| Name | Description | Type | Package | Framework |
| AbstractQuantifierPredicate | Abstract base class for quantification predicates, e. | Class | org.apache.commons.collections4.functors | Apache Commons |
| AllPredicate | Predicate implementation that returns true if all the predicates return true. | Class | org.apache.commons.collections4.functors | Apache Commons |
| AndPredicate | Predicate implementation that returns true if both the predicates return true. | Class | org.apache.commons.collections4.functors | Apache Commons |
| AnyPredicate | Predicate implementation that returns true if any of the predicates return true. | Class | org.apache.commons.collections4.functors | Apache Commons |
| CatchAndRethrowClosure | Closure that catches any checked exception and re-throws it as a FunctorException runtime exception. | Class | org.apache.commons.collections4.functors | Apache Commons |
| ChainedClosure | Closure implementation that chains the specified closures together. | Class | org.apache.commons.collections4.functors | Apache Commons |
| ChainedTransformer | Transformer implementation that chains the specified transformers together. | Class | org.apache.commons.collections4.functors | Apache Commons |
| CloneTransformer | Transformer implementation that returns a clone of the input object. | Class | org.apache.commons.collections4.functors | Apache Commons |
| ClosureTransformer | Transformer implementation that calls a Closure using the input object and then returns the input. | Class | org.apache.commons.collections4.functors | Apache Commons |
| ComparatorPredicate | Predicate that compares the input object with the one stored in the predicate using a comparator. | Class | org.apache.commons.collections4.functors | Apache Commons |
| ComparatorPredicate .Criterion | Class | org.apache.commons.collections4.functors.ComparatorPredicate | Apache Commons | |
| ConstantFactory | Factory implementation that returns the same constant each time. | Class | org.apache.commons.collections4.functors | Apache Commons |
| ConstantTransformer | Transformer implementation that returns the same constant each time. | Class | org.apache.commons.collections4.functors | Apache Commons |
| DefaultEquator | Default Equator implementation. | Class | org.apache.commons.collections4.functors | Apache Commons |
| EqualPredicate | Predicate implementation that returns true if the input is the same object as the one stored in this predicate by equals. | Class | org.apache.commons.collections4.functors | Apache Commons |
| ExceptionClosure | Closure implementation that always throws an exception. | Class | org.apache.commons.collections4.functors | Apache Commons |
| ExceptionFactory | Factory implementation that always throws an exception. | Class | org.apache.commons.collections4.functors | Apache Commons |
| ExceptionPredicate | Predicate implementation that always throws an exception. | Class | org.apache.commons.collections4.functors | Apache Commons |
| ExceptionTransformer | Transformer implementation that always throws an exception. | Class | org.apache.commons.collections4.functors | Apache Commons |
| FactoryTransformer | Transformer implementation that calls a Factory and returns the result. | Class | org.apache.commons.collections4.functors | Apache Commons |
| FalsePredicate | Predicate implementation that always returns false. | Class | org.apache.commons.collections4.functors | Apache Commons |
| ForClosure | Closure implementation that calls another closure n times, like a for loop. | Class | org.apache.commons.collections4.functors | Apache Commons |
| IdentityPredicate | Predicate implementation that returns true if the input is the same object as the one stored in this predicate. | Class | org.apache.commons.collections4.functors | Apache Commons |
| IfClosure | Closure implementation acts as an if statement calling one or other closure based on a predicate. | Class | org.apache.commons.collections4.functors | Apache Commons |
| IfTransformer | Transformer implementation that will call one of two closures based on whether a predicate evaluatesSince:4. | Class | org.apache.commons.collections4.functors | Apache Commons |
| InstanceofPredicate | Predicate implementation that returns true if the input is an instanceof the type stored in this predicate. | Class | org.apache.commons.collections4.functors | Apache Commons |
| InstantiateFactory | Factory implementation that creates a new object instance by reflection. | Class | org.apache.commons.collections4.functors | Apache Commons |
| InstantiateTransformer | Transformer implementation that creates a new object instance by reflection. | Class | org.apache.commons.collections4.functors | Apache Commons |
| InvokerTransformer | Transformer implementation that creates a new object instance by reflection. | Class | org.apache.commons.collections4.functors | Apache Commons |
| MapTransformer | Transformer implementation that returns the value held in a specified map using the input parameter as a key. | Class | org.apache.commons.collections4.functors | Apache Commons |
| NonePredicate | Predicate implementation that returns true if none of the predicates return true. | Class | org.apache.commons.collections4.functors | Apache Commons |
| NOPClosure | Closure implementation that does nothing. | Class | org.apache.commons.collections4.functors | Apache Commons |
| NOPTransformer | Transformer implementation that does nothing. | Class | org.apache.commons.collections4.functors | Apache Commons |
| NotNullPredicate | Predicate implementation that returns true if the input is not null. | Class | org.apache.commons.collections4.functors | Apache Commons |
| NotPredicate | Predicate implementation that returns the opposite of the decorated predicate. | Class | org.apache.commons.collections4.functors | Apache Commons |
| NullIsExceptionPredicate | Predicate implementation that throws an exception if the input is null. | Class | org.apache.commons.collections4.functors | Apache Commons |
| NullIsFalsePredicate | Predicate implementation that returns false if the input is null. | Class | org.apache.commons.collections4.functors | Apache Commons |
| NullIsTruePredicate | Predicate implementation that returns true if the input is null. | Class | org.apache.commons.collections4.functors | Apache Commons |
| NullPredicate | Predicate implementation that returns true if the input is null. | Class | org.apache.commons.collections4.functors | Apache Commons |
| OnePredicate | Predicate implementation that returns true if only one of the predicates return true. | Class | org.apache.commons.collections4.functors | Apache Commons |
| OrPredicate | Predicate implementation that returns true if either of the predicates return true. | Class | org.apache.commons.collections4.functors | Apache Commons |
| PredicateDecorator | Defines a predicate that decorates one or more other predicates. | Interface | org.apache.commons.collections4.functors | Apache Commons |
| PredicateTransformer | Transformer implementation that calls a Predicate using the input object and then returns the result. | Class | org.apache.commons.collections4.functors | Apache Commons |
| PrototypeFactory | Factory implementation that creates a new instance each time based on a prototype. | Class | org.apache.commons.collections4.functors | Apache Commons |
| StringValueTransformer | Transformer implementation that returns the result of calling String. | Class | org.apache.commons.collections4.functors | Apache Commons |
| SwitchClosure | Closure implementation calls the closure whose predicate returns true, like a switch statement. | Class | org.apache.commons.collections4.functors | Apache Commons |
| SwitchTransformer | Transformer implementation calls the transformer whose predicate returns true, like a switch statement. | Class | org.apache.commons.collections4.functors | Apache Commons |
| TransformedPredicate | Predicate implementation that transforms the given object before invokingSince:3. | Class | org.apache.commons.collections4.functors | Apache Commons |
| TransformerClosure | Closure implementation that calls a Transformer using the input object and ignore the result. | Class | org.apache.commons.collections4.functors | Apache Commons |
| TransformerPredicate | Predicate implementation that returns the result of a transformer. | Class | org.apache.commons.collections4.functors | Apache Commons |
| TruePredicate | Predicate implementation that always returns true. | Class | org.apache.commons.collections4.functors | Apache Commons |
| UniquePredicate | Predicate implementation that returns true the first time an object is passed into the predicate. | Class | org.apache.commons.collections4.functors | Apache Commons |
| WhileClosure | Closure implementation that executes a closure repeatedly until a condition is met, like a do-while or while loop. | Class | org.apache.commons.collections4.functors | Apache Commons |