Java Swing

逃离我推掉我的手 2022-07-14 14:38 150阅读 0赞

![这里写图片描述][SouthEast]

package com.hz.test;
    
    import java.awt.Container;
    import java.awt.HeadlessException;
    import java.awt.Toolkit;
    import java.awt.event.MouseAdapter;
    import java.awt.event.MouseEvent;
    
    import javax.swing.JFrame;
    import javax.swing.JLabel;
    
    public class TestListener extends JFrame {
        
    
        private final int width = Toolkit.getDefaultToolkit().getScreenSize().width;
        private final int height = Toolkit.getDefaultToolkit().getScreenSize().height;
        //设置窗口的宽和高
        private final int windowWidth = 430;
        private final int windowHeight = 330;
    
        JLabel label;
        StringBuilder builder = new StringBuilder();
        public TestListener() throws HeadlessException {
    
            this.setTitle("登录");
            // 设置窗体位置和大小
            this.setBounds((width - windowWidth) / 2,
                    (height - windowHeight) / 2, windowWidth, windowHeight);
            Container container = getContentPane();
            container.setLayout(null);
            this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    //      this.setResizable(false);//设置窗体不可改变大小
            this.setVisible(true);
            label = new JLabel("龙");
            label.setSize(100, 50);
            this.addMouseMotionListener(new MouseAdapter() {
                @Override
                public void mouseMoved(MouseEvent e) {
                    super.mouseMoved(e);
                    int x = e.getX();
                    int y = e.getY();
                    label.setLocation(x, y);
                    label.setText("x = " + x + " ,Y = " + y);
                }
            });
            this.add(label);
        }
    
    
        public static void main(String[] args) {
            new TestListener();
        }
    }

![这里写图片描述][SouthEast 1]

package com.hz.test;
    
    import java.awt.event.MouseAdapter;
    import java.awt.event.MouseEvent;
    
    import javax.swing.JButton;
    import javax.swing.JFrame;
    import javax.swing.JLabel;
    import javax.swing.JMenuItem;
    import javax.swing.JPopupMenu;
    
    public class JPopMenu_Demo extends JFrame {
          
    
        // 弹出菜单的实现，弹出菜单是一个可弹出并显示一系列选项的小窗口  
        JPopupMenu popupMenu;   
    
        public JPopMenu_Demo() {  
            super("右键弹出式菜单"); // 调用父类构造函数  
            // 实例化弹出菜单   
            popupMenu = new JPopupMenu();   
            // 增加菜单项到菜单上  
            popupMenu.add(new JMenuItem("菜单项"));  
            popupMenu.add(new JButton("按钮"));   
            popupMenu.add(new JLabel("标签"));  
    
            myEvents();  
    
            setSize(350, 300); // 设置窗口大小  
            setLocation(400, 200);  
            setVisible(true); // 设置窗口为可视  
            setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); // 关闭窗口时退出程序  
        }  
    
        private void myEvents() {  
            // 窗口的鼠标事件处理  
            addMouseListener(new MouseAdapter() {   
                // 点击鼠标  
                public void mousePressed(MouseEvent event) {   
                    // 调用triggerEvent方法处理事件  
                    triggerEvent(event);   
                }  
                // 释放鼠标  
                public void mouseReleased(MouseEvent event) {   
                    triggerEvent(event);  
                }  
    
                private void triggerEvent(MouseEvent event) { // 处理事件  
                    // isPopupTrigger():返回此鼠标事件是否为该平台的弹出菜单触发事件。  
                    if (event.isPopupTrigger())   
                        // 显示菜单  
                        popupMenu.show(event.getComponent(), event.getX(),  
                                event.getY());   
                }  
            });  
        }  
    
    
        public static void main(String args[]) {  
            new JPopMenu_Demo();  
        }  
    }

![这里写图片描述][SouthEast 2]

package com.hz.test;
    
    import java.awt.BorderLayout;
    import java.awt.HeadlessException;
    import java.awt.Toolkit;
    import java.awt.event.MouseAdapter;
    import java.awt.event.MouseEvent;
    import java.util.Vector;
    
    import javax.swing.Box;
    import javax.swing.JButton;
    import javax.swing.JFrame;
    import javax.swing.JScrollPane;
    import javax.swing.JTable;
    import javax.swing.table.DefaultTableColumnModel;
    import javax.swing.table.DefaultTableModel;
    
    public class TestTable02 extends JFrame{
        
    
        private final int width = Toolkit.getDefaultToolkit().getScreenSize().width;
        private final int height = Toolkit.getDefaultToolkit().getScreenSize().height;
        //设置窗口的宽和高
        private final int windowWidth = 430;
        private final int windowHeight = 350;
    
        JTable table;
        JScrollPane scrollPane;
    
        Vector<Vector<String>> data;
        Vector<String> columnNames;
    
        JButton tianjia,shanchu;
        Box box = Box.createHorizontalBox(); 
        DefaultTableModel dm;   
        public TestTable02() throws HeadlessException {
            window();
            initData();
    
            dm = new DefaultTableModel(data, columnNames);
            table = new JTable(dm);
            scrollPane = new JScrollPane(table);
            this.add(scrollPane);
            tianjia = new JButton("添加");
            shanchu = new JButton("删除");
            box.add(Box.createHorizontalStrut(130));
            box.add(tianjia);
            box.add(Box.createHorizontalStrut(35));
            box.add(shanchu);
            this.add(box, BorderLayout.SOUTH);
            initTianjia();
        }
    
        private void initTianjia() {
            tianjia.addMouseListener(new MouseAdapter() {
                @Override
                public void mouseClicked(MouseEvent e) {
    
                    Vector<String> dataRow = new Vector<>();
                    dataRow.add(66+"");
                    dataRow.add("李四");
                    dataRow.add("女");
                    dataRow.add(20+"");
                    dataRow.add("计算机");
                    dataRow.add("");
                    data.add(dataRow);
                    dm.fireTableStructureChanged();
                }
            });
            shanchu.addMouseListener(new MouseAdapter() {
                @Override
                public void mouseClicked(MouseEvent e) {
                    int num = dm.getRowCount();
                    if(num > 0){
                        dm.removeRow(0);
                        dm.fireTableStructureChanged();
                    }
    
                }
            });
            table.addMouseListener(new MouseAdapter() {
                @Override
                public void mouseClicked(MouseEvent e) {
                    int index = table.getSelectedRow();
                    dm.removeRow(index);
                    dm.fireTableStructureChanged();
                }
            });
        }
    
        private void initData() {
            columnNames = new Vector<String>();
            columnNames.add("学号");
            columnNames.add("姓名");
            columnNames.add("性别");
            columnNames.add("年龄");
            columnNames.add("专业");
            columnNames.add("备注");
    
    
            data = new Vector<Vector<String>>();
            for (int i = 0; i < 20; i++) {
                Vector<String> dataRow = new Vector<>();
                dataRow.add(1 + i + "");
                dataRow.add("张三" + i);
                dataRow.add("男");
                dataRow.add(20 + i + "");
                dataRow.add("计算机");
                dataRow.add("");
                data.add(dataRow);
            } 
        }
        private void window() {
            this.setTitle("表格");
            // 设置窗体位置和大小
            this.setBounds((width - windowWidth) / 2,
                    (height - windowHeight) / 2, windowWidth, windowHeight);
            this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
            this.setResizable(false);//设置窗体不可改变大小
            this.setVisible(true);
    
        }
        public static void main(String[] args) {
            new TestTable02();
        }
    }

![这里写图片描述][SouthEast 3]

package com.hz.test;
    
    import java.awt.HeadlessException;
    import java.awt.Toolkit;
    import java.awt.event.MouseAdapter;
    import java.awt.event.MouseEvent;
    
    import javax.swing.JFrame;
    import javax.swing.JRootPane;
    import javax.swing.JTree;
    import javax.swing.tree.DefaultMutableTreeNode;
    import javax.swing.tree.TreePath;
    
    public class JTreeDemo extends JFrame {
        
    
        private final int width = Toolkit.getDefaultToolkit().getScreenSize().width;
        private final int height = Toolkit.getDefaultToolkit().getScreenSize().height;
        //设置窗口的宽和高
        private final int windowWidth = 278;
        private final int windowHeight = 600;
        JTree tree;
        public JTreeDemo() throws HeadlessException {
            window();
            DefaultMutableTreeNode node = new DefaultMutableTreeNode("QQ");
            //子目录
            DefaultMutableTreeNode node_1 = new DefaultMutableTreeNode("好友");
            DefaultMutableTreeNode node_2 = new DefaultMutableTreeNode("亲属");
            DefaultMutableTreeNode node_3 = new DefaultMutableTreeNode("同学");
            node.add(node_1);
            node.add(node_2);
            node.add(node_3);
            //创建好友
            Fridents f1 = new Fridents("张三", 20, 1);
            Fridents f2 = new Fridents("李四", 20, 1);
            Fridents f3 = new Fridents("王五", 20, 1);
            DefaultMutableTreeNode node_1_1 = new DefaultMutableTreeNode(f1);
            DefaultMutableTreeNode node_1_2 = new DefaultMutableTreeNode(f2);
            DefaultMutableTreeNode node_1_3 = new DefaultMutableTreeNode(f3);
            node_1.add(node_1_1);
            node_1.add(node_1_2);
            node_1.add(node_1_3);
            tree = new JTree(node);
            this.add(tree);
    
    
    
            initWindow();
        }
        private void initWindow() {
    
            /**
             * 选中监听
             */
    //      tree.addTreeSelectionListener(new TreeSelectionListener() {
        
    //          
    //          @Override
    //          public void valueChanged(TreeSelectionEvent e) {
        
    //
    //              //获取最后一个选中的Component
    //              DefaultMutableTreeNode treeNode = (DefaultMutableTreeNode) tree.getLastSelectedPathComponent();
    //              Object obj = treeNode.getUserObject();
    //              //判断是否是叶子节点
    //              if(treeNode.isLeaf() && obj instanceof Fridents){
        
    //                  Fridents fridents = (Fridents) treeNode.getUserObject();
    //                  System.out.println(
    //                          fridents.getName() + " " + 
    //                                  fridents.getAge() + " " + 
    //                                          fridents.getId());
    //              }
    //              
    //          }
    //      });
    
            tree.addMouseListener(new MouseAdapter() {
                @Override
                public void mouseClicked(MouseEvent e) {
    
                    TreePath path = tree.getPathForLocation(e.getX(), e.getY());
                    DefaultMutableTreeNode node = (DefaultMutableTreeNode) path.getLastPathComponent();
                    Object object = node.getUserObject();
                    if(e.getClickCount() == 2 && node.isLeaf() && object instanceof Fridents){
                        Fridents fridents = (Fridents) object;
                        System.out.println(
                                fridents.getName() + " " + 
                                        fridents.getAge() + " " + 
                                                fridents.getId());
                    }
                }
            });
        }
        public static void main(String[] args) {
            new JTreeDemo();
        }
        private void window() {
            this.setTitle("树状列表");
            // 设置窗体位置和大小
            this.setBounds((int) ((width - windowWidth)*1.0 / 1.1),
                     ((height - windowHeight) / 9), windowWidth, windowHeight);
            this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
            this.setUndecorated(true);//去掉窗口的装饰
            this.getRootPane().setWindowDecorationStyle(JRootPane.WIDTH);
            this.setResizable(false);//设置窗体不可改变大小
            this.setVisible(true);
    
        }
    }

[SouthEast]: /images/20220714/11b8c2bf28a84df18a61db35d46af3a9.png
[SouthEast 1]: /images/20220714/73658366c00841308d383b3cf7d7be20.png
[SouthEast 2]: /images/20220714/258a2161aff64d61bcf7b9982770ca87.png
[SouthEast 3]: /images/20220714/12adf4720cc04d6fa286e416582c11a5.png