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명품 JAVA Programming 제 13장 실습문제 본문

Java

명품 JAVA Programming 제 13장 실습문제

_mojo_ 2021. 8. 9. 13:03

2번 실습 문제 code

import javax.swing.*; // JFrame
import javax.swing.event.ChangeEvent;
import javax.swing.event.ChangeListener;
import java.awt.*; // Container
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.ItemEvent;
import java.awt.event.ItemListener;
import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import java.awt.event.MouseMotionAdapter;
import java.awt.event.MouseMotionListener;
import java.util.Vector;
import java.awt.*;

public class Practice extends JFrame{
	
	private int operation = 0;
	private MyPanel myPanel;
	
	class MyPanel extends JPanel implements Runnable{
		
		private int mouseOperation=0;
		
		public void paintComponent(Graphics g) {
			if(mouseOperation != 0) {
				super.paintComponent(g);
				int x = (int)(Math.random()*(this.getWidth()-50));
				int y = (int)(Math.random()*(this.getHeight()-50));
				g.setColor(Color.RED);
				g.drawOval(x, y, 50, 50);	
			}
		}
		
		public void run() {
			mouseOperation = 1;
			while(true) {
				repaint();
				try {
					Thread.sleep(400);
				} catch(InterruptedException e) { return; }
			}
		}
	}
	
	
	Practice(){
		setTitle("13장 연습하기");
		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		myPanel = new MyPanel();
		setContentPane(myPanel);
		
		addMouseListener(new MouseAdapter() {
			public void mousePressed(MouseEvent e) {
				if(operation == 0) {
					operation = 1;
					Thread th = new Thread(myPanel);
					th.start();
				}
			}
		});
		
		setSize(400, 400); 
		setVisible(true); 
	}
	
	public static void main(String[] args) {
		// TODO Auto-generated method stub
		new Practice();
	}

}

 

실습문제 3번 code

 

import javax.swing.*; // JFrame
import javax.swing.event.ChangeEvent;
import javax.swing.event.ChangeListener;
import java.awt.*; // Container
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.ItemEvent;
import java.awt.event.ItemListener;
import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import java.awt.event.MouseMotionAdapter;
import java.awt.event.MouseMotionListener;
import java.util.Calendar;
import java.util.Vector;
import java.awt.*;

public class Practice extends JFrame{
	
	private TimeLabel tl;
	
	class TimeLabel extends JLabel implements Runnable{
		
		Calendar c;
		
		TimeLabel(){
			setFont(new Font("Gothic", Font.ITALIC, 60));			
		}
		
		public void run() {
			while(true) {
				c = Calendar.getInstance();
				int hour = c.get(Calendar.HOUR_OF_DAY);
				int min = c.get(Calendar.MINUTE);
				int second = c.get(Calendar.SECOND);
				setText(hour+":"+min+":"+second);
				try {
					Thread.sleep(1000);
				}
				catch(InterruptedException e) {
					return;
				}
			}
		}
	}
	
	Practice(){
		setTitle("13장 연습하기");
		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		Container c = getContentPane();
		c.setLayout(new FlowLayout(FlowLayout.CENTER, 10, 50));
		
		tl = new TimeLabel();
		c.add(tl);
		Thread th = new Thread(tl);
		
		setSize(400, 300); 
		setVisible(true); 
		
		th.start();
	}
	
	public static void main(String[] args) {
		// TODO Auto-generated method stub
		new Practice();
	}

}

실습문제 4번 - (1) code

 

import javax.swing.*; // JFrame
import javax.swing.event.ChangeEvent;
import javax.swing.event.ChangeListener;
import java.awt.*; // Container
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.ItemEvent;
import java.awt.event.ItemListener;
import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import java.awt.event.MouseMotionAdapter;
import java.awt.event.MouseMotionListener;
import java.util.Calendar;
import java.util.Vector;
import java.awt.*;

public class Practice extends JFrame{
	
	private VibrateContentPane vcp;
	
	class VibrateContentPane extends JFrame implements Runnable{		
		JFrame jf;
		
		VibrateContentPane(JFrame jf){
			this.jf = jf;
		}
		
		public void run() {
			int op = 0;
			while(true) {
				if(op++ == 0) {
					jf.setLocation(200,200);
				}
				else if(op++ == 1) {
					jf.setLocation(220,220);	
				}
				else if(op++ == 2) {
					jf.setLocation(200,200);
				}
				else {
					op = 0;
					jf.setLocation(180,180);
				}

				try {
					Thread.sleep(30);
				}
				catch(InterruptedException e) {
					return;
				}
			}
		}
	}
	
	Practice(){
		setTitle("13장 연습하기");
		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		Container c = getContentPane();
		c.setLayout(null);
		
		vcp = new VibrateContentPane(this);
		Thread th = new Thread(vcp);
		
		setSize(400, 300); 
		setVisible(true); 
		
		th.start();
	}
	
	public static void main(String[] args) {
		// TODO Auto-generated method stub
		new Practice();
	}

}

 

 

실습문제 5번 code

 

import javax.swing.*; // JFrame
import javax.swing.event.ChangeEvent;
import javax.swing.event.ChangeListener;
import java.awt.*; // Container
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.ItemEvent;
import java.awt.event.ItemListener;
import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import java.awt.event.MouseMotionAdapter;
import java.awt.event.MouseMotionListener;
import java.util.Calendar;
import java.util.Vector;
import java.awt.*;

class Game extends JPanel{
	
	private Bullet bt;
	private Target tg;
	private ImageIcon icon = new ImageIcon("C:\\\\Temp/lion.gif");
	private Image img = icon.getImage();
	private int bulX, bulY, tgX, tgY, mapX, start=0, bulStart=0;
	private Thread tgTh, btTh;
	
	class Bullet implements Runnable{
		public void run() {
			int tmpY = bulY;
			while(true) {
				if(bulStart == 1) {
					bulY -= 5;
					if(bulY < 0) {
						bulStart = 0;
						bulY = tmpY;
					}
					if(bulX >= tgX && bulX <= tgX+100 && bulY >=0 && bulY <=100) {
						bulStart = 0;
						bulY = tmpY;
					}	
				}
				try {
					Thread.sleep(50);
				} catch(InterruptedException e) { return; }
			}
		}
	}
	
	class Target implements Runnable{		
		public void run() {
			int direction = -1;
			while(true) {
				if(direction == 1) {
					if(tgX + 105 <= mapX) tgX += 5;
					else {
						direction = -1;
						tgX -= 5;
					}
				}
				else if(direction == -1){
					if(tgX - 5 >= 0) tgX -= 5;
					else {
						direction = 1;
						tgX += 5;
					}
				}
				try {
					Thread.sleep(100);
				} catch(InterruptedException e) { return; }
			}
		}
	}

	Game(){				
		addKeyListener(new KeyAdapter() {
			public void keyPressed(KeyEvent e) {
				int keyValue = e.getKeyCode();
				if(keyValue == KeyEvent.VK_ENTER) {
					bulStart = 1;
				}
			}
		});	
		
		setFocusable(true);
		requestFocus();
	}
	
	public void paintComponent(Graphics g) {
		super.paintComponent(g);
		
		if(start++ == 0) {
			bulX = this.getWidth()/2 - 10; bulY = this.getHeight() - 70;
			tgX = this.getWidth()/2 - 50; 
			mapX = this.getWidth();	
		
			tg = new Target();
			tgTh = new Thread(tg);
			tgTh.start();
		
			bt = new Bullet();
			btTh = new Thread(bt);
			btTh.start();
		}
		
		g.setColor(Color.BLACK);
		g.fillRect((this.getWidth()/2 - 25), (this.getHeight() - 50),50,50);
		g.setColor(Color.RED);
		g.fillRect((this.getWidth()/2 - 10), bulY, 20, 20);
		g.drawImage(img, tgX, 0, 100, 100, this);
	}
	
}

public class Practice extends JFrame{

	Practice(){
		setTitle("13장 연습하기");
		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		setContentPane(new Game());
		
		setSize(400, 600); 
		setVisible(true); 
	}
	
	public static void main(String[] args) {
		// TODO Auto-generated method stub
		new Practice();
	}

}

 

 

실습문제 6번 code

 

import javax.swing.*; // JFrame
import javax.swing.event.ChangeEvent;
import javax.swing.event.ChangeListener;
import java.awt.*; // Container
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.ItemEvent;
import java.awt.event.ItemListener;
import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import java.awt.event.MouseMotionAdapter;
import java.awt.event.MouseMotionListener;
import java.util.Calendar;
import java.util.Vector;
import java.awt.*;


public class Practice extends JFrame{
	
	class BubbleLabel extends JPanel implements Runnable{	
		private ImageIcon icon = new ImageIcon("C:\\\\Temp/lion.gif");
		private Image img = icon.getImage();
		private Vector<Point> v = new Vector<Point>();
		
		BubbleLabel(){
			addMouseListener(new MouseAdapter() {
				public void mousePressed(MouseEvent e)
				{
					Point p = e.getPoint();
					v.add(p);
				}
			});
			
			setFocusable(true);
			requestFocus();
		}
		
		public void paintComponent(Graphics g) {
			super.paintComponent(g);
			if(v.size()==0) {
				g.drawImage(img, 0, 0, this.getWidth(), this.getHeight(), this);
			}
			else {
				for(int i=0; i<v.size(); i++) {
					int x = v.get(i).x;
					int y = v.get(i).y;	
					if(y <= -75) {
						v.remove(i);
						i--;
						continue;
					}
					g.drawImage(img, x, y, 75, 75, this);
					v.set(i, new Point(x, y-5));
				}
			}	
		}
		
		synchronized public void run() {
			while(true) {
				try {
					Thread.sleep(200);
				}
				catch(InterruptedException e) {
					return;
				}
			}
		}
	}
	
	Practice(){
		setTitle("13장 연습하기");
		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		
		BubbleLabel bl = new BubbleLabel();
		setContentPane(bl);
		Thread th = new Thread(bl);
		
		setSize(400, 600); 
		setVisible(true); 
		
		th.start();
	}
	
	public static void main(String[] args) {
		// TODO Auto-generated method stub
		new Practice();
	}

}

 

 

실습문제 7번 code

 

import javax.swing.*; // JFrame
import javax.swing.event.ChangeEvent;
import javax.swing.event.ChangeListener;
import java.awt.*; // Container
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.ItemEvent;
import java.awt.event.ItemListener;
import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import java.awt.event.MouseMotionAdapter;
import java.awt.event.MouseMotionListener;
import java.util.Calendar;
import java.util.Vector;
import java.awt.*;


public class Practice extends JFrame{
	
	private MyPanel panel = new MyPanel();
	private int direction = 0; // right : 0, down : 1, left : 2, up : 3
	
	class MyPanel extends JPanel implements Runnable{
		
		private ImageIcon icon = new ImageIcon("C:\\\\Temp/lion.gif");
		private Image img = icon.getImage();
		private ImageIcon icon1 = new ImageIcon("C:\\\\Temp/apple.jpg");
		private Image img1 = icon1.getImage();
		private ImageIcon icon2 = new ImageIcon("C:\\\\Temp/kitty.png");
		private Image img2 = icon2.getImage();
		private Vector<Point> v = new Vector<Point>();
		
		MyPanel(){
			
			for(int i=0; i<10; i++) {
				v.add(new Point(100+20*i,300));
			}
			
			addKeyListener(new KeyAdapter() {
				public void keyPressed(KeyEvent e) {
					int key = e.getKeyCode();
					if(key==KeyEvent.VK_UP) {
						direction = 3;
					}
					else if(key==KeyEvent.VK_DOWN) {
						direction = 1;
					}
					else if(key==KeyEvent.VK_RIGHT) {
						direction = 0;
					}
					else if(key==KeyEvent.VK_LEFT) {
						direction = 2;
					}
				}
			});
			
			setFocusable(true);
			requestFocus();
		}
		
		public void paintComponent(Graphics g) {
			super.paintComponent(g);
			g.drawImage(img, 0, 0, getWidth(), getHeight(), this);
			
			for(int i=0;i<v.size();i++) {
				if(i!=v.size()-1) {
					int x = v.get(i).x, y=v.get(i).y;
					g.drawImage(img2, x, y, 20, 20, this);
				}
				else {
					int x = v.get(i).x, y=v.get(i).y;
					g.drawImage(img1, x, y, 20, 20, this);
				}
			}
		}
		
		public void run() {
			while(true) {
				if(direction == 0 || direction == 2) {
					int x = v.get(v.size()-1).x , y = v.get(v.size()-1).y;
					v.set(v.size() - 1, new Point(x + 20 * (direction==0 ? 1 : -1), y));
					for(int i=v.size()-2; i>=0; i--) {
						int x1 = v.get(i).x, y1 = v.get(i).y;
						v.set(i, new Point(x, y));
						x = x1; y = y1;
					}
				}
				else {
					int x = v.get(v.size()-1).x , y = v.get(v.size()-1).y;
					v.set(v.size() - 1, new Point(x, y + 20 * (direction==1 ? 1 : -1)));
					for(int i=v.size()-2; i>=0; i--) {
						int x1 = v.get(i).x, y1 = v.get(i).y;
						v.set(i, new Point(x, y));
						x = x1; y = y1;
					}
				}
				try {
					Thread.sleep(200);
				}
				catch(InterruptedException e) {
					return;
				}
			}
		}
	}
	
	Practice(){
		setTitle("13장 연습하기");
		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		setContentPane(panel);
		
		Thread th = new Thread(panel);
		
		setSize(400, 400); 
		setVisible(true); 
		
		th.start();
	}
	
	public static void main(String[] args) {
		// TODO Auto-generated method stub
		new Practice();
	}

}

 

 

실습문제 8번 code

 

import javax.swing.*; // JFrame
import javax.swing.event.ChangeEvent;
import javax.swing.event.ChangeListener;
import java.awt.*; // Container
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.ItemEvent;
import java.awt.event.ItemListener;
import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import java.awt.event.MouseMotionAdapter;
import java.awt.event.MouseMotionListener;
import java.util.Calendar;
import java.util.Vector;
import java.awt.*;


public class Practice extends JFrame{
	
	private MyPanel panel = new MyPanel();
	private int direction = 0; // right : 0, down : 1, left : 2, up : 3
	
	class MyPanel extends JPanel implements Runnable{
		
		private ImageIcon icon = new ImageIcon("C:\\\\Temp/lion.gif");
		private Image img = icon.getImage();
		private ImageIcon icon1 = new ImageIcon("C:\\\\Temp/kitty.png");
		private Image img1 = icon1.getImage();
		private Vector<Point> v = new Vector<Point>();
		
		MyPanel(){
			System.out.println(getWidth()+" "+getHeight());
			for(int i=0;i<50;i++) {
				int x = (int)(Math.random() * 400);
				int y = (int)(Math.random() * 400);
				v.add(new Point(x,y));
			}
		}
		
		public void paintComponent(Graphics g) {
			super.paintComponent(g);
			g.drawImage(img, 0, 0, getWidth(), getHeight(), this);
		
			for(int i=0; i<v.size(); i++) {
				int x = v.get(i).x, y = v.get(i).y;
				g.drawImage(img1, x, y, 20, 20, this);
			}
		}
		
		public void run() {
			while(true) {
				for(int i=0; i<v.size(); i++) {
					int x = v.get(i).x, y = v.get(i).y;
					if(y + 30 > getHeight()) {
						x = (int)(Math.random()*getWidth());
						y = 0;
						v.set(i, new Point(x,y));
					}
					else {
						v.set(i, new Point(x, y+20));
					}
				}
				try {
					Thread.sleep(50);
				}
				catch(InterruptedException e) {
					return;
				}
			}
		}
	}
	
	Practice(){
		setTitle("13장 연습하기");
		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		setContentPane(panel);
		
		Thread th = new Thread(panel);
		
		setSize(400, 400); 
		setVisible(true); 
		
		th.start();
	}
	
	public static void main(String[] args) {
		// TODO Auto-generated method stub
		new Practice();
	}

}

 

 

실습문제 9번 code

 

import javax.swing.*; // JFrame
import javax.swing.event.ChangeEvent;
import javax.swing.event.ChangeListener;
import java.awt.*; // Container
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.ItemEvent;
import java.awt.event.ItemListener;
import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import java.awt.event.MouseMotionAdapter;
import java.awt.event.MouseMotionListener;
import java.util.Calendar;
import java.util.Random;
import java.util.Vector;
import java.awt.*;


public class Practice extends JFrame{
	
	private JLabel la[] = new JLabel[3];
	private JLabel gameLa = new JLabel("마우스를 클릭할 때 마다 게임합니다.");
	private GamblingRunnable gr = new GamblingRunnable();
	private int op = 0;
	
	class GamblingRunnable implements Runnable{
		boolean gambling = false;
		synchronized public void waitForGambling() {
			if(!gambling) {
				try { wait(); }
				catch(InterruptedException e) { return; }
			}
		}
		
		synchronized public void startGambling() {
			gambling = true;
			notify();
		}
		
		public void game() {
			
			try {
				int gameOp=1, before=-1;
				
				for(int i=0; i<la.length; i++) {
					int r = (int)(Math.random()*5);
					if(before == r) gameOp++;
					before = r;
					la[i].setText("  " + r + "  ");
					Thread.sleep(200);
				}
				
				if(gameOp == 3) gameLa.setText("축하합니다!!");
				else gameLa.setText("아쉽군요");
				
			} catch(InterruptedException e) { return; }
			
		}
		
		public void run() {
			while(true) {
				waitForGambling();
				game();
				gambling = false;
			}
		}
	}
	
	Practice(){
		setTitle("13장 연습하기");
		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		Container c = getContentPane();
		c.setLayout(new FlowLayout(FlowLayout.CENTER, 30, 20));
		
		for(int i=0; i<la.length; i++) {
			la[i] = new JLabel("  0  ");
			la[i].setFont(new Font("Jokerman", Font.ITALIC, 30));
			la[i].setForeground(Color.YELLOW);
			la[i].setOpaque(true);
			la[i].setBackground(Color.PINK);
			c.add(la[i]);
		}
		
		c.add(gameLa);
		
		Thread th = new Thread(gr);
		
		addMouseListener(new MouseAdapter() {
			public void mousePressed(MouseEvent e) {
				gr.startGambling();
			}
		});
		
		setSize(300, 180); 
		setVisible(true); 
		
		th.start();
	}
	
	public static void main(String[] args) {
		// TODO Auto-generated method stub
		new Practice();
	}

}

 

실습문제 10번 code

 

import javax.swing.*; // JFrame
import javax.swing.event.ChangeEvent;
import javax.swing.event.ChangeListener;
import java.awt.*; // Container
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.ItemEvent;
import java.awt.event.ItemListener;
import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import java.awt.event.MouseMotionAdapter;
import java.awt.event.MouseMotionListener;
import java.util.Calendar;
import java.util.Random;
import java.util.Vector;
import java.awt.*;


public class Practice extends JFrame{
	
	private MyPanel panel = new MyPanel();
	
	class MyPanel extends JPanel implements Runnable{
		
		private boolean op = false;
		private int x=0, y=0;
		private ImageIcon icon = new ImageIcon("C:\\\\Temp/lion.gif");
		private Image img = icon.getImage();
		
		MyPanel(){
			addMouseListener(new MouseAdapter() {
				public void mouseEntered(MouseEvent e) {
					x = e.getX(); y = e.getY();
					draw();
				}
				public void mouseExited(MouseEvent e) {
					op = false;
				}
			});
			
			addMouseMotionListener(new MouseMotionAdapter() {
				public void mouseMoved(MouseEvent e) {
					x = e.getX(); y = e.getY();
				}
			});
		}
		
		public void paintComponent(Graphics g) {
			super.paintComponent(g);
			if(!op) g.drawImage(img, 0, 0, getWidth(), getHeight(), this);
			else {
				g.setColor(Color.MAGENTA);
				int width = (int)(Math.random()*(getWidth()-x));
				int height = (int)(Math.random()*(getHeight()-y));
				g.fillOval(x, y, width, height);
			}
		}
		
		synchronized public void stop() {
			if(!op) {
				try {
					wait();
				} catch(InterruptedException e) { return; }	
			}
		}
		
		synchronized public void draw() {
			op = true;
			notify();
		}
		
		public void run() {
			while(true) {
				stop();
				try {
					Thread.sleep(300);
				} catch(InterruptedException e) { return; }
			}
		}
	}
	
	Practice(){
		setTitle("13장 연습하기");
		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		setContentPane(panel);
		
		Thread th = new Thread(panel);
		
		setSize(600, 600); 
		setVisible(true); 
		
		th.start();
	}
	
	public static void main(String[] args) {
		// TODO Auto-generated method stub
		new Practice();
	}

}

 

 

실습문제 11번 code

 

import javax.swing.*; // JFrame
import javax.swing.event.ChangeEvent;
import javax.swing.event.ChangeListener;
import java.awt.*; // Container
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.ItemEvent;
import java.awt.event.ItemListener;
import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import java.awt.event.MouseMotionAdapter;
import java.awt.event.MouseMotionListener;
import java.util.Calendar;
import java.util.Random;
import java.util.Vector;
import java.awt.*;


public class Practice extends JFrame{
	
	private NorthPanel np = new NorthPanel();
	private SouthPanel sp = new SouthPanel();
	private CenterPanel cp = new CenterPanel();
	
	class NorthPanel extends JPanel{
		private JLabel la = new JLabel("산성비 게임을 시작하려면 <Enter> 키를 누르세요");
		
		NorthPanel(){
			setLayout(new FlowLayout(FlowLayout.LEFT));
			la.setFont(new Font("Jokerman", Font.BOLD, 15));
			add(la);
		}
		
		public void setLabel(String s) {
			la.setText(s);
		}
	}
	
	class CenterPanel extends JPanel implements Runnable{
		
		private Vector<String> v = new Vector<String>();
		private boolean game = false;
		private ImageIcon icon = new ImageIcon("C:\\\\Temp/lion.gif");
		private Image img = icon.getImage();
		private int x, y, r;
		
		public void setWord() {
			v.add("apple"); v.add("public"); v.add("cuttlefish");
			v.add("kakao");	v.add("java"); v.add("success");
			v.add("pink"); v.add("yellow");	v.add("environment");
			v.add("orange"); v.add("envelopment"); v.add("smart");
			v.add("sogang"); v.add("university"); v.add("game");
			v.add("rain"); v.add("notebook"); v.add("coffee");
		}
		
		public void resetWord() {
			r = (int)(Math.random()*v.size());
			y = 0;
		}
		
		public String getWord() {
			return v.get(r);
		}
		
		CenterPanel(){
			setWord();
			r = (int)(Math.random()*v.size());
			x = 100;
			y = 0;
			
			addKeyListener(new KeyAdapter() {
				public void keyPressed(KeyEvent e) {
					int keyCode = (int)(e.getKeyCode());
					if(keyCode == KeyEvent.VK_ENTER) {
						gameStart();
					}
				}
			});
			
			setFocusable(true);
			requestFocus();
		}
		
		public void paintComponent(Graphics g) {
			super.paintComponent(g);
			if(!game) g.drawImage(img, 0, 0, getWidth(), getHeight(), this);
			else {
				y += 5;
				g.setColor(Color.MAGENTA);
				g.setFont(new Font("Arial",Font.ITALIC,30));
				g.drawString(v.get(r), x, y);
			}
		}
		
		synchronized public void gameStop() {
			if(!game) {
				try {
					wait();
				} catch(InterruptedException e) { return; }
			}
		}
		
		synchronized public void gameStart() {
			game = true;
			notify();
		}
		
		public void run() {
			while(true) {
				gameStop();
				if(y > getHeight()) {
					resetWord();
					np.setLabel("시간초과실패");
				}
				try {
					Thread.sleep(50);
				} catch(InterruptedException e) { return; }
			}
		}
	}
	
	class SouthPanel extends JPanel{
		
		private JTextField tf = new JTextField("", 20);
		
		SouthPanel(){
			setBackground(Color.GRAY);
			add(tf);
			
			tf.addActionListener(new ActionListener() {
				public void actionPerformed(ActionEvent e) {
					String word = cp.getWord();
					String myWord = tf.getText();
					if(myWord.equals("그만")) System.exit(0);
					if(myWord.equals(word)) {
						cp.resetWord();
						np.setLabel("성공");
					}
					tf.setText("");
				}
			});
		}
	}
	
	Practice(){
		setTitle("13장 연습하기");
		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		Container c = getContentPane();
		c.setLayout(new BorderLayout());
		
		c.add(np, BorderLayout.NORTH);
		c.add(sp, BorderLayout.SOUTH);
		c.add(cp, BorderLayout.CENTER);
		
		Thread th = new Thread(cp);
		
		setSize(400, 400); 
		setVisible(true); 
		
		th.start();
	}
	
	public static void main(String[] args) {
		// TODO Auto-generated method stub
		new Practice();
	}

}

 

 

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