3. The keyword THIS The keyword this is useful when you need to refer to the instance of the class from its method. Review the code of the constructor from Listing 4-1. The names of the constructor's arguments were different from the names of the class variables. But the code in task Listing shows how you can use the same variable names, both in the arguments and in the class variables. The keyword this helps to resolve name conflicts. To instruct JVM to use the instance variable grossincome, use the corect syntax