New to java, need a applet loop

Question

Hello, I am trying to create a simple double buffering tile drawing applet based on a two dimensional map array. I have it working fine, however I would like to create a main loop which will keep calling pain() until the escape key is pressed. Can someone please show me how I can do this? Would I need to call repaint() in paint() until escape is pressed? Here is my code.
import java.awt.Graphics;
import java.awt.Image;
import javax.swing.ImageIcon;
import javax.swing.JApplet;
public class Tile_engine extends JApplet {
  private final int TILE_MAX = 4;
  private final int TILE_SIZE = 32;
  private final int APPLET_WIDTH = 640;
  private final int APPLET_HEIGHT = 480;
  private final int SKY = 0;
  private final int CLOUD_1 = 1;
  private final int CLOUD_2 = 2;
  private final int RED_BRICKS = 3;
  private final int MAP_ROWS = 15;
  private final int MAP_COLS = 20;
  private Image buffer = null;
  private Graphics bufferg;
  private Image[] tile = new Image[TILE_MAX];
  private final int map[][] =
    {{0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,2,0,0,0,0},
     {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
     {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
     {0,0,1,2,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
     {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
     {0,0,0,0,0,0,0,1,2,0,0,0,0,0,0,0,0,0,0,0},
     {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
     {0,0,0,0,0,0,0,0,0,0,0,0,3,3,3,3,0,0,0,0},
     {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
     {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
     {0,0,0,0,0,0,0,0,0,0,0,0,3,3,3,3,0,0,0,0},
     {0,0,0,0,0,0,0,3,0,0,0,0,0,0,0,0,0,0,0,0},
     {0,0,0,0,0,0,3,3,0,0,3,0,0,0,0,0,0,0,0,0},
     {3,3,3,3,3,3,3,3,0,0,3,3,3,3,3,3,3,3,3,3},
     {3,3,3,3,3,3,3,3,0,0,3,3,3,3,3,3,3,3,3,3}};
  public void init( ) {
    tile[SKY] = getImage(getDocumentBase(), "sky.png");
    tile[CLOUD_1] = getImage(getDocumentBase(), "cloud_1.png");
    tile[CLOUD_2] = getImage(getDocumentBase(), "cloud_2.png");
    tile[RED_BRICKS] = getImage(getDocumentBase(), "red_bricks.png");
    buffer = createImage(APPLET_WIDTH, APPLET_HEIGHT);
    bufferg = buffer.getGraphics();
  public void paint(Graphics g) {
    if(buffer != null) {
      int tile_id;
      for(int y=0;y<MAP_ROWS;y++) {
        for(int x=0;x<MAP_COLS;x++) {
          tile_id = map[y][x];
          bufferg.drawImage(tile[tile_id], x * TILE_SIZE, y * TILE_SIZE, this);
    g.drawImage(buffer, 0, 0, this);
}

Answer 1

Isn't %d an integer? You are passing a double. You need to use the correct formatting type for a double.
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