Passing an object to a method example

Byron KiourtzoglouNovember 11th, 2012Last Updated: July 21st, 2013

0 110 1 minute read

With this example we are going to demonstrate how to pass an object to a method. In short, we have created a class and a method to pass the object of the class:

We have created a class, Character with a char field.
We have created another class, PassObject, that has a static method, void setCh(Character y). The method gets a Character object and changes its char field to 'z'.
We create a new instance of Character class and set its char field to 'a'.
Then we use the setCh(Character y) method of PassObject class to change again the field of Character object.
In both ways the field of Character object is changed.

Let’s take a look at the code snippet that follows:

package com.javacodegeeks.snippets.core;


class Character {
    
    char ch;
}

public class PassObject {

    static void setCh(Character y) {

  y.ch = 'z';
    }

    public static void main(String[] args) {

  Character x = new Character();

  x.ch = 'a';

  System.out.println("1: x.ch: " + x.ch);

  setCh(x);

  System.out.println("2: x.ch: " + x.ch);
    }
}

Output: