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  1. class Dog {
  2.     String name;
  3.  
  4.     Dog(String name) {
  5.         this.name = name;
  6.     }
  7. }
  8.  
  9. class PassByValueDemo {
  10.  
  11.     // Modifies the internal state of the object
  12.     static void changeName(Dog dog) {
  13.         dog.name = "Max";
  14.         System.out.println("Inside changeName: " + dog.name);
  15.     }
  16.  
  17.     // Reassigns the reference to a new object
  18.     static void reassignDog(Dog dog) {
  19.         dog = new Dog("Charlie");
  20.         System.out.println("Inside reassignDog: " + dog.name);
  21.     }
  22.  
  23.     public static void main(String[] args) {
  24.         Dog myDog = new Dog("Buddy");
  25.  
  26.         System.out.println("Original name: " + myDog.name);
  27.  
  28.         changeName(myDog);
  29.         System.out.println("After changeName: " + myDog.name);
  30.  
  31.         reassignDog(myDog);
  32.         System.out.println("After reassignDog: " + myDog.name);
  33.     }
  34. }
  35.  
Success #stdin #stdout 0.14s 57600KB
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Standard input is empty
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Original name: Buddy
Inside changeName: Max
After changeName: Max
Inside reassignDog: Charlie
After reassignDog: Max
https://ideone.com/fUcpEv
language:
Java (12.0.1)
created:
5 days ago
visibility:
public

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