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Predicate Functional Interface in Java 8 – Definition, Syntax & Real-World Use Cases
Java 8 introduced the concept of functional programming in Java through Lambda Expressions.To support this, Java provides a rich set of predefined functional interfaces . An Interface which contains single abstract method and any number of default and statics method .all predefined functional interface present in java.util.function package. Main Types of Predefined Functional Interfaces 1.Predicate : A predicate is a functional interface that represents a Boolean valued function of one argument . predicate takes one input and return either true or false . the Predicate functional interface is mainly used to represent business conditions or validation rules that return a boolean result and are frequently applied in filtering operations. A…
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Stream API in Java 8: Complete Guide with Examples
Stream api is a powerful abstraction for processing sequence of elements in a functional and declarative style . it allows developers to perform complex data manipulations such as filtering , mapping , sorting and reducing with minimal boilerplate code . Stream represent a pipeline of operations that can be executed either sequentially or in parallel , improving both readability and performance . Purpose of Stream Api The main goals of the stream api are . 1.Simplify data processing: Replace verbose loops with expressive operations 2.Enable Functional programing : use lambda expressions and method references 3. Improve Performance: Support parallel execution with parallel stream . Pipeline in Java Stream A stream…