Package edu.umd.cs.findbugs.ba

Class URLClassPath

  • All Implemented Interfaces:
    java.io.Serializable, java.lang.AutoCloseable
    public class URLClassPath
extends java.lang.Object
implements java.lang.AutoCloseable, 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

      Constructors 
      Constructor Description
      URLClassPath()
      Constructor.

    • Method Summary

      All Methods Static Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      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.
        Specified by:
        close in interface java.lang.AutoCloseable

      • 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