Class JDKHooks

java.lang.Object
org.apache.commons.discovery.jdk.JDKHooks
Direct Known Subclasses:
JDK11Hooks, JDK12Hooks

public abstract class JDKHooks extends Object
JDK Hooks to extract properties/resources.
  • Constructor Details

    • JDKHooks

      protected JDKHooks()
      Hidden constructor, this class can't be directly instantiated.
  • Method Details

    • getJDKHooks

      public static final JDKHooks getJDKHooks()
      Return singleton object representing JVM hooks/tools. TODO: add logic to detect JDK level.
      Returns:
      The detected JDKHooks
    • getSystemProperty

      public abstract String getSystemProperty(String propName)
      Get the system property
      Parameters:
      propName - name of the property
      Returns:
      value of the property
    • getThreadContextClassLoader

      The thread context class loader is available for JDK 1.2 or later, if certain security conditions are met.
      Returns:
      The thread context class loader, if available. Otherwise return null.
    • getSystemClassLoader

      public abstract ClassLoader getSystemClassLoader()
      The system class loader is available for JDK 1.2 or later, if certain security conditions are met.
      Returns:
      The system class loader, if available. Otherwise return null.
    • getResources

      public abstract Enumeration<URL> getResources(ClassLoader loader, String resourceName) throws IOException
      Resolve resource with given names and make them available in the returned iterator.
      Parameters:
      loader - The class loader used to resolve resources
      resourceName - The resource name to resolve
      Returns:
      The iterator over the URL resolved resources
      Throws:
      IOException - if any error occurs while loading the resource