读心术

import java.awt.Graphics;
import java.util.Random;
import javax.swing.*;

public class ReadHeart extends JFrame{
	String  a1="κ",a2="χ",a3="ε",a4="η",a5="ζ",a6="ψ",a7="ι",a8="λ",a9="γ",a10="θ" ;
	Random r = new Random();
	String a,b,d = "",str;
	MyCanvas mc;
	public class MyCanvas extends JPanel {
		String group[][] = new String[10][10];
		public void paint(Graphics g) {
			g.drawLine(0, 20, 300,20 );
			g.drawLine(20, 0, 20, 300);
			for(int i=0; i<=9; i++) {
				for(int j=0; j<=9; j++) {
					group[i][j] = chooseString(r.nextInt(9));
				}
			}
			group[0][0] = group[0][9] = group[1][8] = group[2][7] = group[3][6] = group[4][5] =
				group[5][4] = group[6][3] = group[7][2] = group[8][1] = group[9][0] = group[9][9]
				= chooseString(r.nextInt(9));
			for(int i=0; i<10; i++) {
				for(int j=0; j<10; j++) {
					d = d + group[i][j];
					g.drawString(d, i*20+30, j*20+40);
					d = "";
				}
				b = String.valueOf(i);
				g.drawString(b, i*20+30,15);
				g.drawString(b, 5, i*20+20+20);
			}
		}
	}
	public void luanchJFrame() {
		mc = new MyCanvas();
		this.add(mc);
		this.setLocation(300, 300);
		this.setSize(400, 400);
		this.setVisible(true);
		this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		str = "这是一个读心术程序\n先在你内心默念一个两位以内的数字，\n" +
                "然后将你想到的数字减去十位上的数字，\n" +
                "再减去个位上的数字，\n" +
                "然后在屏幕上找到对应数字(从左到右，从上到下的顺序)上的汉字\n" +
                "再点击确定我就能猜到你想的那个数字对应的图案！";
		JOptionPane.showMessageDialog(null, str, "读心术", JOptionPane.INFORMATION_MESSAGE);
		JOptionPane.showMessageDialog(null, "你得到的汉字是"+mc.group[8][1]);
	}

	public static void main(String[] args) {
		new ReadHeart().luanchJFrame();

	}
	String chooseString(int a) {
		String b = " ";
		switch(a) {
		case 0:b = a1;
			break;
		case 1:b = a2;
			break;
		case 2:b = a3;
			break;
		case 3:b = a4;
			break;
		case 4:b = a5;
			break;
		case 5:b = a6;
			break;
		case 6:b = a7;
			break;
		case 7:b = a8;
			break;
		case 8:b = a9;
			break;
		case 9:b = a10;
			break;
		}
		return b;
	}
}