InfyTQ Assignment Coding Solution Java

Implement a program to calculate the product of three positive integer values. However, if one of the integers is 7, consider only the values to the right of 7 for calculation. If 7 is the last integer, then display -1.
Note: Only one of the three values can be 7.

The logic we have to use the if-else conditions 
class Tester { public static void main(String[] args) {      //  your code here     int num1 =7,num2=6,num3=6;    int product =0;    if(num3==7){        System.out.println(product=-1);     }     else if  (num2 ==7 ){       System.out.println(product=num3);      }  else if (num1 ==7 ){   System.out.println(pclassroduct=num2*num3);   }  else{  System.out.println(product =num1*num2*num3);     } }}