public class Test{ int[][] data ={ {0,1,2,3,4,5}, {1,2,3,4,5,6}, {2,3,4,5,6,7}, {3,4,5,6,7,8}, }; public static void main(String[] args) { int[][] data ={ {0,1,2,3,4,5}, {1,2,3,4,5,6}, {2,3,4,5,6,7}, {3,4,5,6,7,8}, }; System.out.println(data[2][4]); System.out.println(data[0][5]); foo(data[1]); System.out.println("the number of cols of the array is " + data[3].length); System.out.println("The number of rows of the array is "+ data.length); System.out.println((char)('A'+ 2)); System.out.println("A" + 2); } public static void foo(int[] a){ for(int x : a){ if(x > 5){ System.out.println("5"); return; } else{ System.out.println("6"); return; } } } }