ApplicationInstance (IcedTea-Web: NetX )
Keywords: net.sourceforge.jnlp.runtime.ApplicationInstance class
Date: 2021-05-10

net.sourceforge.jnlp.runtime

## Class ApplicationInstance

- java.lang.Object
- - net.sourceforge.jnlp.runtime.ApplicationInstance

- Direct Known Subclasses:
    AppletInstance

      public class ApplicationInstance
      extends java.lang.Object

  Represents a running instance of an application described in a JNLPFile. This class provides a way to track the application's resources and destroy the application.

- - ### Constructor Summary

    Constructors
    Constructor and Description
    `ApplicationInstance(JNLPFile file, java.lang.ThreadGroup group, java.lang.ClassLoader loader)` Create an application instance for the file.

  - ### Method Summary

    All Methods Instance Methods Concrete Methods
    Modifier and Type | Method and Description
    --- | ---
    `void` | `addApplicationListener(ApplicationListener listener)` Add an Application listener
    `protected void` | `addWindow(java.awt.Window window)` Adds a window that this application opened.
    `void` | `destroy()` Stop the application and destroy its resources.
    `void` | `finalize()` Releases the application's resources before it is collected.
    `protected void` | `fireDestroyed()` Notify listeners that the application has been terminated.
    `sun.awt.AppContext` | `getAppContext()`
    `java.lang.ClassLoader` | `getClassLoader()` Returns the classloader.
    `JNLPFile` | `getJNLPFile()` Returns the jnlpfile on which is this application based
    `java.lang.ThreadGroup` | `getThreadGroup()` Returns the thread group.
    `java.lang.String` | `getTitle()` Returns the application title.
    `void` | `initialize()` Initialize the application's environment (installs environment variables, etc).
    `boolean` | `isRunning()` Returns whether the application is running.
    `boolean` | `isSigned()`
    `void` | `removeApplicationListener(ApplicationListener listener)` Remove an Application Listener

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

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

- - ### Constructor Detail

    - #### ApplicationInstance

          public ApplicationInstance(JNLPFile file,
                                     java.lang.ThreadGroup group,
                                     java.lang.ClassLoader loader)

      Create an application instance for the file. This should be done in the appropriate `ThreadGroup` only.
      Parameters:
        `file` - jnlpfile for which the instance do exists
        `group` - thread group to which it belongs
        `loader` - loader for this application

  - ### Method Detail

    - #### addApplicationListener

          public void addApplicationListener(ApplicationListener listener)

      Add an Application listener
      Parameters:
        `listener` - listener to be added

    - #### removeApplicationListener

          public void removeApplicationListener(ApplicationListener listener)

      Remove an Application Listener
      Parameters:
        `listener` - to be removed

    - #### fireDestroyed

          protected void fireDestroyed()

      Notify listeners that the application has been terminated.

    - #### initialize

          public void initialize()

      Initialize the application's environment (installs environment variables, etc).

    - #### finalize

          public void finalize()

      Releases the application's resources before it is collected. Only collectable if classloader and thread group are also collectable so basically is almost never called (an application would have to close its windows and exit its threads but not call JNLPRuntime.exit).
      Overrides:
        `finalize` in class `java.lang.Object`

    - #### getJNLPFile

          public JNLPFile getJNLPFile()

      Returns the jnlpfile on which is this application based
      Returns:
        JNLP file for this task.

    - #### getTitle

          public java.lang.String getTitle()

      Returns the application title.
      Returns:
        the title of this application

    - #### isRunning

          public boolean isRunning()

      Returns whether the application is running.
      Returns:
        state of application

    - #### destroy

          public void destroy()

      Stop the application and destroy its resources.

    - #### getThreadGroup

          public java.lang.ThreadGroup getThreadGroup()
                                               throws java.lang.IllegalStateException

      Returns the thread group.
      Returns:
        thread group of this application, unless it is stopped
      Throws:
        `java.lang.IllegalStateException` - if the app is not running

    - #### getClassLoader

          public java.lang.ClassLoader getClassLoader()
                                               throws java.lang.IllegalStateException

      Returns the classloader.
      Returns:
        the classloader of this application, unless it is stopped
      Throws:
        `java.lang.IllegalStateException` - if the app is not running

    - #### addWindow

          protected void addWindow(java.awt.Window window)

      Adds a window that this application opened. When the application is disposed, these windows will also be disposed.
      Parameters:
        `window` - to be added

    - #### isSigned

          public boolean isSigned()

      Returns:
        whether or not this application is signed.

    - #### getAppContext

          public sun.awt.AppContext getAppContext()

      Returns:
        application context of this instance

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