帮你修改好了。import java.awt.*;
import javax.swing.*;
import java.awt.event.*;
import javax.swing.border.*;public class book
extends JFrame {
static bookpanel bp = new bookpanel(); public book() {
this.setBounds(100, 100, 500, 500);
this.setTitle("This is the Title");
this.getContentPane();
} public static void main(String[] args) {
JFrame bj = new book();
bj.setVisible(true);
}
}class bookpanel
extends JPanel {
public bookpanel() { }
}
import javax.swing.*;
import java.awt.event.*;
import javax.swing.border.*;public class book
extends JFrame {
static bookpanel bp = new bookpanel(); public book() {
this.setBounds(100, 100, 500, 500);
this.setTitle("This is the Title");
this.getContentPane();
} public static void main(String[] args) {
JFrame bj = new book();
bj.setVisible(true);
}
}class bookpanel
extends JPanel {
public bookpanel() { }
}
class book extends JFrame
{
//.....}
public class book extends JFrame{}