To make your Java application looking like all other applications on your system you have to use the System's Look And Feel. This tutorial shows how. more >>
import javax.swing.*;
public class LookAndFeel {
public static void main(String[] args){
//Look and feel
try {
// Set System L&F
UIManager.setLookAndFeel(
UIManager.getSystemLookAndFeelClassName());
}
catch (Exception e) {
System.out.println("Cannot set System's Look And Feel!");
}
JFrame f=new JFrame("System's Look And Feel");
JButton b=new JButton("Test Button");
f.getContentPane().add(b);
f.pack();
f.setVisible(true);
}
}