В чем проблема?
for (int i = 0; i < height; i++) {
for (int j = 0; j < width; j++) {
if (matrix[i][j] == 0)
System.out.print(".");
else
System.out.print("X");
}
System.out.println();
}package com.javarush.task.task22.task2213;
import javax.swing.*;
public class Field {
private final int width;
private final int height;
private final int[][] matrix;
private final JFrame jFrame = new JFrame("Tetris");
public Field(int width, int height) {
this.width = width;
this.height = height;
matrix = new int[height][width];
}
public int getWidth() {
return width;
}
public int getHeight() {
return height;
}
public int[][] getMatrix() {
return matrix;
}
public void print() {
for (int i = 0; i < height; i++) {
for (int j = 0; j < width; j++) {
if (matrix[i][j] == 0)
System.out.print(".");
else
System.out.print("X");
}
System.out.println();
}
}
public void removeFullLines() {
}
public Integer getValue(int x, int y) {
return null;
}
public void setValue(int x, int y, int value) {
}
}