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();
}
}
}