.7 is required -->
<target name="create_run_jar">
<jar destfile="C:/Workspaces/SimpleApp/SimpleApp.jar">
<manifest>
<attribute name="Main-Class" value="SimpleApp"/>
<attribute name="Class-Path" value=". SimpleApp_lib/lib1.jar SimpleApp_lib/lib2.jar"/>
</manifest>
<fileset dir="C:/Workspaces/SimpleApp/bin"/>
</jar>
<delete dir="C:/Workspaces/SimpleApp/SimpleApp_lib"/>
<mkdir dir="C:/Workspaces/SimpleApp/SimpleApp_lib"/>
<copy file="C:/path/to/lib/lib1.jar" todir="C:/Workspaces/SimpleApp/SimpleApp_lib"/>
<copy file="C:/path/to/lib/lib2.jar" todir="C:/Workspaces/SimpleApp/SimpleApp_lib"/>
</target>
</project>
在此示例中，该项目的SimpleApp取决于两个库：lib1.jar and lib2.jar，输出到bin with a MANIFEST.MF具有指定的属性。
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