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). So, where do you think, we can use these true/false returning functionsin day-to-day programming? We can use predicates to filter objects from a Collection after evaluating a condition on the objects (in the Collection) such that evaluation can result either in true or false. For example, we can use predicates in the following real-life usecases: 1...
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