代码1

package com.itheima_02;

public class App{
    public static void main(String[] args) {
        PictureFrame pf=new PictureFrame();

    }
}

代码2

package com.itheima_02;

import javax.swing.*;

public class PictureFrame extends JFrame {
    public PictureFrame(){
        //用于窗体的基本设置

        initFrame();

        //窗体上组件的绘制
        paintView();

        //设置窗体可见
        this.setVisible(true);

    }

    //窗体上组件的绘制
    public void paintView(){
        //标题图片
        JLabel titleLabel=new JLabel(new ImageIcon("itheima_picture_puzzle\\images\\title.png"));
        titleLabel.setBounds(354,27,232,57);
        this.add(titleLabel);

        //定义一个二维数组用来存储图片的编号
        int[][] datas={
                {1,2,3,4},
                {5,6,7,8},
                {9,10,11,12},
                {13,14,15,16}
        };
        //创建面板
        JPanel imagePanel=new JPanel();
        imagePanel.setBounds(150,114,360,360);
        imagePanel.setLayout(null);//取消面板的默认布局
        //遍历二维数组得到图片编号
        for (int i = 0; i < datas.length; i++) {
            for (int j = 0; j < datas[i].length; j++) {
                //创建JLabel对象加载图片资源
                JLabel  imageLabel=new JLabel(new ImageIcon("itheima_picture_puzzle\\images\\"+datas[i][j]+".png"));
                //调整图片的位置
                imageLabel.setBounds(j*90,i*90,90,90);
                imagePanel.add(imageLabel);
            }
        }
//        把面板添加到窗体上
        this.add(imagePanel);

        //动漫参照图
        JLabel canZhaoTuLabel=new JLabel(new ImageIcon("itheima_picture_puzzle\\images\\canzhaotu.png"));
        canZhaoTuLabel.setBounds(574,114,122,121);
        this.add(canZhaoTuLabel);

        //上下左右按钮以及求助重置按钮
        JButton shangButton =new JButton(new ImageIcon("itheima_picture_puzzle\\images\\shang.png"));
        shangButton.setBounds(732,265,57,57);
        this.add(shangButton);


        JButton zuoButton =new JButton(new ImageIcon("itheima_picture_puzzle\\images\\zuo.png"));
        zuoButton.setBounds(650,347,57,57);
        this.add(zuoButton);


        JButton xiaButton =new JButton(new ImageIcon("itheima_picture_puzzle\\images\\xia.png"));
        xiaButton.setBounds(732,347,57,57);
        this.add(xiaButton);


        JButton youButton =new JButton(new ImageIcon("itheima_picture_puzzle\\images\\you.png"));
        youButton.setBounds(813,347,57,57);
        this.add(youButton);


        JButton qiuzhuButton =new JButton(new ImageIcon("itheima_picture_puzzle\\images\\qiuzhu.png"));
        qiuzhuButton.setBounds(626,444,108,45);
        this.add(qiuzhuButton);


        JButton chognzhiButton =new JButton(new ImageIcon("itheima_picture_puzzle\\images\\chongzhi.png"));
        chognzhiButton.setBounds(786,444,108,45);
        this.add(chognzhiButton);


        //展示背景图
        JLabel backgroundLabel =new JLabel( new ImageIcon("itheima_picture_puzzle\\images\\background.png"));
        backgroundLabel.setBounds(0,0,960,530);
        this.add(backgroundLabel);
    }


    //用于窗体的基本设置
    public void initFrame(){
        //窗体大小
        this.setSize(960,565);

        //窗体标题
        this.setTitle("动漫拼图");

        //窗体居中
        this.setLocationRelativeTo(null);

        //窗体关闭时退出程序
        this.setDefaultCloseOperation(3);

        //窗体要位于其他窗口之上
        this.setAlwaysOnTop(true);

        //取消窗体默认布局
        this.setLayout(null);
    }
}

执行结果