System.out.println("welcom to celculator");
while(true)
{
 		System.out.println("what is the first number?");
 		int one = Integer.parseInt(br.readLine());
 		
 		System.out.println("chos the operator (+) (-) (*)");
 		String oper = br.readLine();
 		
 		System.out.println("what is the second number?");
 		int two = Integer.parseInt(br.readLine());
 		
 		int avg = one+two;
 		int avg2 = one-two;
 		int avg3 =one * two;
 		
 		if (oper.equals("+")){
 			System.out.println("your sum is"+":"+avg);
 		}
 			
 		if (oper.equals("-")){
 			System.out.println("your sum is"+":"+avg2);
 		}
 		
 		if (oper.equals("*")){
 			System.out.println("your sum is"+":"+avg3);
 		}
 		System.out.println("if you want to calculate agin press(y)");
 		String y = br.readLine();
 		if (y.equals("y"))
                {
 			break;
 		}
}