20732

Write a class named Accumulator containing:

An instance variable named sum of type integer , initialized to 0.

A method named getSum that returns the value of sum .

A method named add that accepts an integer parameter . The value of sum is increased by the value of the parameter .

ANSWER

  public class Accumulator{

            private int sum = 0;

            public int getSum(){

                        return sum;

            }

            public void add(int number){

                        sum += number;

            }

}

20631.

Write the definition of a class Clock . The class has no constructors and three instance variables . One is of type int called hours , initialized to 12 , another is of type boolean called isTicking , and the last one is of type  Integer called diff .

Answer

public class Clock

{

private int hours=12;

private boolean isTicking;

private Integer diff;

}

20632.

Write the definition of a class Clock . The class has no constructors and three instance variables . One is of type int called hours , initialized to 12 , another is of type boolean called isTicking , initialized to true , and the last one is of type Integer called diff , initialized to 5 .

Answer

public class Clock

{

private int hours = 12;

private boolean isTicking = true;

private Integer diff = 5;

}