Java.util.function.BiPredicate interface in Java with Examples

The BiPredicate<T, V> interface was introduced in JDK 8. This interface is packaged in java.util.function package. It operates on two objects and returns a predicate value based on that condition. It is a functional interface and thus can be used in lambda expression also.

public interface BiPredicate<T, V>

Methods:

1. test(): This function evaluates a conditional check on the two objects, and returns a boolean value denoting the outcome.

   boolean test(T obj, V obj1)

2. and(): This function applies the AND operation on the current object and the object received as argument, and returns the newly formed predicate. This method has a default implementation.

   default BiPredicate<T, V> and(BiPredicate<? super T, ? super V> other)

3. negate(): This function returns the inverse of the current predicate i.e reverses the test condition. This method has a default implementation.

   default BiPredicate<T, V> negate() 

4. or(): This function applies the OR operation on the current object and the object received as argument, and returns the newly formed predicate. This method has a default implementation.

   default BiPredicate<T, V> or(BiPredicate<? super T, ? super V> other)


Example:  


Output: 

true
false
true
true

 

Reference: https://docs.oracle.com/javase/8/docs/api/java/util/function/BiPredicate.html