Automatically Removing an Unreferenced Element from a Hash Table : Map « Collections Data Structure « Java

1.	2D Graphics GUI
2.	3D
3.	Advanced Graphics
4.	Ant
5.	Apache Common
6.	Chart
7.	Class
8.	Collections Data Structure
9.	Data Type
10.	Database SQL JDBC
11.	Design Pattern
12.	Development Class
13.	EJB3
14.	Email
15.	Event
16.	File Input Output
17.	Game
18.	Generics
19.	GWT
20.	Hibernate
21.	I18N
22.	J2EE
23.	J2ME
24.	JDK 6
25.	JNDI LDAP
26.	JPA
27.	JSP
28.	JSTL
29.	Language Basics
30.	Network Protocol
31.	PDF RTF
32.	Reflection
33.	Regular Expressions
34.	Scripting
35.	Security
36.	Servlets
37.	Spring
38.	Swing Components
39.	Swing JFC
40.	SWT JFace Eclipse
41.	Threads
42.	Tiny Application
43.	Velocity
44.	Web Services SOA
45.	XML

Java Source Code / Java Documentation

Java Open Source

Jar File Download

Photoshop Tutorials

Flash Tutorials

3ds-Max Tutorials

Illustrator Tutorials

C# / CSharp Tutorial

C# / CSharp Open Source

ASP.NET Tutorial

JavaScript DHTML

JavaScript Tutorial

JavaScript Reference

HTML CSS Reference

Python Tutorial

Python Open Source

SQL Server / T-SQL

SQL Server / T-SQL Tutorial

Oracle PL / SQL

Oracle PL/SQL Tutorial

VB.Net Tutorial

Flash / Flex / ActionScript

VBA / Excel / Access / Word

Microsoft Office PowerPoint 2007 Tutorial

Microsoft Office Excel 2007 Tutorial

Microsoft Office Word 2007 Tutorial

Java » Collections Data Structure » Map

Automatically Removing an Unreferenced Element from a Hash Table


   



import java.util.Iterator;

import java.util.Map;

import java.util.WeakHashMap;



public class Main {

  public static void main(String[] argv) throws Exception {

    Map weakMap = new WeakHashMap();

    Object keyObject = "";

    Object valueObject = "";

    weakMap.put(keyObject, valueObject);



    Iterator it = weakMap.keySet().iterator();

    while (it.hasNext()) {

      Object key = it.next();

    }

  }

}

Related examples in the same category

1.	Creating and storing arrays in a map
2.	Sort based on the values
3.	Get a key from value with an HashMap
4.	Retrieve environment variables (JDK1.5)
5.	Creating a Type-Specific Map: creates a map whose keys are Integer objects and values are String objects.
6.	A map declared to hold objects of a type T can also hold objects that extend from T
7.	A value retrieved from a type-specific collection does not need to be casted
8.	Map techniques.
9.	Create an array containing the keys in a map
10.	Create an array containing the values in a map
11.	Creating a Hash Table
12.	Creating a Map That Retains Order-of-Insertion
13.	Creating a Type-Specific Map [5.0]
14.	Use Iterator to loop through the HashMap class
15.	Create type specific collections
16.	Convert Properties into Map
17.	A java.util.Map implementation using reference values
18.	Utility method that return a String representation of a map. The elements will be represented as "key = value"
19.	Utility method that return a String representation of a map. The elements will be represented as "key = value" (tab)

www.java2java.com | Contact Us

Copyright 2009 - 12 Demo Source and Support. All rights reserved.

All other trademarks are property of their respective owners.