import javax.swing.*;
public class Delete { public Delete() {
}
public static void main(String[] args){
JOptionPane.showMessageDialog(this,"hello.");
}
}
对吗???
public class Delete { public Delete() {
}
public static void main(String[] args){
JOptionPane.showMessageDialog(this,"hello.");
}
}
对吗???
a=args.length
JOptionPane.showMessageDialog(null,"错误!", a,JOptionPane.WARNING_MESSAGE);
System.exit(0);
有什么错的吗??
可以实现你的想法
{
public void actionPerformed(ActionEvent ae)
{
JOptionPane.showMessageDialog(***);
}
}
);