Java的GUI图形化

AWT

Frame窗口

package swing;

import java.awt.*;

public class TestFrame {

    public static void main(String[] args) {
    	//构造函数设置标题
        Frame frame = new Frame("第一个窗口");

        //设置可见性
        frame.setVisible(true);

        //设置窗口大小  宽 高
        frame.setSize(400,400);

        //设置初始加载位置 
        frame.setLocation(350,350);

        //设置背景颜色
        frame.setBackground(Color.ORANGE);

        //设置窗口大小固定
        frame.setResizable(false);
    }
}

Panel面板

package swing;

import java.awt.*;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;

/**
 * 面板Panel
 * Panel不能单独存在，需要配合Frame
 */
public class TestPanel {

    public static void main(String[] args) {
        Frame frame = new Frame();
        //创建一个面板
        Panel panel = new Panel();
        //设置布局（不设置无法显示面板）
        frame.setLayout(null);

        //设置frame坐标
        frame.setBounds(300,300,500,500);
        //设置背景颜色
        frame.setBackground(new Color(34, 144, 34));
        //设置可见性
        frame.setVisible(true);
        //设置不可变性
        frame.setResizable(false);

        //设置panel坐标，相对于Frame
        panel.setBounds(100,100,300,300);
        //设置背景颜色
        panel.setBackground(new Color(149, 24, 24));

        //将panel添加到frame
        frame.add(panel);

        //监听事件，监听Frame窗口关闭
        //适配器模式
        frame.addWindowListener(new WindowAdapter() {
            //窗口点击关闭事件
            @Override
            public void windowClosing(WindowEvent e) {
                System.exit(0);
            }
        });

    }
}

布局管理器

流式布局（FlowLayout）

package swing;

import java.awt.*;
/**
* 流式布局 从左到右
*
**/
public class TestFlowLayout {

    public static void main(String[] args) {

        Frame frame = new Frame();

        frame.setSize(300, 300);
        frame.setVisible(true);

        //创建Button按钮
        Button button1 = new Button("button1");
        Button button2 = new Button("button2");
        Button button3 = new Button("button3");
        Button button4 = new Button("button4");

        //设置流式布局 //FlowLayout()构造方法可以设置左偏移或者右
        frame.setLayout(new FlowLayout());

        //添加到Frame中
        frame.add(button1);
        frame.add(button2);
        frame.add(button3);
        frame.add(button4);


    }

}

东西南北中布局（BorderLayout）

package swing;

import java.awt.*;

/**
 * 东西南北中布局
 */
public class TestBorderLayout {

    public static void main(String[] args) {
        Frame frame = new Frame("TestBorderLayout");

        //创建Button按钮
        Button east = new Button("east");
        Button west = new Button("west");
        Button south = new Button("south");
        Button north = new Button("north");
        Button center = new Button("center");

        frame.add(east, BorderLayout.EAST);
        frame.add(west, BorderLayout.WEST);
        frame.add(south, BorderLayout.SOUTH);
        frame.add(north, BorderLayout.NORTH);
        frame.add(center, BorderLayout.CENTER);

        frame.setVisible(true);
        frame.setSize(300, 300);
    }
}

表格布局（GridLayout）

package swing;

import java.awt.*;

/**
 * 表格布局
 */
public class TestGridLayout {

    public static void main(String[] args) {

        Frame frame = new Frame("TestGridLayout");

        Button button1 = new Button("button1");
        Button button2 = new Button("button2");
        Button button3 = new Button("button3");
        Button button4 = new Button("button4");

        //设置表格布局，构造方法可以传入几行几列参数
        frame.setLayout(new GridLayout(2, 2));

        frame.add(button1);
        frame.add(button2);
        frame.add(button3);
        frame.add(button4);

        frame.setVisible(true);
        //frame.pack(); 自动配置大小
        frame.setSize(300, 300);

    }
}

按钮事件监听

package swing;

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

public class TestActionEvent {

    public static void main(String[] args) {

        Frame frame = new Frame();
        frame.setVisible(true);
        frame.setSize(300,300);
        Button button1 = new Button("button1");
        Button button2 = new Button("button2");
        frame.add(button1);

        //事件监听  第一种方式
        button1.addActionListener((ActionEvent e)->{
            System.out.println(11);
        });
        
        //第二种方式
        MyAction action = new MyAction();
        button2.addActionListener(action);
    }
}

class MyAction implements ActionListener {
    //事件执行的方法
    @Override
    public void actionPerformed(ActionEvent e) {
        
    }
}

输入框监听事件

package swing;

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

public class TestTextField {

    public static void main(String[] args) {
        //启动
        new MyFrame("文本框");

    }
}

/**
 * 继承Frame
 */
class MyFrame extends Frame {

    public MyFrame() {
    }

    public MyFrame(String title) {
        super(title);
        //创建文本框
        TextField field = new TextField();

        //监听文本框
        MyAction2 action = new MyAction2();
        //按下回车触发事件
        field.addActionListener(action);

        //设置替换编码
        field.setEchoChar('*');


        add(field);
        setVisible(true);
        pack();

    }

}

/**
 * 实现监听类的方法
 */
class MyAction2 implements ActionListener {

    @Override
    public void actionPerformed(ActionEvent e) {
        //获得资源强转
        TextField field = (TextField) e.getSource();
        //获得输出框的值
        String text = field.getText();
        System.out.println(text);
        //设置文本为空
        field.setText("");
    }
}

简单的加法计算器

package swing;

import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;

public class TestCalc {

    public static void main(String[] args) {
        new MyFrame3("计算器").start();
    }
}

class MyFrame3 extends Frame {

    public TextField num1;
    public TextField num2;
    public TextField num3;

    public MyFrame3(String title) {
        super(title);
    }

    public void start() {
        setVisible(true);
        //流式布局
        setLayout(new FlowLayout());
        num1 = new TextField(10);
        num2 = new TextField(10);
        num3 = new TextField(20);
        //标签
        Label label = new Label("+");
        Button button = new Button("=");
        add(num1);
        add(label);
        add(num2);
        add(button);
        add(num3);

        MyAction3 action = new MyAction3();
        button.addActionListener(action);

        pack();

        //关闭窗口事件
        addWindowListener(new WindowAdapter() {
            @Override
            public void windowClosing(WindowEvent e) {
                System.exit(0);
            }
        });


    }

    //内部类
    private class MyAction3 implements ActionListener {

        @Override
        public void actionPerformed(ActionEvent e) {

            double sum = Double.parseDouble(num1.getText()) + Double.parseDouble(num2.getText());
            num3.setText(sum + "");
            num1.setText("");
            num2.setText("");

        }
    }
}

画笔 Paint

package swing;

import java.awt.*;

public class TestPaint {

    public static void main(String[] args) {
        new MyPaint().start();
    }
}

class MyPaint extends Frame{

    public void start(){
        setVisible(true);
        setBounds(300,200,600,600);
    }

    @Override
    public void paint(Graphics g) {
        //需要颜色
        g.setColor(Color.red);
        //实心的圆
        g.fillOval(50,50,100,100);
    }
}

窗口Frame监听事件

package swing;

import java.awt.*;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;

public class TestWindow {

    public static void main(String[] args) {
        new MyFrame5().start();
    }
}

class MyFrame5 extends Frame {

    public void start() {
        setVisible(true);

        addWindowListener(new WindowAdapter() {
            @Override
            public void windowOpened(WindowEvent e) {
                //窗口打开事件
                System.out.println("窗口打开了");
            }

            @Override
            public void windowClosing(WindowEvent e) {
                super.windowClosing(e);
                //窗口关闭事件
                System.exit(0);
            }

            @Override
            public void windowClosed(WindowEvent e) {
                super.windowClosed(e);
                System.out.println("窗口正在关闭中");
            }

            @Override
            public void windowActivated(WindowEvent e) {
                super.windowActivated(e);
                //选中窗口事件
                System.out.println("已选中窗口");
            }
        });
    }
}

键盘监听事件

package swing;

import java.awt.*;
import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;

public class TestKeyListener {

    public static void main(String[] args) {
        new MyFrame6().start();
    }
}

class MyFrame6 extends Frame {

    public void start() {
        setVisible(true);

        //监听键盘事件，匿名内部类
        this.addKeyListener(new KeyAdapter() {
            @Override
            public void keyTyped(KeyEvent e) {
                super.keyTyped(e);
            }

            //键盘按下事件
            @Override
            public void keyPressed(KeyEvent e) {
                super.keyPressed(e);
                //获得键盘的哪个键
                int keyCode = e.getKeyCode();
                if (keyCode == KeyEvent.VK_UP) {
                    System.out.println("你按下了↑键");
                }
            }

            @Override
            public void keyReleased(KeyEvent e) {
                super.keyReleased(e);
            }
        });
    }


}

Swing

package swing;

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

public class TestJFrame {

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

    //初始化
    public static void into(){
        JFrame frame = new JFrame("标题");

        //大小
        frame.setBounds(200,200,300,300);

        //可见性
        frame.setVisible(true);

        //设置文字标签 JLabel
        JLabel label = new JLabel("文字标签");

        //设置字体居中
        label.setHorizontalAlignment(SwingConstants.CENTER);

        frame.add(label);

        //获得一个容器，只能给容器设置背景颜色并显示
        Container contentPane = frame.getContentPane();
        contentPane.setBackground(Color.BLUE);

        //关闭窗口事件
        frame.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
    }
}

Swing 中的弹窗 JDialog

package swing;

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

public class TestJDialog extends JFrame {

    public TestJDialog(String title){
        super(title);
        setVisible(true);
        //设置默认关闭窗口
        setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
        //获取窗口容器
        Container contentPane = getContentPane();
        //设置布局
        contentPane.setLayout(null);

        JButton button  = new JButton("点击出现一个弹窗");
        button.setBounds(30,30,200,50);

        //按钮事件
        button.addActionListener((actionEvent)->{
            new MyJDialog();
        });

        contentPane.add(button);
    }

    public static void main(String[] args) {
        new TestJDialog("弹窗");
    }
}
/**
 * 弹窗类
 */
class MyJDialog extends JDialog{
    public MyJDialog() {
        setVisible(true);
        setBounds(200,200,300,300);

        Container contentPane = getContentPane();
        contentPane.setLayout(null);

        contentPane.add(new JLabel("哈哈哈"));
    }
}

标签 JLabel

package swing;

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

/**
 * 使用画笔在标签上加上图片
 */
public class TestIcon extends JFrame implements Icon {

    private int width;
    private int height;

    public TestIcon() {
    }

    public TestIcon(int width, int height) {
        this.width = width;
        this.height = height;
    }

    public void init(){
        TestIcon testIcon = new TestIcon(15,15);
        JLabel label = new JLabel("标签", testIcon, SwingConstants.CENTER);

        Container contentPane = getContentPane();
        contentPane.add(label);
        this.setVisible(true);
        this.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
        this.setBounds(200,200,300,300);


    }

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

    @Override
    public void paintIcon(Component c, Graphics g, int x, int y) {
        g.fillOval(x, y, width, height);
    }

    @Override
    public int getIconWidth() {
        return width;
    }

    @Override
    public int getIconHeight() {
        return height;
    }
}

图片 ImageIcon

package swing;

import javax.swing.*;
import java.net.URL;

public class TestImageIcon extends JFrame {

    public TestImageIcon(){
        JLabel label = new JLabel("标签");
        URL url = TestImageIcon.class.getResource("sq.png");
        ImageIcon icon = new ImageIcon(url);
        this.setBounds(200,200,500,500);
        //插入图片
        label.setIcon(icon);
        //居中
        label.setHorizontalAlignment(SwingConstants.CENTER);

        this.setVisible(true);
        this.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);

        this.add(label);
    }

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

JScroll文本域（有滚动栏）

package swing;

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

public class TestJScroll extends JFrame {

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

    public TestJScroll(String title){
        super(title);

        this.setVisible(true);
        this.setBounds(200,200,300,300);
        this.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);

        //获取容器
        Container container = getContentPane();


        //创建文本域
        JTextArea textArea = new JTextArea(20,50);
        textArea.setText("这是一个文本域");

        //创建JScroll
        JScrollPane scrollPane = new JScrollPane(textArea);
        //添加到容器
        container.add(scrollPane);
    }
}

单选按钮 JRadioButton

package swing;

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

public class TestJRadioButton extends JFrame {

    public TestJRadioButton() {
        this.setVisible(true);
        this.setSize(500,500);
        this.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
        Container container = this.getContentPane();

        JRadioButton button1 = new JRadioButton("男");
        JRadioButton button2 = new JRadioButton("女");
        JRadioButton button3 = new JRadioButton("人妖");

        ButtonGroup group = new ButtonGroup();
        group.add(button1);
        group.add(button2);
        group.add(button3);


        container.add(button1,BorderLayout.CENTER);
        container.add(button2,BorderLayout.NORTH);
        container.add(button3,BorderLayout.SOUTH);

    }

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

复选按钮 JCheckBox

package swing;

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

public class TestJCheckBox extends JFrame {

    public TestJCheckBox() {
        this.setVisible(true);
        this.setSize(500,500);
        this.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
        Container container = this.getContentPane();

       //多选框
        JCheckBox box1 = new JCheckBox("多选1");
        JCheckBox box2 = new JCheckBox("多选2");
        JCheckBox box3 = new JCheckBox("多选3");


        container.add(box1,BorderLayout.CENTER);
        container.add(box2,BorderLayout.NORTH);
        container.add(box3,BorderLayout.SOUTH);

    }

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

下拉列表 JComboBox

package swing;

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

public class TestJComboBox extends JFrame {

    public TestJComboBox() {
        this.setVisible(true);
        this.setSize(150,100);
        this.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
        Container container = this.getContentPane();

       JComboBox box = new JComboBox();

       box.addItem("销量");
       box.addItem("人数");
       box.addItem("综合");
       box.addItem("店铺");

       container.add(box);

    }

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

列表框

package swing;

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

public class TestJComboBox extends JFrame {

    public TestJComboBox() {
        this.setVisible(true);
        this.setSize(300,300);
        this.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
        Container container = this.getContentPane();

        String[] str = {"1","2","3","5","8","9","7"};

        JList list = new JList(str);


       container.add(list);

    }

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