~cpp public class Board {
	public int MAX = 20;
	public int[][] board = new int [MAX][];
	public Board()
	{
		for(int i=0; i<MAX; i++)
			board[i] = new int[MAX];
	}
	
	public void PrintScreen()
	{
		for(int i=0; i<MAX; i++)
		{
			for(int j=0; j<MAX; j++)
				System.out.print(board[i][j] + " ");
			System.out.println();

		}
		System.out.println();
	}
	
}

~cpp import java.util.Random;

public class Apple 
{
	int x;
	int y;
	int count = 0;
	
	Random rmd = new Random();
	
	public Apple()
	{
		x = rmd.nextInt(20);
		y = rmd.nextInt(20);
	}
	
	public void Exist(Board aBoard)
	{
		aBoard.board[x][y] = 2;
	}
	
}

~cpp import java.io.IOException;

public class Snake 
{
	int x, y, bx, by;
	public Snake() 
	{
		x = 10;
		y = 10;
	}
	
	public Snake(Snake aSnake)
	{
		x = aSnake.bx;
		y = aSnake.by;	
	}
	
	public void Move(Board bo) throws IOException
	{	
		Gone(bo);
		System.out.println("움직이고자 하는 방향을 입력하세요");
		System.out.println("a : 왼쪽 " + "d : 오른쪽 " + "w : 위쪽 " + "x : 아래쪽");
		
		int select = System.in.read();
		while(System.in.read()!='\n')
			continue;
		switch(select)
		{
			case 'a':
						y--;
						break;
			case 'd':
						y++;
						break;
			case 'w':
						x--;
						break;
			case 'x':
						x++;
		}	
	}
	
	public void Move(Snake aSnake)
	{
		this.x = aSnake.bx;
		this.y = aSnake.by;
	}
	
	public void Trace()
	{
		bx = x;
		by = y;	
	}
	
	public void Exist(Board aBoard)
	{
		aBoard.board[x][y] = 1;		
	}

	public void Gone(Board aBoard)
	{
		aBoard.board[x][y] = 0;
	}
	
	public boolean EatApple(Board aBoard)
	{
		if(aBoard.board[x][y] == 2)
			return true;
		else
			return false;
	}
	
}

~cpp 

import java.io.IOException;
import java.util.Vector;

public class SnakeBite {
	public static void main(String[] args) throws IOException{
		Board board = new Board();
		Apple apple = new Apple();
		Vector v = new Vector();
		 
		apple.Exist(board);
		board.PrintScreen();
		
		Snake[] tSnake = new Snake[400];
		for(int i=0; i<400; i++)
			tSnake[i] = new Snake();

		tSnake[0].Exist(board);
		v.addElement(tSnake[0]);
		
		while(true)
		{
			tSnake[0].Trace();
			tSnake[0].Move(board); 
			
			if(tSnake[0].EatApple(board))
			{
				Apple tApple = new Apple();
				tApple.Exist(board);
				Snake aSnake = new Snake();
			
				v.addElement(aSnake);
				apple.count++;
			}
			tSnake[0].Exist(board);
			
			if(apple.count>=1)
			{
				for(int j=1; j<v.size(); j++)
				{
					tSnake[j] = (Snake) v.get(j);
					tSnake[j].Trace();
					tSnake[j].Move(tSnake[j-1]);
					tSnake[j].Exist(board);
				}
				board.PrintScreen();
				
				for(int j=1; j<v.size(); j++)
					tSnake[j].Gone(board);
			}
			else
				board.PrintScreen();
			
		}
	}
}

~cpp 
public class Snake {
	int x, y, bx, by;
	static int count = 0; 
	public Snake()
	{
		x = 220;
		y = 220;
	}
	
	public Snake(Snake aSnake)
	{
		x = aSnake.bx;
		y = aSnake.by;
	}
	
	public void Move(String direction){ 
 
		if(direction.equals("Right")) x+=20; 
		else if(direction.equals("Left")) x-=20;  
		else if(direction.equals("Down")) y+=20; 
		else if(direction.equals("Up")) y-=20; 	
	}
	 
	public void Move(Snake aSnake)
	{
		this.x = aSnake.bx;
		this.y = aSnake.by;
	}
	
	public void Trace()
	{
		bx = x;
		by = y;	
	}
}

~cpp 
import java.util.Vector;
import javax.swing.JOptionPane;

public class SnakeBite {
	
	public static void main(String[] args) throws InterruptedException{
	
		Board bo = new Board("스네이크 바이트");  
		
		do{
			Snake[] tSnake = new Snake[400];
			for(int i=0; i<400; i++)
				tSnake[i] = new Snake();
	
	        bo.Apple();
			Vector v = new Vector();
			v.addElement(tSnake[0]);


			while(bo.Alive()){ 
	
				tSnake[0].Trace();
				tSnake[0].Move(bo.direction); 
				bo.x[0] = tSnake[0].x;
				bo.y[0] = tSnake[0].y;		
				bo.repaint();
				
				if(tSnake[0].x==bo.bx && tSnake[0].y == bo.by){ 
					bo.Apple();
					Snake aSnake = new Snake();
				
					v.addElement(aSnake);
					Snake.count++;
					bo.num = v.size();
	
		
				}
				
				if(Snake.count>=1)
				{
					for(int j=1; j<v.size(); j++)
					{
						tSnake[j] = (Snake) v.get(j);
						tSnake[j].Trace();
						tSnake[j].Move(tSnake[j-1]);
						bo.x[j] = tSnake[j].x;
						bo.y[j] = tSnake[j].y;
					}
			//		bo.l1.setText("점수 : "  + String.valueOf(v.size()));
					bo.repaint();
				}
	
			
				Thread.sleep(bo.difficulty);
							 
			} //뱀이 죽음 
			JOptionPane.showMessageDialog(null, "죽었습니다.");
			JOptionPane.showInputDialog("Enter your name please");
			
			bo.x[0] = 220;
			bo.y[0] = 220;	
			
			for(int i=1 ; i<v.size() ; i++){
				bo.x[i] = 0;
				bo.y[i] = 0;	
			}
			
			bo.direction="";
		}while(true); // 게임 종료 
	}
}