怎样把窗口的lookandfeel设置成Metal样式？

Question

String laf = "javax.swing.plaf.metal.MetalLookAndFeel";try {
    UIManager.setLookAndFeel(laf);
} catch (Exception e) { }

Answer 1

插入到程序界面载入前比如 main() 方法里最前面

Answer 2

import javax.swing.*;
import java.awt.*;
public class JFrameTest extends JFrame{ public JFrameTest (){
super("这是一个测试程序!");
setBounds(200,200,200,200);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
show();
}

public static void main(String args[]){
try{
/*设置LookAndFeel*/
UIManager.setLookAndFeel("com.sun.java.swing.plaf.motif.MotifLookAndFeel");
/*也可以设置为下列的LookAndFeel*/
//UIManager.setLookAndFeel("com.sun.java.swing.plaf.windows.WindowsLookAndFeel");
//UIManager.setLookAndFeel("com.sun.java.swing.plaf.gtk.GTKLookAndFeel");
}
catch(ClassNotFoundException e){
e.printStackTrace();
}
catch(InstantiationException e){

e.printStackTrace();
}
catch(IllegalAccessException e){
e.printStackTrace();
}
catch(UnsupportedLookAndFeelException e){
e.printStackTrace();
}
JFrameTest test=new JFrameTest();


}
}