Java Doc for BooleanComparator.java in » Library » Apache-common-Collections » org » apache » commons » collections » comparators » Java Source Code / Java DocumentationJava Source Code and Java Documentation

Java Source Code / Java Documentation

1.	6.0 JDK Core
2.	6.0 JDK Modules
3.	6.0 JDK Modules com.sun
4.	6.0 JDK Modules com.sun.java
5.	6.0 JDK Modules sun
6.	6.0 JDK Platform
7.	Ajax
8.	Apache Harmony Java SE
9.	Aspect oriented
10.	Authentication Authorization
11.	Blogger System
12.	Build
13.	Byte Code
14.	Cache
15.	Chart
16.	Chat
17.	Code Analyzer
18.	Collaboration
19.	Content Management System
20.	Database Client
21.	Database DBMS
22.	Database JDBC Connection Pool
23.	Database ORM
24.	Development
25.	EJB Server geronimo
26.	EJB Server GlassFish
27.	EJB Server JBoss 4.2.1
28.	EJB Server resin 3.1.5
29.	ERP CRM Financial
30.	ESB
31.	Forum
32.	GIS
33.	Graphic Library
34.	Groupware
35.	HTML Parser
36.	IDE
37.	IDE Eclipse
38.	IDE Netbeans
39.	Installer
40.	Internationalization Localization
41.	Inversion of Control
42.	Issue Tracking
43.	J2EE
44.	JBoss
45.	JMS
46.	JMX
47.	Library
48.	Mail Clients
49.	Net
50.	Parser
51.	PDF
52.	Portal
53.	Profiler
54.	Project Management
55.	Report
56.	RSS RDF
57.	Rule Engine
58.	Science
59.	Scripting
60.	Search Engine
61.	Security
62.	Sevlet Container
63.	Source Control
64.	Swing Library
65.	Template Engine
66.	Test Coverage
67.	Testing
68.	UML
69.	Web Crawler
70.	Web Framework
71.	Web Mail
72.	Web Server
73.	Web Services
74.	Web Services apache cxf 2.0.1
75.	Web Services AXIS2
76.	Wiki Engine
77.	Workflow Engines
78.	XML
79.	XML UI

Java

Java Tutorial

Illustrator Tutorials

GIMP Tutorials

C# / C Sharp

C# / CSharp Tutorial

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 Source Code / Java Documentation » Library » Apache common Collections » org.apache.commons.collections.comparators

Source Cross Reference Class Diagram Java Document (Java Doc)

java.lang .Object

org.apache.commons.collections.comparators .BooleanComparator

BooleanComparator
final public class BooleanComparator implements Comparator,Serializable(Code)
	A Comparator for Boolean objects that can sort either true or false first. See Also: BooleanComparator.getTrueFirstComparator() See Also: BooleanComparator.getFalseFirstComparator() See Also: BooleanComparator.getBooleanComparator(boolean) since: Commons Collections 3.0 version: $Revision: 155406 $ $Date: 2005-02-26 12:55:26 +0000 (Sat, 26 Feb 2005) $ author: Rodney Waldhoff

Constructor Summary
public	BooleanComparator() Creates a `BooleanComparator` that sorts `false` values before `true` values.
public	BooleanComparator(boolean trueFirst) Creates a `BooleanComparator` that sorts `trueFirst` values before `!trueFirst` values.

Method Summary
public int	compare(Object obj1, Object obj2) Compares two arbitrary Objects.
public int	compare(Boolean b1, Boolean b2) Compares two non-`null` `Boolean` objects according to the value of BooleanComparator.sortsTrueFirst() .
public boolean	equals(Object object) Returns `true` iff that Object is is a Comparator whose ordering is known to be equivalent to mine.
public static BooleanComparator	getBooleanComparator(boolean trueFirst) Returns a BooleanComparator instance that sorts `trueFirst` values before `!trueFirst` values.
public static BooleanComparator	getFalseFirstComparator() Returns a BooleanComparator instance that sorts `false` values before `true` values.
public static BooleanComparator	getTrueFirstComparator() Returns a BooleanComparator instance that sorts `true` values before `false` values.
public int	hashCode() Implement a hash code for this comparator that is consistent with BooleanComparator.equals(Object) equals .
public boolean	sortsTrueFirst() Returns `true` iff I sort `true` values before `false` values.

Constructor Detail

BooleanComparator

public BooleanComparator()(Code)

Creates a BooleanComparator that sorts false values before true values.

Equivalent to BooleanComparator.BooleanComparator(boolean) BooleanComparator(false) .

Please use the static factory instead whenever possible.

BooleanComparator
public BooleanComparator(boolean trueFirst)(Code)
	Creates a `BooleanComparator` that sorts `trueFirst` values before `!trueFirst` values. Please use the static factories instead whenever possible. Parameters: trueFirst - when `true`, sort `true` boolean values before `false`

Method Detail

compare
public int compare(Object obj1, Object obj2)(Code)
	Compares two arbitrary Objects. When both arguments are `Boolean`, this method is equivalent to BooleanComparator.compare(Boolean,Boolean) compare((Boolean)obj1,(Boolean)obj2) . When either argument is not a `Boolean`, this methods throws a ClassCastException . Parameters: obj1 - the first object to compare Parameters: obj2 - the second object to compare negative if obj1 is less, positive if greater, zero if equal throws: ClassCastException - when either argument is not `Boolean`

compare
public int compare(Boolean b1, Boolean b2)(Code)
	Compares two non-`null` `Boolean` objects according to the value of BooleanComparator.sortsTrueFirst() . Parameters: b1 - the first boolean to compare Parameters: b2 - the second boolean to compare negative if obj1 is less, positive if greater, zero if equal throws: NullPointerException - when either argument `null`

equals
public boolean equals(Object object)(Code)
	Returns `true` iff that Object is is a Comparator whose ordering is known to be equivalent to mine. This implementation returns `true` iff `that` is a BooleanComparator whose value of BooleanComparator.sortsTrueFirst() is equal to mine. Parameters: object - the object to compare to true if equal

getBooleanComparator
public static BooleanComparator getBooleanComparator(boolean trueFirst)(Code)
	Returns a BooleanComparator instance that sorts `trueFirst` values before `!trueFirst` values. Clients are encouraged to use the value returned from this method instead of constructing a new instance to reduce allocation and garbage collection overhead when multiple BooleanComparators may be used in the same virtual machine. Parameters: trueFirst - when `true`, sort `true` `Boolean`s before `false` a singleton BooleanComparator instance

getFalseFirstComparator
public static BooleanComparator getFalseFirstComparator()(Code)
	Returns a BooleanComparator instance that sorts `false` values before `true` values. Clients are encouraged to use the value returned from this method instead of constructing a new instance to reduce allocation and garbage collection overhead when multiple BooleanComparators may be used in the same virtual machine. the false first singleton BooleanComparator

getTrueFirstComparator
public static BooleanComparator getTrueFirstComparator()(Code)
	Returns a BooleanComparator instance that sorts `true` values before `false` values. Clients are encouraged to use the value returned from this method instead of constructing a new instance to reduce allocation and garbage collection overhead when multiple BooleanComparators may be used in the same virtual machine. the true first singleton BooleanComparator

hashCode
public int hashCode()(Code)
	Implement a hash code for this comparator that is consistent with BooleanComparator.equals(Object) equals . a hash code for this comparator.

sortsTrueFirst
public boolean sortsTrueFirst()(Code)
	Returns `true` iff I sort `true` values before `false` values. In other words, returns `true` iff BooleanComparator.compare(Boolean,Boolean) compare(Boolean.FALSE,Boolean.TRUE) returns a positive value. the trueFirst flag

Methods inherited from java.lang.Object

native protected Object clone() throws CloneNotSupportedException(Code)(Java Doc)
public boolean equals(Object obj)(Code)(Java Doc)
protected void finalize() throws Throwable(Code)(Java Doc)
final native public Class getClass()(Code)(Java Doc)
native public int hashCode()(Code)(Java Doc)
final native public void notify()(Code)(Java Doc)
final native public void notifyAll()(Code)(Java Doc)
public String toString()(Code)(Java Doc)
final native public void wait(long timeout) throws InterruptedException(Code)(Java Doc)
final public void wait(long timeout, int nanos) throws InterruptedException(Code)(Java Doc)
final public void wait() throws InterruptedException(Code)(Java Doc)

www.java2java.com | Contact Us

All other trademarks are property of their respective owners.