Class ModuleReference

java.lang.Object
java.lang.module.ModuleReference
public abstract class ModuleReference extends Object
A reference to a module's content.

A module reference is a concrete implementation of this class that implements the abstract methods defined by this class. It contains the module's descriptor and its location, if known. It also has the ability to create a ModuleReader in order to access the module's content, which may be inside the Java run-time system itself or in an artifact such as a modular JAR file.

Since:
9
See Also:

  • Constructor Summary

    Constructors
    Modifier
    Constructor
    Description
    protected
    ModuleReference(ModuleDescriptor descriptor, URI location)
    Constructs a new instance of this class.

  • Method Summary

    Modifier and Type
    Method
    Description
    final ModuleDescriptor
    descriptor()
    Returns the module descriptor.
    final Optional<URI>
    location()
    Returns the location of this module's content, if known.
    abstract ModuleReader
    open()
    Opens the module content for reading.

    Methods declared in class Object

    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
    Modifier and Type
    Method
    Description
    protected Object
    clone()
    Answers a new instance of the same class as the receiver, whose slots have been filled in with the values in the slots of the receiver.
    boolean
    equals(Object o)
    Compares the argument to the receiver, and answers true if they represent the same object using a class specific comparison.
    protected void
    finalize()
    Deprecated, for removal: This API element is subject to removal in a future version.
    May cause performance issues, deadlocks and hangs.
    final Class<? extends Object>
    getClass()
    Answers the unique instance of java.lang.Class which represents the class of the receiver.
    int
    hashCode()
    Answers an integer hash code for the receiver.
    final void
    notify()
    Causes one thread which is waiting on the receiver to be made ready to run.
    final void
    notifyAll()
    Causes all threads which are waiting on the receiver to be made ready to run.
    String
    toString()
    Answers a string containing a concise, human-readable description of the receiver.
    final void
    wait()
    Causes the thread which sent this message to be made not ready to run pending some change in the receiver (as indicated by notify or notifyAll).
    final void
    wait(long time)
    Causes the thread which sent this message to be made not ready to run either pending some change in the receiver (as indicated by notify or notifyAll) or the expiration of the timeout.
    final void
    wait(long time, int frac)
    Causes the thread which sent this message to be made not ready to run either pending some change in the receiver (as indicated by notify or notifyAll) or the expiration of the timeout.

  • Constructor Details

    • ModuleReference

      protected ModuleReference(ModuleDescriptor descriptor, URI location)
      Constructs a new instance of this class.
      Parameters:
      descriptor - The module descriptor
      location - The module location or null if not known

  • Method Details

    • descriptor

      public final ModuleDescriptor descriptor()
      Returns the module descriptor.
      Returns:
      The module descriptor

    • location

      public final Optional<URI> location()
      Returns the location of this module's content, if known.
      Returns:
      The location or an empty Optional if not known

    • open

      public abstract ModuleReader open() throws IOException
      Opens the module content for reading.
      Returns:
      A ModuleReader to read the module
      Throws:
      IOException - If an I/O error occurs