jframe的简单用法

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

 

}

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);

		

		

		

	}

 

}

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);

		

		

		

	}

 

}

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);

	}

	

}