Write a program in Java statements ,Ganesh has invested some amount in bank with simple intrest. The sum of amount is Rs.900 in 3 years and Rs. 960 in 4 years.Find out the principal amount using Java.

public class PrincipalAmt {

 public static void main(String[] args){

 int t1=3,t2=4,amt1 = 900, amt2=960;

 int SI = amt2-amt1;

 int Principal = amt1-(SI*t1);

System.out.println("Principal amount = "+Principal);

 }

}