Package org.apache.tools.ant.launch

# Class Launcher

java.lang.Object
org.apache.tools.ant.launch.Launcher

public class Launcher extends Object
This is a launcher for Ant.

Since:
  Ant 1.6

- ## Field Summary

  Fields
  Modifier and Type
  Field
  Description
  `static final String`
  `ANT_PRIVATEDIR`
  The directory name of the per-user ant directory.
  `static final String`
  `ANT_PRIVATELIB`
  The name of a per-user library directory.
  `static final String`
  `ANTHOME_PROPERTY`
  The Ant Home (installation) Directory property.
  `static final String`
  `ANTLIBDIR_PROPERTY`
  The Ant Library Directory property.
  `protected static final int`
  `EXIT_CODE_ERROR`
  Exit code on trouble
  `boolean`
  `launchDiag`
  launch diagnostics flag; for debugging trouble at launch time.
  `static final String`
  `MAIN_CLASS`
  The startup class that is to be run.
  `static final String`
  `USER_HOMEDIR`
  System property with user home directory.
  `static final String`
  `USER_LIBDIR`
  The location of a per-user library directory.

- ## Method Summary

  Modifier and Type
  Method
  Description
  `static void`
  `main(String[] args)`
  Entry point for starting command line Ant.

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

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

- ## Field Details

  - ### ANTHOME_PROPERTY

    public static final String ANTHOME_PROPERTY
    The Ant Home (installation) Directory property. "ant.home"
    See Also:
      - Constant Field Values

  - ### ANTLIBDIR_PROPERTY

    public static final String ANTLIBDIR_PROPERTY
    The Ant Library Directory property. "ant.library.dir"
    See Also:
      - Constant Field Values

  - ### ANT_PRIVATEDIR

    public static final String ANT_PRIVATEDIR
    The directory name of the per-user ant directory. ".ant"
    See Also:
      - Constant Field Values

  - ### ANT_PRIVATELIB

    public static final String ANT_PRIVATELIB
    The name of a per-user library directory. "lib"
    See Also:
      - Constant Field Values

  - ### USER_LIBDIR

    public static final String USER_LIBDIR
    The location of a per-user library directory.

    It's value is the concatenation of `ANT_PRIVATEDIR` with `ANT_PRIVATELIB`, with an appropriate file separator in between. For example, on Unix, it's `.ant/lib`.

  - ### MAIN_CLASS

    public static final String MAIN_CLASS
    The startup class that is to be run. "org.apache.tools.ant.Main"
    See Also:
      - Constant Field Values

  - ### USER_HOMEDIR

    public static final String USER_HOMEDIR
    System property with user home directory. "user.home"
    See Also:
      - Constant Field Values

  - ### EXIT_CODE_ERROR

    protected static final int EXIT_CODE_ERROR
    Exit code on trouble
    See Also:
      - Constant Field Values

  - ### launchDiag

    public boolean launchDiag
    launch diagnostics flag; for debugging trouble at launch time.

- ## Method Details

  - ### main

    public static void main(String[] args)
    Entry point for starting command line Ant.
    Parameters:
      `args` - commandline arguments