[Java] Call by value

Call by value

- There is only call by value in java, not call by reference

1. Example

public class Test{ int data = 50; void change(int data){ data = data + 100; } public static void main(String[]args){ Test obj = new Test(); System.out.println(obj.data); obj.change(50); System.out.println(obj.data); } }

50

50

- The value of data is not changed

2. Another Example

package statics; public class Test{ int data = 50; void change(Test a){ data = data + 100; } public static void main(String[]args){ Test obj = new Test(); System.out.println(obj.data); obj.change(obj); System.out.println(obj.data); } }  

- If we pass object in place of any primitive value, original value will be changed

- This case we are passing object as a value