Difference Between Using Constructors and valueOf( ) Method to Create Integer Objects - Java Object Oriented Design

Java examples for Object Oriented Design:Objects Utility

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Description

Difference Between Using Constructors and valueOf( ) Method to Create Integer Objects

Demo Code

public class Main {
  public static void main(String[] args) {

    // Create two Integer objects using constructors
    Integer iv1 = new Integer(25);
    Integer iv2 = new Integer(25);
    System.out.println("iv1 = iv1 = " + iv1 + ", iv2 = " + iv2);
  
    // Compare iv1 and iv2 references
    System.out.println("iv1 == iv2: " + (iv1 == iv2));

    // Let us see if they are equal in values
    System.out.println("iv1.equals(iv2): " + iv1.equals(iv2));

    System.out.println("\nUsing the valueOf() method:");

    // Create two Integer objects using the valueOf() 
    Integer iv3 = Integer.valueOf(25);
    Integer iv4 = Integer.valueOf(25);
    System.out.println("iv3 = " + iv3 + ", iv4 = " + iv4);

    // Compare iv3 and iv4 references
    System.out.println("iv3 == iv4: " + (iv3 == iv4));

    // Let us see if they are qual in values
    System.out.println("iv3.equals(iv4): " + iv3.equals(iv4));
  }/*from   ww  w .j a  va2  s  .c om*/
}

Result


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