LoaderUtils (Apache Ant API)

org.apache.tools.ant.util

## Class LoaderUtils

- java.lang.Object
- - org.apache.tools.ant.util.LoaderUtils

-     public class LoaderUtils
      extends java.lang.Object

  ClassLoader utility methods

- - ### Constructor Summary

    Constructors
    Constructor and Description
    `LoaderUtils()`

  - ### Method Summary

    Methods
    Modifier and Type | Method and Description
    --- | ---
    `static boolean` | `classExists(java.lang.ClassLoader loader, java.lang.String className)` Check if a classloader has a classname resource.
    `static java.lang.String` | `classNameToResource(java.lang.String className)` Return the resource name of a class name.
    `static java.io.File` | `getClassSource(java.lang.Class c)` Find the directory or jar file the class has been loaded from.
    `static java.lang.ClassLoader` | `getContextClassLoader()` JDK1.1 compatible access to set the context class loader.
    `static java.io.File` | `getResourceSource(java.lang.ClassLoader c, java.lang.String resource)` Find the directory or a give resource has been loaded from.
    `static boolean` | `isContextLoaderAvailable()` Indicates if the context class loader methods are available
    `static void` | `setContextClassLoader(java.lang.ClassLoader loader)` Set the context classloader

    - ### Methods inherited from class java.lang.Object

      `clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

- - ### Constructor Detail

    - #### LoaderUtils

          public LoaderUtils()

  - ### Method Detail

    - #### setContextClassLoader

          public static void setContextClassLoader(java.lang.ClassLoader loader)

      Set the context classloader
      Parameters:
        `loader` - the ClassLoader to be used as the context class loader on the current thread.

    - #### getContextClassLoader

          public static java.lang.ClassLoader getContextClassLoader()

      JDK1.1 compatible access to set the context class loader.
      Returns:
        the ClassLoader instance being used as the context classloader on the current thread. Returns null on JDK 1.1

    - #### isContextLoaderAvailable

          public static boolean isContextLoaderAvailable()

      Indicates if the context class loader methods are available
      Returns:
        true if the get and set methods dealing with the context classloader are available.

    - #### getClassSource

          public static java.io.File getClassSource(java.lang.Class c)

      Find the directory or jar file the class has been loaded from.
      Parameters:
        `c` - the class whose location is required.
      Returns:
        the file or jar with the class or null if we cannot determine the location.
      Since:
        Ant 1.6

    - #### getResourceSource

          public static java.io.File getResourceSource(java.lang.ClassLoader c,
                                       java.lang.String resource)

      Find the directory or a give resource has been loaded from.
      Parameters:
        `c` - the classloader to be consulted for the source
        `resource` - the resource whose location is required.
      Returns:
        the file with the resource source or null if we cannot determine the location.
      Since:
        Ant 1.6

    - #### classNameToResource

          public static java.lang.String classNameToResource(java.lang.String className)

      Return the resource name of a class name.
      Parameters:
        `className` - the name of the class to convert.
      Returns:
        the corresponding resource name.
      Since:
        Ant 1.7.0.

    - #### classExists

          public static boolean classExists(java.lang.ClassLoader loader,
                            java.lang.String className)

      Check if a classloader has a classname resource.
      Parameters:
        `loader` - the classloader to look it.
        `className` - the name of the class to look for.
      Returns:
        true if the classexists, false otherwise
      Since:
        Ant 1.7.0.