ResourceExists (Apache Ant API)
Description: declaration: package: org.apache.tools.ant.taskdefs.condition, class: ResourceExists

Package 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

  Constructors
  Constructor | Description
  --- | ---
  `ResourceExists()` |

- ## Method Summary

  Modifier and Type | Method | Description
  --- | --- | ---
  `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 Details

  - ### ResourceExists

    public ResourceExists()

- ## Method Details

  - ### add

    public void add​(Resource r)
    The resource to test.
    Parameters:
      `r` - Resource

  - ### 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