Predicate Predicate is a functional interface that is introduced in Java 8. It is present in the package java.util.function. It has a single abstract method test (T) method that returns boolean value.

A great deal of Java programming -- from conditional statements to iterative loops -- deals with the evaluation of true or false values. When you work with the JDK's Streams API and Lambda functions, ...

In Java, Predicate is a functional interface from the java.util.function package. It represents a predicate, which is a boolean-valued function that takes an argument and returns true or false.

Many developers get intimidated when they look at all the new APIs that accept lambda expressions as arguments, and wonder how they’ll ever figure out which Java function to use and what the proper ...