Java-2D Square Root

/* Program to print two-dimensional Square Root Table */ import java.text.*; // to include DecimalFormat class class TwoDArray5 { public static void main(String args[]) { double a[][]= new double[10][10]; int i,j; double x,y; DecimalFormat df = new DecimalFormat("0.00"); // formatting System.out.println("--------Square Root Table--------\n"); for(i=0,x=0.0;i<10;i++,x=x+1.0) for(j=0,y=0.0;j<10;j++,y=y+0.1) a[i][j] = Math.sqrt(x+y); for(j=0,y=0.0;j<10;j++,y=y+0.1) System.out.print(" "+df.format(y)); for(j=0;j<10;j++) System.out.print("=============="); System.out.println(); for(i=0,x=0.0;i<10;i++,x=x+1.0) { System.out.print(x+" | "); for(j=0;j<10;j++) System.out.print(" "+df.format(a[i][j])); System.out.println(); } } }