Reference Passing Test : Method Parameters « Class Definition « Java Tutorial

1.	Language
2.	Data Type
3.	Operators
4.	Statement Control
5.	Class Definition
6.	Development
7.	Reflection
8.	Regular Expressions
9.	Collections
10.	Thread
11.	File
12.	Generics
13.	I18N
14.	Swing
15.	Swing Event
16.	2D Graphics
17.	SWT
18.	SWT 2D Graphics
19.	Network
20.	Database
21.	Hibernate
22.	JPA
23.	JSP
24.	JSTL
25.	Servlet
26.	Web Services SOA
27.	EJB3
28.	Spring
29.	PDF
30.	Email
31.	J2ME
32.	J2EE Application
33.	XML
34.	Design Pattern
35.	Log
36.	Security
37.	Apache Common
38.	Ant
39.	JUnit

Java

Java Source Code / Java Documentation

C# / CSharp Open Source

SQL Server / T-SQL Tutorial

Oracle PL / SQL

Oracle PL/SQL Tutorial

Flash / Flex / ActionScript

VBA / Excel / Access / Word

XML

XML Tutorial

Microsoft Office PowerPoint 2007 Tutorial

Microsoft Office Excel 2007 Tutorial

Microsoft Office Word 2007 Tutorial

Java Tutorial » Class Definition » Method Parameters

5. 7. 2. Reference Passing Test


class Point {

  public int x;



  public int y;

}



public class MainClass {

  public static void increment(int x) {

    x++;

  }



  public static void reset(Point point) {

    point.x = 0;

    point.y = 0;

  }



  public static void main(String[] args) {

    int a = 9;

    increment(a);

    System.out.println(a); // prints 9

    Point p = new Point();

    p.x = 400;

    p.y = 600;

    reset(p);

    System.out.println(p.x); // prints 0

  }

}

9
0

5. 7. Method Parameters
	5. 7. 1.	By Value or By Reference
	5. 7. 2.	Reference Passing Test
	5. 7. 3.	Passing objects to methods
	5. 7. 4.	Use an array to pass a variable number of arguments to a method. This is the old-style approach to variable-length arguments.

w_w_w.__j___av___a_2___s___._c___o_m___ |

|Contact Us

All other trademarks are property of their respective owners.