[JAVA] Key 이벤트 프로그래밍

Key 이벤트

import java.awt.Color;
import java.awt.Container;
import java.awt.FlowLayout;
import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;

import javax.swing.JFrame;
import javax.swing.JLabel;

public class KeyEventEx extends JFrame{
	JLabel []keyMsg = new JLabel[3];
	KeyEventEx(){
		setTitle("KeyEvent");
		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		Container c = getContentPane();
		c.setLayout(new FlowLayout());
		String[] names = {"getKeyCode()","getKeyChar()","getKeyText()"};
		
		for(int i=0; i<keyMsg.length; i++) {
			keyMsg[i] = new JLabel(names[i]);
			keyMsg[i].setOpaque(true);
			keyMsg[i].setBackground(Color.YELLOW);
			c.add(keyMsg[i]);
		}
		
		c.addKeyListener(new MyKeyListener());
		
		setSize(300,300);
		setVisible(true);
		
		c.setFocusable(true);
		c.requestFocus();
	}
	
	class MyKeyListener extends KeyAdapter{

		@Override
		public void keyPressed(KeyEvent e) {
			int code = e.getKeyCode();
			char ch = e.getKeyChar();
			String text = e.getKeyText(code);
			
			keyMsg[0].setText(Integer.toString(code));
			keyMsg[1].setText(Character.toString(ch));
			keyMsg[2].setText(text);
		}
		
	}
	
	public static void main(String[] args) {
		new KeyEventEx();
	}
}

import java.awt.Color;
import java.awt.Container;
import java.awt.FlowLayout;
import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;

import javax.swing.JFrame;
import javax.swing.JLabel;

public class KeyEventEx extends JFrame{
	JLabel []keyMsg = new JLabel[3];
	JLabel colorla = new JLabel("color");
	KeyEventEx(){
		setTitle("KeyEvent");
		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		Container c = getContentPane();
		c.setLayout(new FlowLayout());
		String[] names = {"getKeyCode()","getKeyChar()","getKeyText()"};
				
		for(int i=0; i<keyMsg.length; i++) {
			keyMsg[i] = new JLabel(names[i]);
			keyMsg[i].setOpaque(true);
			keyMsg[i].setBackground(Color.YELLOW);
			c.add(keyMsg[i]);
		}
		
		c.addKeyListener(new MyKeyListener());
		
		setSize(300,300);
		setVisible(true);
		
		c.setFocusable(true);
		c.requestFocus();
	}
	
	class MyKeyListener extends KeyAdapter{
		@Override
		public void keyPressed(KeyEvent e) {
			int code = e.getKeyCode();
			char ch = e.getKeyChar();
			String text = e.getKeyText(code);
			Container c = getContentPane();

			keyMsg[0].setText(Integer.toString(code));
			keyMsg[1].setText(Character.toString(ch));
			keyMsg[2].setText(text);
			
			if(ch == '%') {
				colorla.setText("%");
				c.setBackground(Color.YELLOW);
			}
			else if(text.equals("F1")) {
				colorla.setText("F1");
				c.setBackground(Color.GREEN);
			}
		}
	}
	
	public static void main(String[] args) {
		new KeyEventEx();
	}
}

마우스 모션 이벤트

import java.awt.Color;
import java.awt.Container;
import java.awt.FlowLayout;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;

import javax.swing.JFrame;
import javax.swing.JLabel;

public class MouseMotionEx extends JFrame{
	JLabel la = new JLabel("No mouse event");
	MouseMotionEx(){
		setTitle("MouseMotionEx");
		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		Container c = getContentPane();
		c.setLayout(new FlowLayout());
		c.add(la);
		MyMouseListener l = new MyMouseListener();
		c.addMouseListener(l);
		c.addMouseMotionListener(l);
		
		setSize(300,300);
		setVisible(true);
	}
	
	class MyMouseListener extends MouseAdapter{
		@Override
		public void mouseDragged(MouseEvent e) {
			la.setText("Mouse Dragged("+e.getX()+", "+e.getY()+")");
		}
		
		@Override
		public void mouseMoved(MouseEvent e) {
			la.setText("Mouse Moved("+e.getX()+", "+e.getY()+")");
		}
		
		@Override
		public void mouseEntered(MouseEvent e) {
			la.setText("Mouse Entered("+e.getX()+", "+e.getY()+")");
			Container c = (Container)e.getSource();
			c.setBackground(Color.CYAN);
		}

		@Override
		public void mouseExited(MouseEvent e) {
			la.setText("Mouse Exited("+e.getX()+", "+e.getY()+")");
			Container c = (Container)e.getSource();
			c.setBackground(Color.ORANGE);
		}

		@Override
		public void mousePressed(MouseEvent e) {
			la.setText("Mouse Pressed("+e.getX()+", "+e.getY()+")");
		}

		@Override
		public void mouseReleased(MouseEvent e) {
			la.setText("Mouse Released("+e.getX()+", "+e.getY()+")");
		}
	}
	
	public static void main(String[] args) {
		new MouseMotionEx();
	}
}

랜덤색 넣어보기

import java.awt.Color;
import java.awt.Container;
import java.awt.FlowLayout;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.util.Random;

import javax.swing.JFrame;
import javax.swing.JLabel;

public class MouseMotionEx extends JFrame{
	JLabel la = new JLabel("No mouse event");
	MouseMotionEx(){
		setTitle("MouseMotionEx");
		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		Container c = getContentPane();
		c.setLayout(new FlowLayout());
		c.add(la);
		MyMouseListener l = new MyMouseListener();
		c.addMouseListener(l);
		c.addMouseMotionListener(l);
		
		setSize(300,300);
		setVisible(true);
	}
	
	class MyMouseListener extends MouseAdapter{		
		@Override
		public void mouseClicked(MouseEvent e) {
			int n = e.getClickCount();
			if(n == 2) {
				Container c = (Container)e.getSource();
				int r = (int)(Math.random() * 256);
				int g = (int)(Math.random() * 256);
				int b = (int)(Math.random() * 256);
				c.setBackground(new Color(r,g,b));
			}
		}

		@Override
		public void mouseDragged(MouseEvent e) {
			la.setText("Mouse Dragged("+e.getX()+", "+e.getY()+")");
		}
		
		@Override
		public void mouseMoved(MouseEvent e) {
			la.setText("Mouse Moved("+e.getX()+", "+e.getY()+")");
		}
		
		@Override
		public void mouseEntered(MouseEvent e) {
			la.setText("Mouse Entered("+e.getX()+", "+e.getY()+")");
			Container c = (Container)e.getSource();
			c.setBackground(Color.CYAN);
		}

		@Override
		public void mouseExited(MouseEvent e) {
			la.setText("Mouse Exited("+e.getX()+", "+e.getY()+")");
			Container c = (Container)e.getSource();
			c.setBackground(Color.ORANGE);
		}

		@Override
		public void mousePressed(MouseEvent e) {
			la.setText("Mouse Pressed("+e.getX()+", "+e.getY()+")");
		}

		@Override
		public void mouseReleased(MouseEvent e) {
			la.setText("Mouse Released("+e.getX()+", "+e.getY()+")");
		}
	}
	
	public static void main(String[] args) {
		new MouseMotionEx();
	}
}