Web Reference: Oct 21, 2022 · There are some predefined functional interface in Java like Predicate, consumer, supplier etc. The return type of a Lambda function (introduced in JDK 1.8) is a also functional interface. The Functional Interface PREDICATE is defined in the java.util.function package. Represents a predicate (boolean-valued function) of one argument. This is a functional interface whose functional method is test(Object). Nov 19, 2022 · Usually Java 8 Predicate is used to apply a filter for a collection of objects. Let’s take a look at its main applications and widely used methods, as well as solve some practice problems.
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