GCD of two numbers in java

Java code to to find GCD or Greatest common divisor of two numbers

import java.io.*;

class Test {

    public static void main(String[] args) throws IOException {

      int n1,n2;

      System.out.println("Enter first number:");

      BufferedReader br1=new BufferedReader(new InputStreamReader (System.in));

      n1=Integer.parseInt(br1.readLine());

      System.out.println("Enter second number:");

      BufferedReader br2=new BufferedReader(new InputStreamReader (System.in));

      n2=Integer.parseInt(br2.readLine());

      while(n1!=n2){

            if(n1>n2)

                  n1=n1-n2;

            else

                  n2=n2-n1;

      }

      System.out.println("GCD of two number is "+n1);

  }

}

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