jframe的简单用法

曾经终败给现在 2023-06-08 04:59 13阅读 0赞

![jframe][]

import java.awt.Color;
    
    import java.io.BufferedReader;
    
    import java.io.IOException;
    
    import java.io.InputStreamReader;
    
     
    
    import javax.swing.JFrame;
    
     
    
    public class MyFrame {
    
     
    
    	public static void main(String[] args) {
    
    		JFrame frame = new JFrame("我的第一个Frame");//标题
    
    		frame.setSize(500 , 1000);//宽和高
    
    		frame.getContentPane().setBackground(Color.RED);//颜色
    
    		frame.setVisible(true);
    
    		
    
    		BufferedReader intemp = new BufferedReader(new InputStreamReader(System.in));
    
    		System.out.println("Press return key to exit.");
    
    		try{
    
    			String s = intemp.readLine();
    
    		} catch(IOException e){
    
    			System.out.println("IOException");
    
    		}
    
    		
    
    		System.exit(0);//退出
    
    		
    
    	
    
    	}//main 结束
    
     
    
    }

![1][]

import java.awt.Color;
    
    import java.io.BufferedReader;
    
    import java.io.IOException;
    
    import java.io.InputStreamReader;
    
     
    
    import javax.swing.JFrame;
    
    import javax.swing.JPanel;
    
     
    
    public class FrameWithPanelTest {
    
     
    
    	public static void main(String[] args) {
    
    		JFrame frame = new JFrame("My Frame");
    
    		frame.setSize(500 , 500);
    
    		frame.getContentPane().setBackground(Color.BLACK);
    
    		frame.setVisible(true);
    
    		
    
    		JPanel contentPane = new JPanel();
    
    		contentPane.setSize(100 , 100);
    
    		contentPane.setBackground(Color.yellow);
    
    		frame.add(contentPane);
    
    		frame.setLayout(null); //不加上这一句设置布局，contentPanel会铺满整个frame
    
    		
    
    		BufferedReader intemp = new BufferedReader(new InputStreamReader(System.in));
    
    		System.out.println("Press return key to exit.");
    
    		try{
    
    			String s = intemp.readLine();
    
    		} catch(IOException e){
    
    			System.out.println("IOException");
    
    		}
    
    		System.exit(0);
    
    		
    
    		
    
    		
    
    	}
    
     
    
    }

![2][]

package classroom;
    //public class Thread extends Object implements Runnable
    
    
    
    import java.awt.Color;
    
    import java.awt.FlowLayout;
    
    import java.io.BufferedReader;
    
    import java.io.IOException;
    
    import java.io.InputStreamReader;
    
     
    
    import javax.swing.JButton;
    
    import javax.swing.JFrame;
    
    import javax.swing.JPanel;
    
     
    
    public class FrameWithPanelTest {
    
     
    
    	public static void main(String[] args) {
    
    		JFrame frame = new JFrame("My Frame");
    
    		frame.setSize(500 , 500);
    
    		frame.getContentPane().setBackground(Color.BLACK);
    
    		frame.setLayout(new FlowLayout(FlowLayout.CENTER , 50 , 50)); //为JFrame顶层容器设置FlowLayout布局管理器
    
    		
    
    		
    
    		JPanel contentPane = new JPanel();
    
    		contentPane.setSize(100 , 100);
    
    		//内部按钮对齐方式，水平和垂直间距
    
    		contentPane.setLayout(new FlowLayout(FlowLayout.CENTER , 50 , 50)); //为Japnel设置布局管理器
    
    		contentPane.setBackground(Color.yellow);
    
     
    
    		JButton btn1 , btn2 , btn3 ; //定义3个按钮
    
    		btn1 = new JButton("打开");
    
    		btn2 = new JButton("关闭");
    
    		btn3 = new JButton("返回");
    
    		contentPane.add(btn1);
    
    		contentPane.add(btn2);
    
    		contentPane.add(btn3);
    
    		
    
    		frame.add(contentPane);
    
    		frame.setVisible(true); //显示JFrame
    
    		
    
    		
    
    		BufferedReader intemp = new BufferedReader(new InputStreamReader(System.in));
    
    		System.out.println("Press return key to exit.");
    
    		try{
    
    			String s = intemp.readLine();
    
    		} catch(IOException e){
    
    			System.out.println("IOException");
    
    		}
    
    		System.exit(0);
    
    		
    
    		
    
    		
    
    	}
    
     
    
    }

![3][]

package classroom;
    //public class Thread extends Object implements Runnable
    
    
    
    
    import java.awt.BorderLayout;
    
    import java.awt.Container;
    
    import java.awt.event.KeyEvent;
    
    import java.awt.event.KeyListener;
    
    import java.awt.event.MouseEvent;
    
    import java.awt.event.MouseMotionListener;
    
     
    
    import javax.swing.JFrame;
    
    import javax.swing.JLabel;
    
     
    
    //鼠标及按键
    
    public class MouseControl implements MouseMotionListener , KeyListener{
    
    	private JFrame frame;
    
    	private JLabel tf;
    
    	String ch = ""; //放置待显示的字符
    
    	
    
    	public static void main(String[] args){
    
    		MouseControl two = new MouseControl();
    
    		two.go();
    
    	}
    
    	
    
    	
    
    	private void go() {
    
    		frame = new JFrame("鼠标按键测试");
    
    		Container contentPane = frame.getContentPane();
    
    		contentPane.add(new JLabel("get mouse and keyboard event") , BorderLayout.NORTH);
    
    		tf = new JLabel();
    
    		contentPane.add(tf, BorderLayout.SOUTH);
    
    		//注册监听程序
    
    		frame.addMouseMotionListener(this);
    
    		frame.addKeyListener(this);
    
    		
    
    		frame.setSize(300 , 300);
    
    		frame.setVisible(true);
    
    		
    
    	}
    
     
    
     
    
    	//接下来为实现接口中的方法
    
    	@Override
    
    	public void keyTyped(KeyEvent e) { //顺序 keypress keytype keyrelease
    
    		// TODO Auto-generated method stub
    
    		System.out.println("2");
    
    		int charcode = e.getKeyCode();
    
    		ch = "有键按下2";
    
    		if(charcode == KeyEvent.VK_SHIFT) {ch = "shift2";}
    
    		if(charcode == KeyEvent.VK_CONTROL) ch = "control2";
    
    	}
    
     
    
    	@Override
    
    	public void keyPressed(KeyEvent e) { //看不到显示，因为keytype覆盖了
    
    		// TODO Auto-generated method stub
    
    		System.out.println("1");
    
    		int charcode = e.getKeyCode();
    
    		ch = "有键按下1";
    
    		if(charcode == KeyEvent.VK_SHIFT) ch = "shift1";
    
    		if(charcode == KeyEvent.VK_CONTROL) ch = "control1";
    
    	}
    
     
    
    	@Override
    
    	public void keyReleased(KeyEvent e) {
    
    		// TODO Auto-generated method stub
    
    		//ch = "有键松开";
    
    		System.out.println("3");
    
    	}
    
     
    
    	@Override
    
    	public void mouseDragged(MouseEvent e) { //按住鼠标拖动才会调用
    
    		// TODO Auto-generated method stub
    
    		String s = "鼠标拖动的坐标: X =" +e.getX() + " Y =" + e.getY() + " KEY：" + ch;
    
    		tf.setText(s);
    
    	}
    
     
    
    	@Override
    
    	public void mouseMoved(MouseEvent e) {
    
    		// TODO Auto-generated method stub
    
    		String s = "鼠标移动时的坐标: X =" +e.getX() + " Y =" + e.getY() + " KEY：" + ch;
    
    		tf.setText(s);
    
    	}
    
    	
    
    }

![4][]

[jframe]: /images/20230531/944c2dcd6f9c4040980f00ae16f4bf9e.png
[1]: /images/20230531/49fc500e2d2f4cfc8c183463a7ec9a0c.png
[2]: /images/20230531/666ce2599e2f43d2a39b4b1714dbc666.png
[3]: /images/20230531/5b22c14ad5534eb9b4b38190d7c07a21.png
[4]: /images/20230531/9629d728958549cc87a64b983d444fe1.png