java program on Amicable numbers

class amicable

{

public static void main(String args[])

{

for(int i=2; i<=1000; i++)

{

for(int j=i+1; j<=1000; j++)

{

if(facSum(i)==j&&facSum(j)==i)

{ System.out.println(i+" and "+j+" are Amicable!");

}

}

}

}

public static int facSum(int a)

{

int c=0;

for(int s=1; s<=a/2; s++)

{

if(a%s==0)

c+=s;

}

return c;

}

}