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  1. /* package whatever; // don't place package name! */
  2.  
  3. import java.util.*;
  4. import java.lang.*;
  5. import java.io.*;
  6.  
  7. /* Name of the class has to be "Main" only if the class is public. */
  8. class Ideone
  9. {
  10. 	public static void main( String[] args ){
  11.     Dog aDog = new Dog("Max");
  12.     foo(aDog);
  13.  
  14.     if (aDog.getName().equals("Max")) { //true
  15.         System.out.println( "Java passes by value." );
  16.  
  17.     } else if (aDog.getName().equals("Fifi")) {
  18.         System.out.println( "Java passes by reference." );
  19.     }
  20. }
  21.  
  22. public static void foo(Dog d) {
  23.     /* d.getName().equals("Max"); // true
  24.  
  25.     d = new Dog("Fifi");
  26.     d.getName().equals("Fifi"); // true */
  27.     d.setName("Fifi");
  28. }
  29. }
  30. class Dog{
  31. 	private String name;
  32.  
  33. 	public Dog(String name){
  34. 		this.name = name;
  35. 	}
  36.  
  37. 	public String getName(){
  38. 		return this.name;
  39. 	}
  40. 	public void setName(String name){
  41. 		this.name = name;
  42. 	}
  43. }
Success #stdin #stdout 0.09s 320576KB
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Java passes by reference.
https://ideone.com/pU1SAb
language:
Java (HotSpot 12)
created:
7 years ago
visibility:
public

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