(MyInteger class) Design a class named MyInteger. The class contains: - An int d

Question

(MyInteger class) Design a class named MyInteger. The class contains:
- An int data field named value that stores the int value represented by this object.
- A constructor that creates a MyInteger object for the specified int value.
- A get method that returns the int value.
- Methods isEven(), isOdd(), and isPrime() that return true if the value is even, odd, or prime, respectively.
- Static methods isEven(int), isOdd(int), and isPrime(int) that return true if the specified value is even, odd, or prime, respectively.
- Static methods isEven(MyInteger), isOdd(MyInteger), and isPrime(MyInteger) that return true if the specified value is even, odd, or prime, respectively.
- Methods equals(int) and equals(MyInteger) that return true if the value in the object is equal to the specified value.
- A static method parseInt(String) that converts a string to an int value. Implement the method without using Integer.parseInt(x).
Draw the UML diagram for the class. Implement the class. Write a client program that tests all methods in the class.

Explanation / Answer

public class MyInteger {

   int value;

   public MyInteger(int value) {
       this.value = value;
   }

   public int getValue() {
       return value;
   }

   public boolean isEven() {
       return (value % 2 == 0) ? true : false;
   }

   public boolean isOdd() {
       return (value % 2 != 0) ? true : false;
   }

   public boolean isPrime() {
       for (int i = 2; i < value; i++) {
           if (value % i == 0)
               return false;
       }
       return true;
   }

   public static boolean isEven(int value) {
       return (value % 2 == 0) ? true : false;
   }

   public static boolean isOdd(int value) {
       return (value % 2 != 0) ? true : false;
   }

   public static boolean isPrime(int value) {
       for (int i = 2; i < value; i++) {
           if (value % i == 0)
               return false;
       }
       return true;
   }

   public static boolean isEven(MyInteger myInt) {
       return (myInt.value % 2 == 0) ? true : false;
   }

   public static boolean isOdd(MyInteger myInt) {
       return (myInt.value % 2 != 0) ? true : false;
   }

   public static boolean isPrime(MyInteger myInt) {
       for (int i = 2; i < myInt.value; i++) {
           if (myInt.value % i == 0)
               return false;
       }
       return true;
   }

   public boolean equals(int value) {
       return (this.value == value) ? true : false;
   }

   public boolean equals(MyInteger myInt) {
       return (this.value == myInt.value) ? true : false;
   }

   public static int parseInt(String value) {
       int i = 0, number = 0;
       boolean isNegative = false;
       int len = value.length();
       if (value.charAt(0) == '-') {
           isNegative = true;
           i = 1;
       }
       while (i < len) {
           number *= 10;
           number += (value.charAt(i++) - '0');
       }
       if (isNegative)
           number = -number;
       return number;
   }

}

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