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

    java.lang.Object
      org.apache.tools.ant.ProjectComponent
          org.apache.tools.ant.Task
              org.apache.tools.ant.taskdefs.Exit

All Implemented Interfaces:
  java.lang.Cloneable

    public class Exit

extends Task

Exits the active build, giving an additional message if available. The `if` and `unless` attributes make the failure conditional -both probe for the named property being defined. The `if` tests for the property being defined, the `unless` for a property being undefined. If both attributes are set, then the test fails only if both tests are true. i.e.

    fail := defined(ifProperty) && !defined(unlessProperty)

A single nested`<condition>` element can be specified instead of using `if`/`unless` (a combined effect can be achieved using `isset` conditions).

Since:
  Ant 1.2

Field Summary

Fields inherited from class org.apache.tools.ant.Task
`target, taskName, taskType, wrapper`

Fields inherited from class org.apache.tools.ant.ProjectComponent
`description, location, project`

Constructor Summary
`Exit()`

Method Summary
`void` | `addText(java.lang.String msg)` Set a multiline message.
`ConditionBase` | `createCondition()` Add a condition element.
`void` | `execute()` Throw a `BuildException` to exit (fail) the build.
`void` | `setIf(java.lang.String c)` Only fail if a property of the given name exists in the current project.
`void` | `setMessage(java.lang.String value)` A message giving further information on why the build exited.
`void` | `setStatus(int i)` Set the status code to associate with the thrown Exception.
`void` | `setUnless(java.lang.String c)` Only fail if a property of the given name does not exist in the current project.

Methods inherited from class org.apache.tools.ant.Task
`bindToOwner, getOwningTarget, getRuntimeConfigurableWrapper, getTaskName, getTaskType, getWrapper, handleErrorFlush, handleErrorOutput, handleFlush, handleInput, handleOutput, init, isInvalid, log, log, log, log, maybeConfigure, perform, reconfigure, setOwningTarget, setRuntimeConfigurableWrapper, setTaskName, setTaskType`

Methods inherited from class org.apache.tools.ant.ProjectComponent
`clone, getDescription, getLocation, getProject, setDescription, setLocation, setProject`

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

Constructor Detail

### Exit

    public Exit()

Method Detail

### setMessage

    public void setMessage(java.lang.String value)

  A message giving further information on why the build exited.

  Parameters:
    `value` - message to output

### setIf

    public void setIf(java.lang.String c)

  Only fail if a property of the given name exists in the current project.

  Parameters:
    `c` - property name

### setUnless

    public void setUnless(java.lang.String c)

  Only fail if a property of the given name does not exist in the current project.

  Parameters:
    `c` - property name

### setStatus

    public void setStatus(int i)

  Set the status code to associate with the thrown Exception.

  Parameters:
    `i` - the `int` status

### execute

    public void execute()
                 throws BuildException

  Throw a `BuildException` to exit (fail) the build. If specified, evaluate conditions: A single nested condition is accepted, but requires that the `if`/`unless` attributes be omitted. If the nested condition evaluates to true, or the ifCondition is true or unlessCondition is false, the build will exit. The error message is constructed from the text fields, from the nested condition (if specified), or finally from the if and unless parameters (if present).

  Overrides:
    `execute` in class `Task`
  Throws:
    `BuildException` - on error

### addText

    public void addText(java.lang.String msg)

  Set a multiline message.

  Parameters:
    `msg` - the message to display

### createCondition

    public ConditionBase createCondition()

  Add a condition element.

  Returns:
    `ConditionBase`.
  Since:
    Ant 1.6.2

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