JFrame背景图片

这是一个在Jframe中添加背景图像的简单示例：

import javax.swing.*;import java.awt.*;import java.awt.event.*;class BackgroundImageJframe extends Jframe{    JButton b1;    JLabel l1;    public BackgroundImageJframe()    {        setTitle("Background Color for Jframe");        setSize(400,400);        setLocationRelativeTo(null);        setDefaultCloseOperation(EXIT_ON_CLOSE);        setVisible(true);                // Another way        setLayout(new BorderLayout());        setContentPane(new JLabel(new ImageIcon("C:\Users\Computer\Downloads\colorful design.png")));        setLayout(new FlowLayout());        l1=new JLabel("Here is a button");        b1=new JButton("I am a button");        add(l1);        add(b1);        // Just for refresh :) Not optional!        setSize(399,399);        setSize(400,400);    }    public static void main(String args[])    {        new BackgroundImageJframe();    }}

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