Package org.apache.tools.ant.taskdefs.condition

## Class Not

- java.lang.Object
- - org.apache.tools.ant.ProjectComponent
  - - org.apache.tools.ant.taskdefs.condition.ConditionBase
    - - org.apache.tools.ant.taskdefs.condition.Not

All Implemented Interfaces:
  `java.lang.Cloneable`, `Condition`

    public class Not
    extends ConditionBase
    implements Condition

<not> condition. Evaluates to true if the single condition nested into it is false and vice versa.

Since:
  Ant 1.4

### Field Summary

### Fields inherited from class org.apache.tools.ant.ProjectComponent

`description, location, project`

### Constructor Summary

Constructors
`Not()`

### Method Summary

All Methods Instance Methods Concrete Methods
`boolean` `eval()` Evaluate condition

### Methods inherited from class org.apache.tools.ant.taskdefs.condition.ConditionBase

`add, addAnd, addAvailable, addChecksum, addContains, addEquals, addFilesMatch, addHttp, addIsFalse, addIsFileSelected, addIsReference, addIsSet, addIsTrue, addNot, addOr, addOs, addSocket, addUptodate, countConditions, getConditions, getTaskName, setTaskName`

### Methods inherited from class org.apache.tools.ant.ProjectComponent

`clone, getDescription, getLocation, getProject, log, log, setDescription, setLocation, setProject`

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

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

### Constructor Detail

#### Not

    public Not()

### Method Detail

#### eval

    public boolean eval()
                 throws BuildException

Evaluate condition

Specified by:
  `eval` in interface `Condition`
Returns:
  true if the condition is true.
Throws:
  `BuildException` - if the condition is not configured correctly.