What?

The WizTools.org Commons Library (part of WizTools.org project) is a rich collection of commonly used convenience classes and data-structures for Java.

This is developed and maintained by Subhash Chandran.

Dependency

Gradle:

compile 'org.wiztools:commons-lib:0.4.2'

Maven:

<dependency>
    <groupId>org.wiztools</groupId>
    <artifactId>commons-lib</artifactId>
    <version>0.4.2</version>
</dependency>

This library does not depend on any external libraries.

Examples

Note: The examples are for bringing to your attention the features of this library. It is a small sample of the rich content in this library.

All classes are from the package:

import org.wiztools.commons.*;

Content of File

File f = ...;
FileUtil.getContentAsString(f, Charsets.UTF_8);

FileUtil.java

Non-RE based split()

String splitStr = ...;
String input = ...;
List<String> arr = StringUtil.explode(splitStr, input);

StringUtil.java

Encode XML/HTML special characters

String encoded = XmlEntityEncode.encode(input);

XmlEntityEncode.java

Java equivalent of PHP md5() function

String input = ...;
String hash = DigestUtil.md5hex(input.getBytes("UTF-8"));

DigestUtil.java

Map data-structure holding multiple values

MultiValueMap<String, String> m = new MultiValueMapArrayList<String, String>();

m.put("key1", "value1");
m.put("key1", "value2");

// Returns "value1" and "value2":
Collection<String, String> values =  m.get("key1");

MultiValueMap.java MultiValueMapArrayList.java

Service Locator To Load Implementation

// The relationship between MyInterface and MyInterfaceImplClass
// needs to be defined in the properties file
// wiztools-service-locator.properties and should be available in
// the classpath. The association is defined thus:
// com.package.MyInterface = com.package.MyInterfaceImplClass

MyInterface obj = Implementation.of(MyInterface.class);

Implementation.java