向 JFrame 窗口的边框添加标题

Question

I'm trying to add a title to the border of a JFrame Window, can anyone tell me how can I do this? I am using NetBeans

The title should be in this position:

This is what I tried so far:

package cinema.booking.system;

import javax.swing.JFrame;
import javax.swing.border.TitledBorder;
import javax.*;

/**
 * @author chriz
 */    
public class About extends javax.swing.JFrame {

    /**
     * Creates new form About
     */
    public About() {
        initComponents();
        JFrame frame = new JFrame("Welcome"):
        frame.setTitle("Welcome");
    }
}

Answer 1

There are two ways to set the JFrame title:

I) Set the JFrame title when you construct your JFrame:

JFrame jframe = new JFrame("Title");

II) Once you have a valid JFrame object, you can call the setTitle method of the JFrame class:

jframe.setTitle("Title");

Answer 2

This is very simple. You can do one of the following:

1. Use Frame#setTitle(java.lang.String)
2. Use JFrame#JFrame(java.lang.String)

Since your class About extends JFrame , can just use the super keyword to solve all your life's problems. You can either use the superclass constructor, or invoke the setTitle method:

public About() {
    super("Welcome");
    initComponents();
}

or

public About() {
    initComponents();
    super.setTitle("Welcome");
}