two-dimensional+arrays

TESTING..... 2D array start with a variable type follow by two []s. > example: double[] [] x = new double [3] [5] this make an array of 3 rows and 5 cols like normal array, to modify an 2D array can be done like this: x[1] [1] = 2.0;

To found the rows and columns of a two 2D array: > x.length < number of rows > x[0].length < number of columns

for example: code format="java" import objectdraw.*; import java.awt.*; import java.util.Random; public class colorGrid extends FrameWindowController { private FilledRect[][] grids; private Random rand; public void begin {    grids = new FilledRect[10][10]; rand = new Random; for( int y = 0 ; y < grids[0].length ; y++) {        for( int x = 0; x < grids.length; x++) {        grids[x][y] = new FilledRect(100 + x*20, 100 + y*20, 20, 20, canvas); grids[x][y].setColor( new Color( rand.nextInt(255),rand.nextInt(255),rand.nextInt(255))); }    } } }

code this make FilledRect like this :