Please help.

Please write in Eclipse and show the output.

3. Consider the definition of the following class: public class TestClass \{ private int x private int y; //default constructor to initialize the instance variables to 0 public TestClass (){} //constructor with parameters to initialize the instance variables to the values //specified by the parameters public TestClass(int a, int b) {} // return the sum of the instance variables public int sum(){} // print the values of the instance variables public void print (){} \} a. Write the definition of the 4 methods as described in the definition of the class TestClass. b. Write a complete demo test program with the main() to test ALL of the operations of the TestDemoClass class