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 and Description
`ResourceExists()`

### Method Summary

Methods
`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