Question

帮忙，java界面添加背景图片代码

import java.awt.Choice;
import java.awt.Font;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPasswordField;
import javax.swing.JTextField;

public class Zhuce implements ActionListener {
JFrame jf;
JLabel jtimu, j1, j2, j3, j4, j5;
JTextField jtf1, jtf2;
String g, x;
JButton jb1, jb2;

Zhuce() {

jf = new JFrame();
jf.setBounds(100, 100, 250, 250);
jf.setLayout(null);

jtimu = new JLabel("请输入新的用户名和密码");
jtimu.setFont(new Font("华文行楷", Font.BOLD, 20));
jf.getContentPane().add(jtimu);
jtimu.setBounds(5, 5, 300, 20);

j1 = new JLabel("新的用户名:");
jf.getContentPane().add(j1);
j1.setBounds(35, 35, 135, 30);
j1.setFont(new Font("隶书", Font.BOLD, 18));
jtf1 = new JTextField(10);
jf.getContentPane().add(jtf1);
jtf1.setBounds(140, 38, 85, 25);

j2 = new JLabel("新的密码:");
jf.getContentPane().add(j2);
j2.setBounds(35, 45, 150, 60);
j2.setFont(new Font("隶书", Font.BOLD, 18));
JPasswordField pf = new JPasswordField(30);
pf.setEchoChar('*');
jf.getContentPane().add(pf);
pf.setBounds(135, 65, 85, 25);

jb1 = new JButton("确定");
jf.getContentPane().add(jb1);
jb1.setBounds(35, 130, 70, 25);

jb2 = new JButton("返回");
jf.getContentPane().add(jb2);
jb2.setBounds(120, 130, 70, 25);
jb2.addActionListener(this);

jf.setTitle("注册界面");
jf.setVisible(true);

}

@Override
public void actionPerformed(ActionEvent e) {
if (e.getSource() == jb2) {
new Denglu();

}
}

}

Answer 1

首先继承JPanel类，然后重写paintComponent方法
给你个例子，这是重写的方法
public void paintComponent(Graphics gs) {
Graphics2D g = (Graphics2D) gs;
super.paintComponent(g);
//画背景图片
g.drawImage(gameBG.getImage(), 0, 0, 800, 560, this);
}

记住，要先画图片，再画文字，否则会被覆盖

Answer 2

帮不了你 啊实打实的阿萨德 阿萨德安上打算的