ResourceExists (Apache Ant API)
Date: 2012-02-26

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

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

All Implemented Interfaces:
  java.lang.Cloneable, Condition

    public class ResourceExists

extends ProjectComponent
implements Condition

Condition that checks whether a given resource exists.

Since:
  Ant 1.8.0

Field Summary

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

Constructor Summary
`ResourceExists()`

Method Summary
`void` | `add(Resource r)` The resource to test.
`boolean` | `eval()` Is this condition true?
`protected void` | `validate()` Argument validation.

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

### ResourceExists

    public ResourceExists()

Method Detail

### add

    public void add(Resource r)

  The resource to test.

### validate

    protected void validate()
                     throws BuildException

  Argument validation.

  Throws:
    `BuildException`

### 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 condition is true
  Throws:
    `BuildException` - if an error occurs

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