import javax.swing.*;

public class Sun
{
public static void main (String[] args)
{
JFrame f = new JFrame ("Sun");
f.setDefaultCloseOperation (JFrame.EXIT_ON_CLOSE);

JPanel p = new JPanel ();

JLabel l1 = new JLabel ("Kzs");
JLabel l2 = new JLabel ("Lqs");

p.add (l1);
p.add (l2);

f.getContentPane().add (p);
f.setSize();
f.setVisible (true);
}
}

import javax.swing.*;

public class Sun
{
public static void main (String[] args)
{
JFrame f = new JFrame ("Sun");
f.setDefaultCloseOperation (JFrame.EXIT_ON_CLOSE);

JPanel p = new JPanel ();

JLabel l1 = new JLabel ("Kzs");
JLabel l2 = new JLabel ("Lqs");

p.add (l1);
p.add (l2);

f.getContentPane().add (p);
f.setSize (600, 400);
f.setVisible (true);
}
}



为什么还是不能编译啊？？？？？？？？？？？？？？？