IsInstanceOf (Hamcrest)
Date: 2012-07-09

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## org.hamcrest.core
Class IsInstanceOf

    java.lang.Object
      org.hamcrest.BaseMatcher<T>
          org.hamcrest.DiagnosingMatcher<java.lang.Object>
              org.hamcrest.core.IsInstanceOf

All Implemented Interfaces:
  Matcher<java.lang.Object>, SelfDescribing

    public class IsInstanceOf

extends DiagnosingMatcher<java.lang.Object>

Tests whether the value is an instance of a class. Classes of basic types will be converted to the relevant "Object" classes

Constructor Summary
`IsInstanceOf(java.lang.Class<?> expectedClass)` Creates a new instance of IsInstanceOf

Method Summary
`static
`<T> Matcher<T>`
` | `any(java.lang.Class<T> type)` Creates a matcher that matches when the examined object is an instance of the specified `type`, as determined by calling the `Class.isInstance(Object)` method on that type, passing the the examined object.
`void` | `describeTo(Description description)` Generates a description of the object.
`static
`<T> Matcher<T>`
` | `instanceOf(java.lang.Class<?> type)` Creates a matcher that matches when the examined object is an instance of the specified `type`, as determined by calling the `Class.isInstance(Object)` method on that type, passing the the examined object.
`protected boolean` | `matches(java.lang.Object item, Description mismatch)`

Methods inherited from class org.hamcrest.DiagnosingMatcher
`describeMismatch, matches`

Methods inherited from class org.hamcrest.BaseMatcher
`_dont_implement_Matcher___instead_extend_BaseMatcher_, toString`

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait`

Constructor Detail

### IsInstanceOf

    public IsInstanceOf(java.lang.Class<?> expectedClass)

  Creates a new instance of IsInstanceOf

  Parameters:
    `expectedClass` - The predicate evaluates to true for instances of this class or one of its subclasses.

Method Detail

### matches

    protected boolean matches(java.lang.Object item,
                              Description mismatch)

  Specified by:
    `matches` in class `DiagnosingMatcher<java.lang.Object>`

### describeTo

    public void describeTo(Description description)

  Description copied from interface: `SelfDescribing`
  Generates a description of the object. The description may be part of a a description of a larger object of which this is just a component, so it should be worded appropriately.

  Parameters:
    `description` - The description to be built or appended to.

### instanceOf

    public static <T> Matcher<T> instanceOf(java.lang.Class<?> type)

  Creates a matcher that matches when the examined object is an instance of the specified `type`, as determined by calling the `Class.isInstance(Object)` method on that type, passing the the examined object.

  The created matcher assumes no relationship between specified type and the examined object.

  For example:

      assertThat(new Canoe(), instanceOf(Paddlable.class));

### any

    public static <T> Matcher<T> any(java.lang.Class<T> type)

  Creates a matcher that matches when the examined object is an instance of the specified `type`, as determined by calling the `Class.isInstance(Object)` method on that type, passing the the examined object.

  The created matcher forces a relationship between specified type and the examined object, and should be used when it is necessary to make generics conform, for example in the JMock clause `with(any(Thing.class))`

  For example:

      assertThat(new Canoe(), instanceOf(Canoe.class));

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