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## org.apache.tools.ant
Class Diagnostics

    java.lang.Object
      |
      +--org.apache.tools.ant.Diagnostics

public final class Diagnostics
extends java.lang.Object

A little diagnostic helper that output some information that may help in support. It should quickly give correct information about the jar existing in ant.home/lib and the jar versions...

Since:
  Ant 1.5

Method Summary
`static void` | `doReport(java.io.PrintStream out)` Print a report to the given stream.
`static boolean` | `isOptionalAvailable()` Check if optional tasks are available.
`static java.io.File[]` | `listLibraries()` return the list of jar files existing in ANT_HOME/lib and that must have been picked up by Ant script.
`static void` | `main(java.lang.String[] args)` main entry point for command line
`static void` | `validateVersion()` Check if core and optional implementation version do match.

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Method Detail

### isOptionalAvailable

    public static boolean isOptionalAvailable()

  Check if optional tasks are available. Not that it does not check for implementation version. Use `validateVersion()` for this.

  Returns:
    `true` if optional tasks are available.

### validateVersion

    public static void validateVersion()
                                throws BuildException

  Check if core and optional implementation version do match.

  Throws:
    `BuildException` - if the implementation version of optional tasks does not match the core implementation version.

### listLibraries

    public static java.io.File[] listLibraries()

  return the list of jar files existing in ANT_HOME/lib and that must have been picked up by Ant script.

  Returns:
    the list of jar files existing in ant.home/lib or `null` if an error occurs.

### main

    public static void main(java.lang.String[] args)

  main entry point for command line

  Parameters:
    `args` - command line arguments.

### doReport

    public static void doReport(java.io.PrintStream out)

  Print a report to the given stream.

  Parameters:
    `out` - the stream to print the report to.

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