FailablePredicate (Apache Commons Lang 3.11 API)

Type Parameters:

T - Predicate type.

E - Thrown exception.

Functional Interface:

This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.
```
@FunctionalInterface
public interface FailablePredicate<T,E extends Throwable>
```
A functional interface like Predicate that declares a Throwable.

Since:

3.11

Field Summary

Fields
Modifier and Type Field and Description

static FailablePredicate FALSE
FALSE singleton

static FailablePredicate TRUE
TRUE singleton

Fields
Modifier and Type	Field and Description
`static FailablePredicate`	`FALSE` FALSE singleton
`static FailablePredicate`	`TRUE` TRUE singleton

Method Summary

All Methods Static Methods Instance Methods Abstract Methods Default Methods
Modifier and Type	Method and Description
`default FailablePredicate<T,E>`	`and(FailablePredicate<? super T,E> other)` Returns a composed `FailablePredicate` like `Predicate.and(Predicate)`.
`static <T,E extends Throwable> FailablePredicate<T,E>`	`falsePredicate()` Returns The FALSE singleton.
`default FailablePredicate<T,E>`	`negate()` Returns a predicate that negates this predicate.
`default FailablePredicate<T,E>`	`or(FailablePredicate<? super T,E> other)` Returns a composed `FailablePredicate` like `Predicate.and(Predicate)`.
`boolean`	`test(T object)` Tests the predicate.
`static <T,E extends Throwable> FailablePredicate<T,E>`	`truePredicate()` Returns The FALSE TRUE.

- Field Detail
  - FALSE
```
static final FailablePredicate FALSE
```
    FALSE singleton
  - TRUE
```
static final FailablePredicate TRUE
```
    TRUE singleton
- Method Detail
  - falsePredicate
```
static <T,E extends Throwable> FailablePredicate<T,E> falsePredicate()
```
    Returns The FALSE singleton.
    
    Type Parameters:
    
    T - Predicate type.
    
    E - Thrown exception.
    
    Returns:
    
    The NOP singleton.
  - truePredicate
```
static <T,E extends Throwable> FailablePredicate<T,E> truePredicate()
```
    Returns The FALSE TRUE.
    
    Type Parameters:
    
    T - Predicate type.
    
    E - Thrown exception.
    
    Returns:
    
    The NOP singleton.
  - and
```
default FailablePredicate<T,E> and(FailablePredicate<? super T,E> other)
```
    Returns a composed FailablePredicate like Predicate.and(Predicate).
    
    Parameters:
    
    other - a predicate that will be logically-ANDed with this predicate.
    
    Returns:
    
    a composed FailablePredicate like Predicate.and(Predicate).
    
    Throws:
    
    NullPointerException - if other is null
  - negate
```
default FailablePredicate<T,E> negate()
```
    Returns a predicate that negates this predicate.
    
    Returns:
    
    a predicate that negates this predicate.
  - or
```
default FailablePredicate<T,E> or(FailablePredicate<? super T,E> other)
```
    Returns a composed FailablePredicate like Predicate.and(Predicate).
    
    Parameters:
    
    other - a predicate that will be logically-ORed with this predicate.
    
    Returns:
    
    a composed FailablePredicate like Predicate.and(Predicate).
    
    Throws:
    
    NullPointerException - if other is null
  - test
```
boolean test(T object)
      throws E extends Throwable
```
    Tests the predicate.
    
    Parameters:
    
    object - the object to test the predicate on
    
    Returns:
    
    the predicate's evaluation
    
    Throws:
    
    E - if the predicate fails
    
    E extends Throwable

Interface FailablePredicate<T,E extends Throwable>

Field Summary

Method Summary

Field Detail

FALSE

TRUE

Method Detail

falsePredicate

truePredicate

and

negate

or

test