Thread: Use 2D array to layout map with pictures

Hello everyone,

Please forgive me for my mistakes since I am a beginning programmer. Here's my situation:
I'm making a Pacman look-a-like game, now I'm making the map out of an 2D array (as a grid).
I already initialized the 2d array spots with "0" and "1". I managed to do this but now I'm stuck.

I want to use the "0" and "1" to print the map. For example the "0" are grass and the "1" are walls.
The map should be printed within a JFrame. And I would like to make the width and height 32x32 pixels.

I searched on the internet and i found a couple of example codes but non of it seems to work properly.
This is the code I'm using to make the 2D array and initialize the spots.:

public class Level1 extends javax.swing.JFrame{
 
    final int ROWS = 17;
    final int COLS = 17;
    int[][] field = new int[ROWS][COLS];
 
    public Level1() {
        initComponents();
        setLocationRelativeTo(null);
        JPanel panel = new JPanel();
 
        int[][] field = new int[][]{
            {1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1},
            {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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1},
        };     
    }
 
    public void makeMap(){
        String output = "";
        for (int row = 0; row < ROWS; row++) {
            for (int col = 0; col < COLS; col++) {
                output += " " + field[row][col];
            }
            //somekind of code?
        }
    }
 
    protected void paintComponent(Graphics g) {
 //what do i put here?
    }
 
    private void draw(Graphics g) {
       //what do i put here?
        }
    }
    }
}

Can anyone help me with this because I'm really stuck here.

Read the api for the graphics class. There are all kinds of methods which you can use in the paintCompnent method to paint your custom JFrame.