IsSet (Apache Ant API)

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## org.apache.tools.ant.taskdefs.condition
Class IsSet

    java.lang.Object
      org.apache.tools.ant.ProjectComponent
          org.apache.tools.ant.taskdefs.condition.IsSet

All Implemented Interfaces:
  java.lang.Cloneable, Condition

    public class IsSet

extends ProjectComponent
implements Condition

Condition that tests whether a given property has been set.

Since:
  Ant 1.5

Field Summary

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

Constructor Summary
`IsSet()`

Method Summary
`boolean` | `eval()` Is this condition true?
`void` | `setProperty(java.lang.String p)` Set the property attribute

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

### IsSet

    public IsSet()

Method Detail

### setProperty

    public void setProperty(java.lang.String p)

  Set the property attribute

  Parameters:
    `p` - the property name

### eval

    public boolean eval()
                 throws BuildException

  Description copied from interface: `Condition`
  Is this condition true?

  Specified by:
    `eval` in interface `Condition`
  Returns:
    true if the property exists
  Throws:
    `BuildException` - if the property attribute is not set

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