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## org.apache.tools.ant.taskdefs
Class ExecuteJava

    java.lang.Object
      org.apache.tools.ant.taskdefs.ExecuteJava

All Implemented Interfaces:
  java.lang.Runnable, TimeoutObserver

    public class ExecuteJava

extends java.lang.Object
implements java.lang.Runnable, TimeoutObserver

Execute a Java class.

Since:
  Ant 1.2

Constructor Summary
`ExecuteJava()`

Method Summary
`void` | `execute(Project project)` Execute the Java class against the specified Ant Project.
`int` | `fork(ProjectComponent pc)` Run the Java command in a separate VM, this does not give you the full flexibility of the Java task, but may be enough for simple needs.
`boolean` | `killedProcess()` Get whether the process was killed.
`void` | `run()` Run this ExecuteJava in a Thread.
`void` | `setClasspath(Path p)` Set the classpath to be used when running the Java class.
`void` | `setJavaCommand(Commandline javaCommand)` Set the Java "command" for this ExecuteJava.
`void` | `setOutput(java.io.PrintStream out)` Deprecated. since 1.4.x. manage output at the task level.
`void` | `setPermissions(Permissions permissions)` Set the permissions for the application run.
`void` | `setSystemProperties(CommandlineJava.SysProperties s)` Set the system properties to use when running the Java class.
`void` | `setTimeout(java.lang.Long timeout)` Set the timeout for this ExecuteJava.
`static void` | `setupCommandLineForVMS(Execute exe, java.lang.String[] command)` On VMS platform, we need to create a special java options file containing the arguments and classpath for the java command.
`void` | `timeoutOccured(Watchdog w)` Mark timeout as having occurred.

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

Constructor Detail

### ExecuteJava

    public ExecuteJava()

Method Detail

### setJavaCommand

    public void setJavaCommand(Commandline javaCommand)

  Set the Java "command" for this ExecuteJava.

  Parameters:
    `javaCommand` - the classname and arguments in a Commandline.

### setClasspath

    public void setClasspath(Path p)

  Set the classpath to be used when running the Java class.

  Parameters:
    `p` - an Ant Path object containing the classpath.

### setSystemProperties

    public void setSystemProperties(CommandlineJava.SysProperties s)

  Set the system properties to use when running the Java class.

  Parameters:
    `s` - CommandlineJava system properties.

### setPermissions

    public void setPermissions(Permissions permissions)

  Set the permissions for the application run.

  Parameters:
    `permissions` - the Permissions to use.
  Since:
    Ant 1.6

### setOutput

    public void setOutput(java.io.PrintStream out)

  Deprecated. since 1.4.x. manage output at the task level.

  Set the stream to which all output (System.out as well as System.err) will be written.

  Parameters:
    `out` - the PrintStream where output should be sent.

### setTimeout

    public void setTimeout(java.lang.Long timeout)

  Set the timeout for this ExecuteJava.

  Parameters:
    `timeout` - timeout as Long.
  Since:
    Ant 1.5

### execute

    public void execute(Project project)
                 throws BuildException

  Execute the Java class against the specified Ant Project.

  Parameters:
    `project` - the Project to use.
  Throws:
    `BuildException` - on error.

### run

    public void run()

  Run this ExecuteJava in a Thread.

  Specified by:
    `run` in interface `java.lang.Runnable`
  Since:
    Ant 1.5

### timeoutOccured

    public void timeoutOccured(Watchdog w)

  Mark timeout as having occurred.

  Specified by:
    `timeoutOccured` in interface `TimeoutObserver`
  Parameters:
    `w` - the responsible Watchdog.
  Since:
    Ant 1.5

### killedProcess

    public boolean killedProcess()

  Get whether the process was killed.

  Returns:
    `true` if the process was killed, false otherwise.
  Since:
    1.19, Ant 1.5

### fork

    public int fork(ProjectComponent pc)
             throws BuildException

  Run the Java command in a separate VM, this does not give you the full flexibility of the Java task, but may be enough for simple needs.

  Parameters:
    `pc` - the ProjectComponent to use for logging, etc.
  Returns:
    the exit status of the subprocess.
  Throws:
    `BuildException` - on error.
  Since:
    Ant 1.6.3

### setupCommandLineForVMS

    public static void setupCommandLineForVMS(Execute exe,
                                              java.lang.String[] command)

  On VMS platform, we need to create a special java options file containing the arguments and classpath for the java command. The special file is supported by the "-V" switch on the VMS JVM.

  Parameters:
    `exe` - the Execute instance to alter.
    `command` - the command-line.

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