GUI编程续

1.Swing

1.1、窗口，面板

package com.tian.lesson04;

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

public class JFrameDemo02 {
    public static void main(String[] args) {
        new MyJframe2().init();
    }
}
class MyJframe2 extends JFrame {
    public void init(){
        this.setBounds(10,10,200,300);
        this.setVisible(true);
        JLabel label = new JLabel("欢迎来到狂神说java系列节目");
        this.add(label);
        //让文本标签居中
        label.setHorizontalAlignment(SwingConstants.CENTER);
        //获得容器
        Container container = this.getContentPane();
        container.setBackground(Color.YELLOW);
    }
}

package com.tian.lesson04;

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

public class JFrameDemo {
    //init();初始化
    public void init(){
        //顶级窗口
        JFrame jf = new JFrame("这是一个JFrame窗口");
        jf.setVisible(true);
        jf.setBounds(100,100,200,200);
        jf.setBackground(Color.cyan);
        //设置文字JLabel
        JLabel label = new JLabel("欢迎来到狂神说java系列节目");
        jf.add(label);

        //关闭事件
        jf.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
    }
    public static void main(String[] args) {
        //建立一个窗口
        new JFrameDemo().init();
    }
}

1.2、弹窗

JDialog，用来被弹出，默认就有关闭事件！

package com.tian.lesson04;

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

//主窗口
public class DialoDemo extends JFrame {
    public DialoDemo(){
        this.setVisible(true);
        this.setSize(700,500);
        this.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
        //JFrame 放东西，容器
        Container container = this.getContentPane();
        //绝对布局
        container.setLayout(null);
        //按钮
        JButton button = new JButton("点击弹出一个对话框");//创建
        button.setBounds(30,30,200,50);
        //点击这个按钮的时候，弹出一个弹窗
        button.addActionListener(new ActionListener() {//监听器
            @Override
            public void actionPerformed(ActionEvent e) {
                //弹窗
                new MyDialogDemo();
            }
        });
        container.add(button);
    }

    public static void main(String[] args) {
        new DialoDemo();
    }
}
//弹窗的窗口
class MyDialogDemo extends JDialog{
    public MyDialogDemo() {
        this.setVisible(true);
        this.setBounds(100,100,500,500);
        //this.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
        Container container = this.getContentPane();
        container.setLayout(null);
        container.add(new Label("秦老师带你学java"));
    }
}

1.3、标签

label

new JLabel("xxx");

图标ICON

package com.tian.lesson04;

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

//图标，需要实现类，Frame继承
public class IconDemo extends JFrame implements Icon {
    private int width;
    private int height;
    public IconDemo(){}//无参构造
    public IconDemo(int width,int height){
        this.width = width;
        this.height = height;
    }

    public void init(){
        IconDemo iconDemo = new IconDemo(15,15);
        //图标放在标签，也可以放在按钮上！
        JLabel label = new JLabel("icontest", iconDemo, SwingConstants.CENTER);
        Container container = getContentPane();
        container.add(label);
        this.setVisible(true);
        this.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
    }

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

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

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

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

图片Icon

package com.tian.lesson04;

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

public class ImageIconDemo extends JFrame {
    public ImageIconDemo(){
        //获取图片的地址
        JLabel label = new JLabel("ImageIcon");
        URL url = ImageIconDemo.class.getResource("tx.jpg");

        ImageIcon imageIcon = new ImageIcon(url);//命名不要冲突了
        label.setIcon(imageIcon);
        label.setHorizontalAlignment(SwingConstants.CENTER);

        Container container = getContentPane();
        container.add(label);

        setVisible(true);
        setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
        setBounds(100,100,200,200);
    }

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

    }
}

1.4、面板

JPanel

package com.tian.lesson05;

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

public class JPanelDemo extends JFrame {
    public JPanelDemo(){
        Container container = this.getContentPane();
        container.setLayout(new GridLayout(2,1,10,10));//后面参数的意思是间距！
        JPanel panel1 = new JPanel(new GridLayout(1,3));
        JPanel panel2 = new JPanel(new GridLayout(1,2));
        JPanel panel3 = new JPanel(new GridLayout(2,1));
        JPanel panel4 = new JPanel(new GridLayout(3,2));
        panel1.add(new JButton("1"));
        panel1.add(new JButton("1"));
        panel1.add(new JButton("1"));
        panel2.add(new JButton("2"));
        panel2.add(new JButton("2"));
        panel3.add(new JButton("3"));
        panel3.add(new JButton("3"));
        panel4.add(new JButton("4"));
        panel4.add(new JButton("4"));
        panel4.add(new JButton("4"));
        panel4.add(new JButton("4"));
        panel4.add(new JButton("4"));
        panel4.add(new JButton("4"));

        container.add(panel1);
        container.add(panel2);
        container.add(panel3);
        container.add(panel4);

        this.setVisible(true);
        this.setSize(500,500);
        this.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);

    }

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

JScrollPanel

package com.tian.lesson05;

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

public class JScrollDemo extends JFrame {
    public JScrollDemo(){
        Container container = this.getContentPane();
        //文本域
        JTextArea textArea = new JTextArea(20, 50);
        textArea.setText("欢迎学习狂神说java");
        //Scroll面板
        JScrollPane scrollPane = new JScrollPane(textArea);
        container.add(scrollPane);
        
        this.setVisible(true);
        this.setBounds(100,100,300,350);
        this.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);

    }

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

1.5、按钮

图片按钮

package com.tian.lesson05;

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

public class JButtonDemo01 extends JFrame {

    public JButtonDemo01() {
        Container container = this.getContentPane();
        //将一个图片变为图标
        URL resource = JButtonDemo01.class.getResource("tx.jpg");
        Icon icon = new ImageIcon(resource);
        //把这个图标放在按钮上
        JButton button = new JButton();
        button.setIcon(icon);
        button.setToolTipText("图片按钮");
        //add
        container.add(button);
        this.setVisible(true);
        this.setSize(500,300);
        this.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);

    }

    public static void main(String[] args) {
        new JButtonDemo01();
    }
}

单选按钮

package com.tian.lesson05;

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

public class JButtonDemo02 extends JFrame {

    public JButtonDemo02() {
        Container container = this.getContentPane();
        //将一个图片变为图标
        URL resource = JButtonDemo01.class.getResource("tx.jpg");
        Icon icon = new ImageIcon(resource);
        //单选框
        JRadioButton radioButton01 = new JRadioButton("JRadioButton01");
        JRadioButton radioButton02 = new JRadioButton("JRadioButton02");
        JRadioButton radioButton03 = new JRadioButton("JRadioButton03");
        //由于单选框只能选择一个，所以分组
        ButtonGroup group = new ButtonGroup();
        group.add(radioButton01);
        group.add(radioButton02);
        group.add(radioButton03);

        container.add(radioButton01,BorderLayout.CENTER);
        container.add(radioButton02,BorderLayout.NORTH);
        container.add(radioButton03,BorderLayout.SOUTH);

        this.setVisible(true);
        this.setSize(500,300);
        this.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);

    }

    public static void main(String[] args) {
        new JButtonDemo02();
    }
}

复选按钮

package com.tian.lesson05;

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

public class JButtonDemo03 extends JFrame {

    public JButtonDemo03() {
        Container container = this.getContentPane();
        //将一个图片变为图标
        URL resource = JButtonDemo01.class.getResource("tx.jpg");
        Icon icon = new ImageIcon(resource);
        //多选框
        JCheckBox checkBox01 = new JCheckBox("JCheckBox01");
        JCheckBox checkBox02 = new JCheckBox("JCheckBox02");

        container.add(checkBox01,BorderLayout.NORTH);
        container.add(checkBox02,BorderLayout.SOUTH);


        this.setVisible(true);
        this.setSize(500,300);
        this.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);

    }

    public static void main(String[] args) {
        new JButtonDemo03();
    }
}

1.6、列表

下拉框

package com.tian.lesson06;

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

public class TestComboboxDemo01 extends JFrame {
    public TestComboboxDemo01(){
        Container container = this.getContentPane();
        
        JComboBox status = new JComboBox();

        status.addItem(null);
        status.addItem("正在热映");
        status.addItem("已下架");
        status.addItem("即将下架");

        container.add(status);


        this.setVisible(true);
        this.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
        this.setSize(500,350);
    }

    public static void main(String[] args) {
        new TestComboboxDemo01();
    }
}

列表框

package com.tian.lesson06;

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

public class TestComboboxDemo02 extends JFrame {
    public TestComboboxDemo02(){
        Container container = this.getContentPane();

        //生成列表的内容
        String[] contents = {"1","2","3"};
        //列表中需要放入内容
        JList jList = new JList(contents);

        container.add(jList);

        this.setVisible(true);
        this.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
        this.setSize(500,350);
    }

    public static void main(String[] args) {
        new TestComboboxDemo02();
    }
}

应用场景
- 选择地区，或者一些单个选项
- 列表，展示信息，一般是动态扩容！

1.7、文本框

文本框

package com.tian.lesson06;

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

public class TestTextDemo01 extends JFrame {
    public TestTextDemo01(){
        Container container = this.getContentPane();

        JTextField textField = new JTextField("hello");
        JTextField textField2 = new JTextField("world",20);

        container.add(textField,BorderLayout.NORTH);
        container.add(textField2,BorderLayout.SOUTH);

        this.setVisible(true);
        this.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
        this.setSize(500,350);
    }

    public static void main(String[] args) {
        new TestTextDemo01();
    }
}

密码框

package com.tian.lesson06;

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

public class TestTextDemo02 extends JFrame {
    public TestTextDemo02(){
        Container container = this.getContentPane();

        JPasswordField passwordField = new JPasswordField();//****
        passwordField.setEchoChar('*');

        container.add(passwordField);

        this.setVisible(true);
        this.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
        this.setSize(500,350);
    }

    public static void main(String[] args) {
        new TestTextDemo02();
    }
}

文本域

package com.tian.lesson05;

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

public class JScrollDemo extends JFrame {
    public JScrollDemo(){
        Container container = this.getContentPane();
        //文本域
        JTextArea textArea = new JTextArea(20, 50);
        textArea.setText("欢迎学习狂神说java");
        //Scroll面板
        JScrollPane scrollPane = new JScrollPane(textArea);
        container.add(scrollPane);
        
        this.setVisible(true);
        this.setBounds(100,100,300,350);
        this.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);

    }

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

posted @ 2025-07-23 19:59 A那就算了吧阅读(4) 评论(0) 收藏举报

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ths-java

GUI编程续

1.Swing

1.1、窗口，面板

1.2、弹窗

1.3、标签

1.4、面板

1.5、按钮

1.6、列表

1.7、文本框

公告

ths-java

GUI编程 续

1.Swing

1.1、窗口，面板

1.2、弹窗

1.3、标签

1.4、面板

1.5、按钮

1.6、列表

1.7、文本框

公告

GUI编程续