Introduction to Programming

Passing reference type values as method parameters

One important difference between the reference types and primitive types that merits special discussion is the way their values can be used in a method. Let's see the difference by example. First, we create the SomeClass class:

class SomeClass{  private int count;  public int getCount() {    return count;  }  public void setCount(int count) {      this.count = count;    }}

Then we create a class that uses it:

public class ReferenceTypeDemo {  public static void main(String[] args) {    float f = 1.0f;    SomeClass someClass = new SomeClass();    System.out.println("\nBefore demoMethod(): f = " + f +                              ", count = " + someClass.getCount());    demoMethod(f, someClass);    System.out.println("After demoMethod(): f = " + f ...