我想通过applet的用户输入创建一个2D随机绘制的数组。用户将选择数组大小和颜色数量。当我按下5然后从控制台输入输入时，代码正在工作。但我想通过keylistener或类似的东西从小程序屏幕中获取它。
import java.applet.Applet;
import java.awt.Color;
import java.awt.Graphics;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;
import java.net.URL;
import java.util.Random;
import java.util.Scanner;
public class Renderer2 extends Applet implements KeyListener, Runnable {
int[][] tilemap;
int rows, columns;
public void init() {
setSize(800, 480);
setBackground(new Color(Integer.parseInt("FF9933", 16)));
addKeyListener(this);
try {
URL base = getDocumentBase();
} catch (Exception e) {
// TODO: handle exception
}
}
public void start() {
Thread thread = new Thread(this);
thread.start();
}
private void createTilemap() {
System.out.println("enter");
Scanner user_input = new Scanner(System.in);
final int z = user_input.nextInt();
System.out.println("enter2");
Scanner user_inputt = new Scanner(System.in);
final int a = user_inputt.nextInt();
System.out.println("enter3");
Scanner user_inputtt = new Scanner(System.in);
final int b = user_inputtt.nextInt();
tilemap = new int[a][b];
rows = tilemap.length;
columns = tilemap[a - 1].length;
setSize(25 * a, 25 * b);
setBackground(new Color(Integer.parseInt("FF9933", 16)));
Random r = new Random();
for (int i = 0; i < rows; i++) {
for (int j = 0; j < columns; j++) {
tilemap[i][j] = r.nextInt(z + 1);
}
}
}
public void paint(Graphics g) {
for (int i = 0; i < rows; i++) {
for (int j = 0; j < columns; j++) {
int mod_i = 25 * i;
int mod_j = 25 * j;
switch (tilemap[i][j]) {
case 0:
g.setColor(new Color(Integer.parseInt("663300", 16)));
g.fillRect(mod_i, mod_j, 15, 15);
break;
case 1:
g.setColor(new Color(Integer.parseInt("00CCCC", 16)));
g.fillRect(mod_i, mod_j, 25, 25);
break;
case 2:
g.setColor(new Color(Integer.parseInt("FF9999", 16)));
g.fillRect(mod_i, mod_j, 30, 30);
break;
case 3:
g.setColor(new Color(Integer.parseInt("660033", 16)));
g.fillRect(mod_i, mod_j, 20, 20);
break;
case 4:
g.setColor(new Color(Integer.parseInt("FFE5CC", 16)));
g.fillRect(mod_i, mod_j, 35, 35);
break;
}
}
}
}
@Override
public void keyPressed(KeyEvent e) {
switch (e.getKeyCode()) {
case KeyEvent.VK_5:
System.out.println("5");
createTilemap();
break;
case KeyEvent.VK_6:
System.out.println("6");
break;
}
}
@Override
public void keyReleased(KeyEvent e) {
// TODO Auto-generated method stub
}
@Override
public void keyTyped(KeyEvent e) {
// TODO Auto-generated method stub
}
@Override
public void run() {
try {
Thread.sleep(17);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}