GUI

GUI编程

1.简介

2.AWT

  1. 1Awt介绍
    1. 包含了很多类和接口！ GUI！
    2. 元素：窗口，按钮，文本框
    3. Java.awt

image-20240120160254914

2.2组件和容器

Frame

package com.zzl.lesson1;

import java.awt.*;

//GUI的第一个界面
public class TestFrame {
    public static void main(String[] args) {
        //frame对象  看源码
        Frame frame = new Frame("我的第一个java图像窗口");
        //需要设置可见性
        frame.setVisible(true);
        //设置窗口大小
        frame.setSize(400,400);
        //设置背景颜色 Color
        frame.setBackground(new Color(0, 253, 45, 255));
        //弹出的初始位置
        frame.setLocation(500,500);
        //设置大小固定
        frame.setResizable(false);
    }
}

image-20240120162553794

问题无法关闭

利用封装完成

package com.zzl.lesson1;

import java.awt.*;

import static java.awt.Color.*;

public class TestFrame2 {
    //展示多个窗口
    public static void main(String[] args) {
        MyFrame myFrame = new MyFrame(100, 100, 200, 200, blue);
        MyFrame myFrame1 = new MyFrame(100, 300, 200, 200, red);
        MyFrame myFrame2 = new MyFrame(300, 100, 200, 200, black);
        MyFrame myFrame3 = new MyFrame(300, 300, 200, 200, yellow);
    }

}
class MyFrame extends Frame{
    static int id = 0;//可能存在多个窗口，我们需要一个计算器
    public MyFrame(int x,int y,int w,int h,Color color){
        super("MyFrame"+(++id));
        setBackground(color);
        setBounds(x,y,w,h);
        setVisible(true);


    }

}

image-20240120164230587

panel

//解决窗口关闭的问题

package com.zzl.lesson1;

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

//panel可以看成一个空间
public class TestPane1 {
    public static void main(String[] args) {
        Frame frame = new Frame();
        //布局的概念
        Panel panel = new Panel();
        //设置布局
        frame.setLayout(null);
        //坐标
        frame.setBounds(300,300,500,500);
        frame.setBackground(new Color(0x007B02));
        //panel设置坐标，相对于frame
        panel.setBounds(40,40,300,300);
        panel.setBackground(new Color(0x852F2F));
        //frame.add(panel)
        frame.add(panel);
        frame.setVisible(true);
        //监听事件，监听窗口关闭事件，System。exit（0）
        //适配器模式：
        //利用继承的关系
        frame.addWindowListener(new WindowAdapter() {
            //窗口点击关闭的时候需要做的事情
            @Override
            public void windowClosing(WindowEvent e) {
                //结束程序
                System.exit(0);
            }
        });
    }
}

3布局管理

流式布局

package com.zzl.lesson1;

import java.awt.*;

public class TestFlowLayout {
    public static void main(String[] args) {
        Frame frame = new Frame();
        //组件——按钮
        Button button1 = new Button("button1");
        Button button2 = new Button("button2");
        Button button3 = new Button("button3");
        //frame.setLayout(new FlowLayout());
        frame.setLayout(new FlowLayout(FlowLayout.LEFT));
        frame.setSize(200,200);
        frame.setVisible(true);
        frame.add(button1);
        frame.add(button2);
        frame.add(button3);
    }
}

东西南北中

package com.zzl.lesson1;

import java.awt.*;

public class TestBorderLayout {
    public static void main(String[] args) {
        Frame frame = new Frame("TestBorderLayout");
        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(200,200);


    }
}

表格布局

package com.zzl.lesson1;

import java.awt.*;

public class TestGridLayout {
    public static void main(String[] args) {
        Frame frame = new Frame("TestBorderLayout");
        Button btn1 = new Button("btn1");
        Button btn2 = new Button("btn2");
        Button btn3 = new Button("btn3");
        Button btn4 = new Button("btn4");
        Button btn5 = new Button("btn5");
        Button btn6 = new Button("btn6");

        frame.setLayout(new GridLayout(3,2));

        frame.add(btn1);
        frame.add(btn2);
        frame.add(btn3);
        frame.add(btn4);
        frame.add(btn5);
        frame.add(btn6);
        
        frame.setVisible(true);
        frame.setSize(300,300);


    }

}

作业

自己版

package com.zzl.lesson1;

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

public class Test{
    public static void main(String[] args) {
        Frame frame = new Frame();
        Panel panel1 = new Panel();
        Panel panel2 = new Panel();
        Panel panel3 = new Panel();
        Panel panel5 = new Panel();
        Panel panel6 = new Panel();
        frame.setBounds(300,300,400,400);
        panel1.setBounds(0,0,100,400);
        panel2.setBounds(100,0,200,200);
        panel3.setBounds(300,0,100,400);
        panel5.setBounds(100,200,200,200);
        panel6.setBounds(100,200,200,200);
        Button btn1 = new Button("btn1");
        Button btn2 = new Button("btn2");
        Button btn3 = new Button("btn3");
        Button btn4 = new Button("btn4");
        Button btn5 = new Button("btn5");
        Button btn6 = new Button("btn6");
        Button btn7 = new Button("btn7");
        Button btn8 = new Button("btn8");
        Button btn9 = new Button("btn9");
        Button btn10 = new Button("btn10");

        panel1.setLayout(new GridLayout(2,1));
        panel2.setLayout(new GridLayout(2,1));
        panel3.setLayout(new GridLayout(2,1));
        panel5.setLayout(new GridLayout(2,2));




        panel1.add(btn1);
        panel1.add(btn2);
        panel2.add(btn3);
        panel2.add(btn4);
        panel5.add(btn5);
        panel5.add(btn6);
        panel5.add(btn7);
        panel5.add(btn8);
        panel3.add(btn9);
        panel3.add(btn10);
        frame.add(panel1);
        frame.add(panel2);
        frame.add(panel3);
        frame.add(panel5);
        frame.add(panel6);
        panel1.setBackground(new Color(0x852F2F));
        panel2.setBackground(new Color(0x4C852F));
        panel3.setBackground(new Color(0x2F6785));
        panel5.setBackground(new Color(0x272128));

        frame.setVisible(true);
        frame.setResizable(false);
        //监听事件，监听窗口关闭事件，System。exit（0）
        //适配器模式：
        //利用继承的关系
        frame.addWindowListener(new WindowAdapter() {
            //窗口点击关闭的时候需要做的事情
            @Override
            public void windowClosing(WindowEvent e) {
                //结束程序
                System.exit(0);
            }
        });
    }
}

image-20240123124551849

答案

package com.zzl.lesson1;

import java.awt.*;

public class Testdaan {
    public static void main(String[] args) {
        //总的Frame
        Frame frame = new Frame();
        frame.setSize(400,400);
        frame.setLocation(400,400);
        frame.setBackground(Color.BLACK);
        frame.setVisible(true);
        frame.setLayout(new GridLayout(2,1));
        //4个面板
        Panel p1 = new Panel(new BorderLayout());
        Panel p2 = new Panel(new GridLayout(2,1));
        Panel p3 = new Panel(new BorderLayout());
        Panel p4 = new Panel(new GridLayout(2,2));
        //上半部分
        p1.add(new Button("East-1"),BorderLayout.EAST);
        p1.add(new Button("West-1"),BorderLayout.WEST);
        p2.add(new Button("p2"));
        p2.add(new Button("p2"));
        p1.add(p2,BorderLayout.CENTER);
        //下面
        p3.add(new Button("East-2"),BorderLayout.EAST);
        p3.add(new Button("West-2"),BorderLayout.WEST);
        for (int i = 0; i < 4; i++) {
            p4.add(new Button("for-"+i));

        }
        p3.add(p4,BorderLayout.CENTER);
        frame.add(p1);
        frame.add(p3);

    }
}

布局管理器总结

  1. Frame是一个顶级窗口
  2. Panel无法单独显示，必须添加到某个容器中
  3. 布局管理器：流式，东西南北中，表格
  4. 大小定位背景颜色可见性监听

事件监听

package com.zzl.lesson1;

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 TestActionEvent {
    public static void main(String[] args) {
        Frame frame = new Frame();
        Button button = new Button();
        MyActionListener myActionListener = new MyActionListener();
        button.addActionListener(myActionListener);
        frame.add(button,BorderLayout.CENTER);
        frame.pack();
        frame.setVisible(true);
        windowClose(frame);
        

    }
    //关闭窗口
    private static void windowClose(Frame frame){
        frame.addWindowListener(new WindowAdapter() {
            @Override
            public void windowClosing(WindowEvent e) {
                System.exit(0);
            }
        });
    }
}
//事件监听
class MyActionListener implements ActionListener{

    @Override
    public void actionPerformed(ActionEvent e) {
        System.out.println("aaa");

    }
}

多个按钮共享一个事件

package com.zzl.lesson1;

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

public class TestActionTwo {
    public static void main(String[] args) {
        //两个按钮实现一个监听

        Frame frame = new Frame("开始-停止");
        Button button2 = new Button("stop");
        Button button1 = new Button("start");
        //可以显示的定义触发会返回的命令，如果不显示定义，则会返回默认值
        button2.setActionCommand("button2-stop");


        MyMonitor myMonitor = new MyMonitor();

        button1.addActionListener(myMonitor);
        button2.addActionListener(myMonitor);
        frame.add(button1,BorderLayout.WEST);
        frame.add(button2,BorderLayout.EAST);
        frame.pack();
        frame.setVisible(true);

    }
}
class MyMonitor implements ActionListener{

    @Override
    public void actionPerformed(ActionEvent e) {
        System.out.println(("按钮被按下"+e.getActionCommand()));
    }
}

计算器

oop原则：组合大于继承

posted on 2024-01-23 21:45  大聪明小周  阅读(36)  评论(0)    收藏  举报

导航