t_implement_Matcher___instead_extend_BaseMatcher_\(\))
, [ toString ](../../../org/hamcrest/BaseMatcher.html#toString\(\)) `  
**Methods inherited from class java.lang.Object**  
---  
` clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait,
wait `  
  
**Constructor Detail**  
---  
  
###  IsEventFrom

    
    
    public **IsEventFrom**(java.lang.Class<?> eventClass,
                       java.lang.Object source)

**Method Detail**  
---  
  
###  matchesSafely

    
    
    public boolean **matchesSafely**(java.util.EventObject item,
                                 [Description](../../../org/hamcrest/Description.html "interface in org.hamcrest") mismatchDescription)

     **Description copied from class:` [ TypeSafeDiagnosingMatcher ](../../../org/hamcrest/TypeSafeDiagnosingMatcher.html#matchesSafely\(T, org.hamcrest.Description\)) ` **
     Subclasses should implement this. The item will already have been checked for the specific type and will never be null. 

    

**Specified by:**      ` [ matchesSafely
](../../../org/hamcrest/TypeSafeDiagnosingMatcher.html#matchesSafely\(T,
org.hamcrest.Description\)) ` in class ` [ TypeSafeDiagnosingMatcher
](../../../org/hamcrest/TypeSafeDiagnosingMatcher.html "class in
org.hamcrest") <java.util.EventObject> `

    

* * *

###  describeTo

    
    
    public void **describeTo**([Description](../../../org/hamcrest/Description.html "interface in org.hamcrest") description)

     **Description copied from interface:` [ SelfDescribing ](../../../org/hamcrest/SelfDescribing.html#describeTo\(org.hamcrest.Description\)) ` **
     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.

* * *

###  eventFrom

    
    
    public static [Matcher](../../../org/hamcrest/Matcher.html "interface in org.hamcrest")<java.util.EventObject> **eventFrom**(java.lang.Class<? extends java.util.EventObject> eventClass,
                                                           java.lang.Object source)

     Creates a matcher of ` EventObject ` that matches any object derived from  eventClass  announced by  source  . 

For example:

    
    
    assertThat(myEvent, is(eventFrom(PropertyChangeEvent.class, myBean)))

    

**Parameters:**      ` eventClass ` \- the class of the event to match on
` source ` \- the source of the event

* * *

###  eventFrom

    
    
    public static [Matcher](../../../org/hamcrest/Matcher.html "interface in org.hamcrest")<java.util.EventObject> **eventFrom**(java.lang.Object source)

     Creates a matcher of ` EventObject ` that matches any EventObject announced by  source  . 

For example:

    
    
    assertThat(myEvent, is(eventFrom(myBean)))

    

**Parameters:**      ` source ` \- the source of the event

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