本文摘要：该Java Swing编程示例主要围绕swingJpanelQieHuan类实现界面布局切换，其中使用了JPanel、JTree组件以及ActionListener事件处理机制。在JFrame窗口中，通过点击JButton（如“点赞界面”和“三连关注界面”）触发事件，进而动态切换不同颜色边框的 JPanel（如jpRed、jpPink等）。同时，该示例还涉及图片素材显示及右键保存功能，并展示了如何基于用户交互操作（如JTree节点点击）弹出新的登录窗体，其中包括JLabel、JTextField、JPasswordField和JComboBox等组件的使用。

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本篇文章为转载内容。原文链接：https://blog.csdn.net/weixin_39929646/article/details/114190817。

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在PC端点击图片，鼠标右键可把图片素材另存到桌面使用，手机端可长按图片保存到本地相册，夏欢和认为有用的话就点个赞，三连就更满足我的期待了

JPanel切换案例

package swing;

public class mains {

public static void main(String[] args) {

new swingJpanelQieHuan();

}

package swing;

import java.awt.Color;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import javax.swing.*;

public class swingJpanelQieHuan extends JFrame{

public static JPanel jpRed,jpPink,jpBlueRightBottom1,

jpGreenRightBottom2;

public static JButton anNiu1,anNiu2;

JLabel JLabel1;

public static JLabel JLabel2;

public swingJpanelQieHuan(){

this.setLayout(null);

this.setSize(700,700);

this.setLocationRelativeTo(null);

jpRed=new JPanel();

jpPink=new JPanel();

jpBlueRightBottom1=new JPanel();

jpGreenRightBottom2=new JPanel();

jpRed.setLayout(null);

anNiu1=new JButton("点赞界面");

anNiu2=new JButton("三连关注界面");

anNiu1.setBounds(150,30,120,30);

anNiu2.setBounds(300,30,120,30);

anNiu1.addActionListener(new swingJpanelShiJian(this));

anNiu2.addActionListener(new swingJpanelShiJian(this));

jpRed.add(anNiu1);jpRed.add(anNiu2);

jpRed.setBorder(BorderFactory.createLineBorder(Color.red));

jpPink.setBorder(BorderFactory.createLineBorder(Color.pink));

jpBlueRightBottom1.setBorder

(BorderFactory.createLineBorder(Color.blue));

jpGreenRightBottom2.setBorder

(BorderFactory.createLineBorder(Color.green));

jpRed.setBounds(10,10,600,150);

jpPink.setBounds(10,170,200,450);

jpBlueRightBottom1.setBounds(220, 170, 380, 450);

jpGreenRightBottom2.setBounds(220, 170, 380, 450);

JLabel1 = new JLabel();

JLabel2=new JLabel();

JLabel1. setIcon(new ImageIcon("img//1.png"));

JLabel2. setIcon(new ImageIcon("img//2.png"));

jpBlueRightBottom1.add(JLabel1);

jpGreenRightBottom2.add(JLabel2);

this.add(jpRed);this.add(jpPink);

this.add(jpGreenRightBottom2);

this.add(jpBlueRightBottom1);

this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

this.setVisible(true);

}

class swingJpanelShiJian implements ActionListener{

//jieShou接收

//chuangTi窗体

public static swingJpanelQieHuan jieShou;

public swingJpanelShiJian(swingJpanelQieHuan chuangTi){

jieShou=chuangTi;

}

@Override

public void actionPerformed(ActionEvent arg0) {

String neiRong=arg0.getActionCommand();

if(neiRong.equals("点赞界面")){

jieShou.jpBlueRightBottom1.setVisible(true);

jieShou.jpGreenRightBottom2.setVisible(false);

}else if(neiRong.equals("三连关注界面")){

jieShou.jpBlueRightBottom1.setVisible(false);

jieShou.jpGreenRightBottom2.setVisible(true);

}

JTree树形控件点击内容弹出新的窗体

package swing;

public class mains {

public static void main(String[] args) {

new swingJpanelQieHuan();

}

package swing;

import java.awt.Color;

import java.awt.Font;

import javax.swing.*;

public class newDengLu extends JFrame{

public static JLabel lb1,lb2,lb3,lb4=null;

public static JTextField txt1=null;

public static JPasswordField pwd=null;

public static JComboBox com=null;

public static JButton btn1,btn2=null;

public newDengLu(){

this.setTitle("诗书画唱登录页面");

this.setLayout(null);

this.setSize(500,400);

this.setLocationRelativeTo(null);

lb1=new JLabel("用户名");

lb2=new JLabel("用户密码");

lb3=new JLabel("用户类型");

lb4=new JLabel("登录窗体");

Font f=new Font("微软雅黑",Font.BOLD,35);

lb4.setFont(f);

lb4.setForeground(Color.red);

lb4.setBounds(160,30,140,40);

lb1.setBounds(100, 100, 70,30);

lb2.setBounds(100,140,70,30);

lb3.setBounds(100,180,70,30);

txt1=new JTextField();

txt1.setBounds(170,100,150,30);

pwd=new JPasswordField();

pwd.setBounds(170,140,150,30);

com=new JComboBox();

com.addItem("会员用户");

com.addItem("普通用户");

com.setBounds(170,180,150,30);

btn1=new JButton("登录");

btn1.setBounds(130,220,70,30);

btn2=new JButton("取消");

btn2.setBounds(240,220,70,30);

this.add(lb1);this.add(lb2);this.add(lb3);

this.add(txt1);this.add(pwd);this.add(com);

this.add(btn1);this.add(btn2);this.add(lb4);

//this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

this.setVisible(true);

}

package swing;

import java.awt.Color;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import javax.swing.*;

import javax.swing.event.TreeSelectionEvent;

import javax.swing.event.TreeSelectionListener;

import javax.swing.tree.DefaultMutableTreeNode;

public class swingJpanelQieHuan extends JFrame{

public static JPanel jpRed,jpPinkLeft,jpBlueRightBottom1,

jpGreenRightBottom2;

public static JTree JTree1,JTree2;

public static JButton anNiu1,anNiu2;

public static JLabel JLabel1,JLabel2;

public swingJpanelQieHuan(){

this.setLayout(null);

this.setSize(700,700);

this.setLocationRelativeTo(null);

jpRed=new JPanel();

jpPinkLeft=new JPanel();

jpBlueRightBottom1=new JPanel();

jpGreenRightBottom2=new JPanel();

jpRed.setLayout(null);

anNiu1=new JButton("点赞界面");

anNiu2=new JButton("三连关注界面");

anNiu1.setBounds(150,30,120,30);

anNiu2.setBounds(300,30,120,30);

anNiu1.addActionListener(new swingJpanelShiJian(this));

anNiu2.addActionListener(new swingJpanelShiJian(this));

jpRed.add(anNiu1);jpRed.add(anNiu2);

jpRed.setBorder(BorderFactory.createLineBorder(Color.red));

jpPinkLeft.setBorder(BorderFactory.createLineBorder(Color.pink));

jpBlueRightBottom1.setBorder

(BorderFactory.createLineBorder(Color.blue));

jpGreenRightBottom2.setBorder

(BorderFactory.createLineBorder(Color.green));

jpRed.setBounds(10,10,600,150);

jpPinkLeft.setBounds(10,170,200,450);

jpBlueRightBottom1.setBounds(220, 170, 380, 450);

jpGreenRightBottom2.setBounds(220, 170, 380, 450);

JLabel1 = new JLabel();

JLabel2=new JLabel();

JLabel1. setIcon(new ImageIcon("img//1.png"));

JLabel2. setIcon(new ImageIcon("img//2.png"));

jpBlueRightBottom1.add(JLabel1);

jpGreenRightBottom2.add(JLabel2);

DefaultMutableTreeNode dmtn1 = new DefaultMutableTreeNode("图书管理");

DefaultMutableTreeNode dmtn_yonghu = new DefaultMutableTreeNode

("用户管理");

DefaultMutableTreeNode dmtnQieHuan = new DefaultMutableTreeNode

("切换到登录界面");

DefaultMutableTreeNode dmtn_yonghu_insert =

new DefaultMutableTreeNode("增加用户");

DefaultMutableTreeNode dmtn_yonghu_update =

new DefaultMutableTreeNode("修改用户");

DefaultMutableTreeNode dmtn_yonghu_delete =

new DefaultMutableTreeNode("删除用户");

DefaultMutableTreeNode dmtn_yonghu_select =

new DefaultMutableTreeNode("查询用户");

DefaultMutableTreeNode dmtn_jieyue =

new DefaultMutableTreeNode("借阅管理");

DefaultMutableTreeNode dmtn_jieyue_insert =

new DefaultMutableTreeNode("增加借阅信息");

DefaultMutableTreeNode dmtn_jieyue_update =

new DefaultMutableTreeNode("修改借阅信息");

DefaultMutableTreeNode dmtn_jieyue_delete =

new DefaultMutableTreeNode("删除借阅信息");

DefaultMutableTreeNode dmtn_jieyue_select =

new DefaultMutableTreeNode("查询借阅信息");

dmtn_yonghu.add(dmtnQieHuan);

dmtn_yonghu.add(dmtn_yonghu_insert);

dmtn_yonghu.add(dmtn_yonghu_update);

dmtn_yonghu.add(dmtn_yonghu_delete);

dmtn_yonghu.add(dmtn_yonghu_select);

dmtn_jieyue.add(dmtn_jieyue_insert);

dmtn_jieyue.add(dmtn_jieyue_update);

dmtn_jieyue.add(dmtn_jieyue_delete);

dmtn_jieyue.add(dmtn_jieyue_select);

dmtn1.add(dmtn_yonghu);

dmtn1.add(dmtn_jieyue);

JTree1 = new JTree(dmtn1);

JTree1.addTreeSelectionListener(new

swingJpanelShiJian(this));

JTree1.setBackground(Color.white);

jpPinkLeft.setBackground(Color.white);

//JTree1.setBounds(10,170,200,450);在这里是一句没效果的代码

jpPinkLeft.add(JTree1);

this.add(jpRed);this.add(jpPinkLeft);

this.add(jpGreenRightBottom2);

this.add(jpBlueRightBottom1);

this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

this.setVisible(true);

}

class swingJpanelShiJian implements ActionListener,

TreeSelectionListener{

//jieShou接收

//chuangTi窗体

public static swingJpanelQieHuan jieShou;

public swingJpanelShiJian(swingJpanelQieHuan chuangTi){

jieShou=chuangTi;

}

@Override

public void actionPerformed(ActionEvent arg0) {

String neiRong=arg0.getActionCommand();

if(neiRong.equals("点赞界面")){

jieShou.jpBlueRightBottom1.setVisible(true);

jieShou.jpGreenRightBottom2.setVisible(false);

}else if(neiRong.equals("三连关注界面")){

jieShou.jpBlueRightBottom1.setVisible(false);

jieShou.jpGreenRightBottom2.setVisible(true);

}

@Override

public void valueChanged(TreeSelectionEvent arg0) {

DefaultMutableTreeNode str = (DefaultMutableTreeNode)

jieShou.JTree1

.getLastSelectedPathComponent();

if (str.toString().equals("切换到登录界面")) {

new newDengLu();

} else {

}

JTable初始化表格

package swing;

public class mains {

public static void main(String[] args) {

new swingBiaoGe();

}

package swing;

import java.util.Vector;

import javax.swing.*;

import javax.swing.table.DefaultTableModel;

public class swingBiaoGe extends JFrame{

//要声明：装载内容的容器，table的控件，容器的标题，容器的具体的内容。

public static JTable biaoGe=null;//JTable为表格的控件

//要声明装载内容的容器，如下：

public static DefaultTableModel DTM=null;

//Vector中：

//一个放标题，一个放内容

//>表示只接受集合的类型

Vector biaoTi;

Vector> neiRong;

public swingBiaoGe(){

this.setLayout(null);

this.setSize(600,600);

this.setLocationRelativeTo(null);

//给标题赋值：

biaoTi=new Vector();

biaoTi.add("编号");biaoTi.add("姓名");

biaoTi.add("性别");biaoTi.add("年龄");

//给内容赋值：

neiRong=new Vector>();

for(int i=0;i<5;i++){

Vector v=new Vector();

v.add("编号"+(i+6));v.add("诗书画唱"+(i+6));

v.add("性别"+(i+6));v.add("年龄"+(i+6));

neiRong.add(v);

}

//将内容添加到装载内容的容器中：

DTM=new DefaultTableModel(neiRong,biaoTi);

DTM=new DefaultTableModel(neiRong,biaoTi) {

@Override

public boolean isCellEditable(int a, int b) {

return false;

}

};

biaoGe=new JTable(DTM);

//设置滚动条：

JScrollPane jsp=new JScrollPane(biaoGe);

jsp.setBounds(10,10,400,400);

this.add(jsp);

this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

this.setVisible(true);

}

JTable初始化数据，数据要求链接JDBC获取

create database yonghu

select * from shangpin;

select * from sp_Type;

create table sp_Type(

sp_TypeID int primary key identity(1,1),

sp_TypeName varchar(100) not null

);

insert into sp_Type values('水果');

insert into sp_Type values('零食');

insert into sp_Type values('小吃');

insert into sp_Type values('日常用品');

create table shangpin(

sp_ID int primary key identity(1,1),

sp_Name varchar(100) not null,

sp_Price decimal(10,2) not null,

sp_TypeID int,

sp_Jieshao varchar(300)

);

insert into shangpin values('苹果',12,1,'好吃的苹果');

insert into shangpin values('香蕉',2,1,'好吃的香蕉');

insert into shangpin values('橘子',4,1,'好吃的橘子');

insert into shangpin values('娃哈哈',3,2,'好吃营养好');

insert into shangpin values('牙刷',5,4,'全自动牙刷');

package SwingJdbc;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import java.awt.event.MouseEvent;

import java.awt.event.MouseListener;

import java.sql.ResultSet;

import java.sql.SQLException;

import java.util.Vector;

import javax.swing.JButton;

import javax.swing.JComboBox;

import javax.swing.JFrame;

import javax.swing.JLabel;

import javax.swing.JOptionPane;

import javax.swing.JPanel;

import javax.swing.JScrollPane;

import javax.swing.JTable;

import javax.swing.JTextField;

import javax.swing.table.DefaultTableModel;

public class biaoGe extends JFrame {

class shiJian implements MouseListener, ActionListener {

public biaoGe jieShou = null;

public shiJian(biaoGe chuangTi) {

this.jieShou = chuangTi;

}

@Override

public void actionPerformed(ActionEvent arg0) {

String name = jieShou.wenBenKuangName.getText();

String price = jieShou.wenBenKuangPrice.getText();

String type = jieShou.wenBenKuangTypeId.getText();

String jieshao = jieShou.wenBenKuangJieShao.

getText();

String sql = "insert into shangpin values('" + name + "'" + ", "

+ price + "," + type + ",'" + jieshao + "')";

if (DBUtils.ZSG(sql)) {

JOptionPane.showMessageDialog(null, "增加成功");

jieShou.chaxunchushihua();

} else {

JOptionPane.showMessageDialog(null, "出现了未知的错误，增加失败");

}

@Override

public void mouseClicked(MouseEvent arg0) {

if (arg0.getClickCount() == 2) {

int row = jieShou.biaoGe1.getSelectedRow();

jieShou.wenBenKuangBianHao