Java：GUI-Swing(上)

学习资料

b站狂神说：https://www.bilibili.com/video/BV1DJ411B75F

第一个窗口

package com.zy7y.gui.swing;

import javax.swing.*;
import java.awt.*;

/**
 * @ProjectName: JavaSE
 * @PackageName: com.zy7y.gui.swing
 * @Author: zy7y
 * @Date: 2020/8/16 下午1:30
 * @Description:  第一个swing JFrame窗口
 */
public class TestJFrame {
    public void init(){
          // 顶级窗口
          JFrame jFrame = new JFrame();
          jFrame.setTitle("swing第一个窗口");
          // 设置可见
          jFrame.setVisible(true);
          //设置尺寸
          jFrame.setBounds(100,100,100,100);

          // 设置标签
          JLabel jLabel = new JLabel("文本内容");
          jFrame.add(jLabel);
          // 设置标签居中到容器上
          jLabel.setHorizontalAlignment(SwingConstants.CENTER);

          // 容器实例化
          Container container = jFrame.getContentPane();
          container.setBackground(Color.green);
          container.setBounds(50,50,20,20);

          // 设置关闭事件
          jFrame.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
    }

    public static void main(String[] args) {
        new TestJFrame().init();
    }
}

JDialog弹窗

package com.zy7y.gui.swing;

import javax.swing.*;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

/**
 * @ProjectName: JavaSE
 * @PackageName: com.zy7y.gui.swing
 * @Author: zy7y
 * @Date: 2020/8/16 下午1:45
 * @Description: JDialog弹窗
 */
public class TestDialog {
    public static void main(String[] args) {
        new MyJFrame().init();
    }
}

class MyJFrame extends JFrame{

    public MyJFrame(){
        super("JDialog弹窗");
    }

    public void init(){
        setBounds(500,600,500,500);
        //容器
        Container container = getContentPane();
        // 绝对布局
        container.setLayout(null);

        // 按钮
        JButton jButton = new JButton("按钮1");
        jButton.setBounds(30,50,200,200);
        jButton.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                // 弹窗
                new MyDialog();
            }
        });
        // 将button添加到容器内
        container.add(jButton);
        // 设置可见
        setVisible(true);
    }

}

class MyDialog extends JDialog{
    public MyDialog(){
        setBounds(200,200,200,200);
        setBackground(Color.red);
        setTitle("弹出框");
        Container container = getContentPane();
        container.setLayout(null);
        JLabel jLabel = new JLabel("JavaSE-Swing-JDialog");
        jLabel.setSize(200,300);
        container.add(label);
        setVisible(true);
    }
}

标签

package com.zy7y.gui.swing;

import com.sun.javafx.tools.ant.Info;

import javax.swing.*;
import java.awt.*;
import java.awt.event.WindowAdapter;
import java.net.URL;

/**
 * @ProjectName: JavaSE
 * @PackageName: com.zy7y.gui.swing
 * @Author: zy7y
 * @Date: 2020/8/16 下午2:02
 * @Description: 标签
 */
public class TestLabel {
    public static void main(String[] args) {
        new MyLabel().init();
    }
}

class MyLabel extends JFrame {
    public void init(){
        setTitle("标签、图标");
        setBounds(300,300,300,300);
        Container container = getContentPane();
        JLabel jLabel = new JLabel("标签");
        // 设置图片，拿到路径对象
        URL url = MyLabel.class.getResource("test.png");
        // 图标
        ImageIcon icon = new ImageIcon(url);
        jLabel.setIcon(icon);
        container.add(jLabel);

        // 设置可关闭窗口
        setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);

        setVisible(true);
    }
}

面板

package com.zy7y.gui.swing;

import javax.swing.*;
import java.awt.*;

/**
 * @ProjectName: JavaSE
 * @PackageName: com.zy7y.gui.swing
 * @Author: zy7y
 * @Date: 2020/8/16 下午2:22
 * @Description: 面板
 */
public class TestJPanel extends JFrame {
    public TestJPanel(){
        setTitle("Swing-面板-JPanel");
        Container container = getContentPane();
        // 容器布局
        container.setLayout(new GridLayout(2,1,10,10)); // 2行1列 上下间距各为10
        // 实例化面板
        JPanel jPanel = new JPanel();
        jPanel.setLayout(new GridLayout(1,3)) ;
        JPanel jPane2 = new JPanel(new GridLayout(3,3));
        JPanel jPane3 = new JPanel(new GridLayout(2,2));

        JButton jButton = new JButton("按钮1");
        JButton jButton1 = new JButton("按钮2");
        JButton jButton2 = new JButton("按钮3");
        JButton jButton3 = new JButton("按钮4");

        // 将按钮添加到面板
        jPanel.add(jButton);
        jPane2.add(jButton1);
        jPane3.add(jButton3);
        jPane3.add(jButton2);


        // 将面板添加到容器
        container.add(jPanel);
        container.add(jPane2);
        container.add(jPane3);
        setVisible(true);
        setDefaultCloseOperation(EXIT_ON_CLOSE);
    }

    public static void main(String[] args) {
        new TestJPanel();
    }
}

JScroll

package com.zy7y.gui.swing;

import javax.swing.*;
import java.awt.*;


/**
 * @ProjectName: JavaSE
 * @PackageName: com.zy7y.gui.swing
 * @Author: zy7y
 * @Date: 2020/8/16 下午2:33
 * @Description: 文本域与JScroll
 */
public class TestJScroll extends JFrame {
    public TestJScroll(){
        setTitle("文本域与JScroll");
        Container container = getContentPane();

        // 文本域
        JTextArea jTextArea = new JTextArea(20,50); // 20行 50列
        jTextArea.setText("来写作文");

        //JScroll面板: 带滚动条的面板
        JScrollPane jScrollPane = new JScrollPane(jTextArea);
        container.add(jScrollPane);

        setVisible(true);
        setBounds(200,200,600,600);
        setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
    }

    public static void main(String[] args) {
        new TestJScroll();
    }
}