FindBugs™ 1.3.9

edu.umd.cs.findbugs.ba
Class URLClassPath

java.lang.Object
  extended by edu.umd.cs.findbugs.ba.URLClassPath
All Implemented Interfaces:
java.io.Serializable

public class URLClassPath
extends java.lang.Object
implements java.io.Serializable

A work-alike class to use instead of BCEL's ClassPath class. The main difference is that URLClassPath can load classfiles from URLs.

Author:
David Hovemeyer
See Also:
Serialized Form

Constructor Summary
URLClassPath()
          Constructor.
 
Method Summary
 void addURL(java.lang.String fileName)
          Add given filename/URL to the classpath.
 void close()
          Close all underlying resources.
 java.lang.String getClassPath()
          Return the classpath string.
static java.lang.String getFileExtension(java.lang.String fileName)
          Get the file extension of given fileName.
static java.lang.String getURLProtocol(java.lang.String urlString)
          Get the URL protocol of given URL string.
static boolean isArchiveExtension(java.lang.String fileExtension)
          Determine if given file extension indicates an archive file.
 org.apache.bcel.classfile.JavaClass lookupClass(java.lang.String className)
          Look up a class from the classpath.
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

URLClassPath

public URLClassPath()
Constructor. Creates a classpath with no elements.

Method Detail

addURL

public void addURL(java.lang.String fileName)
            throws java.io.IOException
Add given filename/URL to the classpath. If no URL protocol is given, the filename is assumed to be a local file or directory. Remote directories must be specified with a "/" character at the end of the URL.

Parameters:
fileName - filename or URL of codebase (directory or archive file)
Throws:
java.io.IOException - if entry is invalid or does not exist

getClassPath

public java.lang.String getClassPath()
Return the classpath string.

Returns:
the classpath string

lookupClass

public org.apache.bcel.classfile.JavaClass lookupClass(java.lang.String className)
                                                throws java.lang.ClassNotFoundException
Look up a class from the classpath.

Parameters:
className - name of class to look up
Returns:
the JavaClass object for the class
Throws:
java.lang.ClassNotFoundException - if the class couldn't be found

close

public void close()
Close all underlying resources.


getURLProtocol

public static java.lang.String getURLProtocol(java.lang.String urlString)
Get the URL protocol of given URL string.

Parameters:
urlString - the URL string
Returns:
the protocol name ("http", "file", etc.), or null if there is no protocol

getFileExtension

public static java.lang.String getFileExtension(java.lang.String fileName)
Get the file extension of given fileName.

Returns:
the file extension, or null if there is no file extension

isArchiveExtension

public static boolean isArchiveExtension(java.lang.String fileExtension)
Determine if given file extension indicates an archive file.

Parameters:
fileExtension - the file extension (e.g., ".jar")
Returns:
true if the file extension indicates an archive, false otherwise

FindBugs™ 1.3.9

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