Determining If a Preference Node Contains a Specific Key : Preference Properties « Development Class « 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 Tutorial

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 » Development Class » Preference Properties

Determining If a Preference Node Contains a Specific Key


   



import java.util.prefs.Preferences;



public class Main {

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

  }



  // Returns true if node contains the specified key; false otherwise.

  public static boolean contains(Preferences node, String key) {

    return node.get(key, null) != null;

  }

}

Related examples in the same category

1.	Put key value pair to Preference
2.	Get childrenNames from Preferences
3.	Get keys from Preferences
4.	Get name and parent from Preference
5.	Get node from Preference
6.	Get value from Preferences
7.	Export Preferences to XML file
8.	Passing references around
9.	Retrieve the preference node using a Class object and saves and retrieves a preference in the node.
10.	Determining If a Preference Node Contains a Specific Value
11.	Removing a Preference from a Preference Node
12.	Getting and Setting Java Type Values in a Preference
13.	Getting the Maximum Size of a Preference Key and Value
14.	Getting the Roots of the Preference Trees
15.	Retrieving a Preference Node
16.	Removing a Preference Node
17.	Determining If a Preference Node Exists
18.	Retrieving the Parent and Child Nodes of a Preference Node
19.	Exporting the Preferences in a Preference Node
20.	Exporting the Preferences in a Subtree of Preference Nodes
21.	Determining When a Preference Node Is Added or Removed
22.	Read / write data in Windows registry
23.	Listening for Changes to Preference Values in a Preference Node
24.	Saving Data with the Preferences API
25.	INI file
26.	Preference Example:: export To File
27.	Properties load
28.	Properties TreeMap and Stream
29.	Parse Properties Files
30.	Preferences Demo
31.	Properties Test
32.	Sort Properties when saving
33.	Loading configuration parameters from text file based properties
34.	To read a Properties file via an Applet
35.	A Properties file stored in a JAR can be loaded this way
36.	Load a properties file in the startup directory
37.	Have a multi-line value in a properties file
38.	Convert a Properties list into a map.
39.	Listing All System Properties
40.	Getting and Setting Properties
41.	Use XML with Properties
42.	Store properties as XML file
43.	Reading and Writing a Properties File
44.	Read system property as an integer
45.	Read a configuration file using java.util.Properties
46.	Load properties from XML file
47.	Here is an example of the contents of a properties file:
48.	Use the Registry to store informations (Preferences API)
49.	Load a properties file in the classpath
50.	Listing the system properties
51.	Properties Demo
52.	PropsToXML takes a standard Java properties file, and converts it into an XML file
53.	Utility class for preferences
54.	Static methods for retrieving and system properties and converting them to various types
55.	Store recent items (e.g. recent file in a menu or recent search text in a search dialog)
56.	Storing/loading Preferences

w__ww___.j_a__va_2_s.___c__om |

Copyright 2003 - 08 Demo Source and Support. All rights reserved.

All other trademarks are property of their respective owners.