com.xmlmind.util

Class JarUtil

java.lang.Object

com.xmlmind.util.JarUtil

public final class JarUtil
extends Object

A collection of utility functions (static methods) operating on JARs.

Method Summary

Modifier and Type	Method and Description
static URL[]	getClassPath(URL jarURL) Returns the URLs of the JARs listed in the Class-Path attribute of the manifest of a JAR.
static String	getClassPathAttribute(URL jarURL) Returns the Class-Path attribute of the manifest of a JAR.
static Map<String,String[]>	getServiceProviders(URL jarURL) Returns the service providers found in a JAR.

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

getClassPath

public static URL[] getClassPath(URL jarURL)
                          throws IOException

Returns the URLs of the JARs listed in the Class-Path attribute of the manifest of a JAR.

Parameters:

jarURL - the URL of the JAR

Returns:

the URLs of the JARs listed in the Class-Path attribute of the manifest or an empty array if the manifest or the Class-Path attribute were not found

Throws:

IOException - if an I/O error occurs while reading the JAR

getClassPathAttribute

public static String getClassPathAttribute(URL jarURL)
                                    throws IOException

Returns the Class-Path attribute of the manifest of a JAR.

Parameters:

jarURL - the URL of the JAR

Returns:

the Class-Path attribute of the manifest if any; null otherwise

Throws:

IOException - if an I/O error occurs while reading the JAR

getServiceProviders

public static Map<String,String[]> getServiceProviders(URL jarURL)
                                                throws IOException

Returns the service providers found in a JAR.

Parameters:

jarURL - the URL of the JAR

Returns:

a possibly empty map where a key is the name of a service and the value is an array of names of classes implementing this service

Throws:

IOException - if an I/O error occurs while reading the JAR