ClassNotFoundException编译错误,SOS!!!!!
vpro 2002-06-13 09:27:11 以下是MySwing.java的内容:
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class MySwing extends JFrame
{
public MySwing()
{
super("My First GUI!");
setSize(400,200);
Container c = getContentPane();
c.setLayout(new BorderLayout());
c.add(new JLabel("label"));
UIManager.setLookAndFeel("com.sun.java.swing.plaf.motif.MotifLookAndFeel");
setVisible(true);
}
public static void main(String args[])
{
new MySwing();
}
}
编译:
C:\>javac MySwing.java
MySwing.java:15: unreported exception java.lang.ClassNotFoundException; must becaught or declared to be thrown
UIManager.setLookAndFeel"com.sun.java.swing.plaf.motif.MotifLookAndFeel
");
^
1 error
但不加 UIManager。。。这一行则一切正常,请问是为什么?谢谢!!!!