GUI

GUI

Swing

窗口

用Swing写的窗口自带隐藏窗口

点击关闭不会关闭窗口,会让窗口隐藏

package com.yu.lesson04;

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

public class JframeDemo {
    //init();初始化
    public void init(){
        JFrame jframe = new JFrame("这是一个JFrame窗口");
        jframe.setVisible(true);
        jframe.setBounds(100,100,200,200);
        jframe.setBackground(Color.BLACK);
        JLabel jLabel = new JLabel("欢迎来到我的世界");
        jframe.add(jLabel);
        //关闭事件
        jframe.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
    }
    public static void main(String[] args) {
        //建立一个窗口
        new JframeDemo().init();
    }
}

标签文字居中

package com.yu.lesson04;

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

public class JframeDemo02 {
    public static void main(String[] args) {
        new Myframe().init();
    }
}
class Myframe extends JFrame{
    public void init(){
        //获得容器
        Container contentPane = this.getContentPane();
        contentPane.setBackground(Color.GREEN);
        this.setVisible(true);
        this.setBounds(100,100,200,200);
        JLabel jLabel = new JLabel("欢迎来到我的世界");
        this.add(jLabel);
        //文本居中
         			       jLabel.setHorizontalAlignment(SwingConstants.CENTER);
    }
}

JDialog 弹窗

JDialog,用来被弹出,默认就有关闭事件!

package com.yu.lesson04;

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

//主窗口
public class DialogDemo extends JFrame {
    public DialogDemo(){
        this.setVisible(true);
        this.setBounds(100,200,300,400);
        this.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
        //JFrame 放东西,容器
        Container contentPane = this.getContentPane();
        //绝对布局
        contentPane.setLayout(null);
        //按钮
        JButton jButton = new JButton("点击弹窗对话框");
        jButton.setBounds(30,30,200,50);
        //点击这个按钮填出一个弹窗
        jButton.addActionListener(new ActionListener() {
            //监听器
            @Override
            public void actionPerformed(ActionEvent e) {
                //弹窗
                new MyDialogDemo();
            }
        });
        contentPane.add(jButton);
    }
    public static void main(String[] args) {
        new DialogDemo();
    }
}
//弹窗的窗口
class MyDialogDemo extends JDialog{
    public MyDialogDemo(){
        this.setVisible(true);
        this.setBounds(100,100,500,500);
        Container contentPane = this.getContentPane();
        contentPane.setLayout(null);
        contentPane.add(new Label("Java Swing 图形化"));

    }
}

标签

label

new Label("XXXX");
new JLabel("XXXX");

图标 ICON

package com.yu.lesson04;

import javax.swing.*;
import java.awt.*;
//图标是一个接口需要实现类,Frame继承
public class IconDemo extends JFrame implements Icon {
    private int width;
    private int heigth;
    public IconDemo(){}//无参构造
    public IconDemo(int width,int heigth){
        this.heigth = heigth;
        this.width = width;
    }

    public void init(){
        IconDemo iconDemo = new IconDemo(15, 15);
        //图标放在标签上,也可以放在按钮上!
        JLabel JLabel = new JLabel("icontest", iconDemo, SwingConstants.CENTER);
        Container contentPane = getContentPane();
        contentPane.add(JLabel);
        this.setBounds(100,100,500,500);
        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,heigth);
    }

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

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

图片图标 picture icon

package com.yu.lesson04;

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

public class ImageIconDemo extends JFrame {
    public ImageIconDemo(){
        //获取图片地址
        JLabel jLabel = new JLabel("ImageIcon");
        URL url = ImageIconDemo.class.getResource("mn.jpg");

        ImageIcon imageIcon = new ImageIcon(url);//注意命名不要冲突,自己的和官方的
        jLabel.setIcon(imageIcon);
        jLabel.setHorizontalAlignment(SwingConstants.CENTER);
        Container contentPane = getContentPane();
        contentPane.add(jLabel);
        setVisible(true);
        setDefaultCloseOperation(WindowConstants.DISPOSE_ON_CLOSE);
        setBounds(100,100,200,200);
    }
    public static void main(String[] args) {
        new ImageIconDemo();
    }
}

面板

按钮

• 单选按钮
• 复选按钮

列表

文本框

密码框

文本域

文本框

也属于烂尾了吧有机会补充完整