NotNullPredicate (Apache Commons Collections 4.2 API)

java.lang.Object
- org.apache.commons.collections4.functors.NotNullPredicate<T>

All Implemented Interfaces:

Serializable, Predicate<T>
```
public final class NotNullPredicate<T>
extends Object
implements Predicate<T>, Serializable
```
Predicate implementation that returns true if the input is not null.

Since:

3.0

See Also:

Serialized Form

Field Summary

Fields
Modifier and Type Field Description

static Predicate INSTANCE
Singleton predicate instance

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`boolean`	`evaluate(T object)`	Evaluates the predicate returning true if the object does not equal null.
`static <T> Predicate<T>`	`notNullPredicate()`	Factory returning the singleton instance.

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

- Field Detail
  - INSTANCE
```
public static final Predicate INSTANCE
```
    Singleton predicate instance
- Method Detail
  - notNullPredicate
```
public static <T> Predicate<T> notNullPredicate()
```
    Factory returning the singleton instance.
    
    Type Parameters:
    
    T - the type that the predicate queries
    
    Returns:
    
    the singleton instance
    
    Since:
    
    3.1
  - evaluate
```
public boolean evaluate(T object)
```
    Evaluates the predicate returning true if the object does not equal null.
    
    Specified by:
    
    evaluate in interface Predicate<T>
    
    Parameters:
    
    object - the object to evaluate
    
    Returns:
    
    true if not null