Post about Functional Interface in Java gives an overview of functional interfaces and how Lambda expressions can be used to implement functional interfaces. At the same time it doesn’t mean whenever you want to use lambda expression you will have to write your own custom functional interface. In Java there…
In this post we’ll see examples of Java java.util.function.BinaryOperator functional interface. BinaryOperator functional interface represents an operation upon two operands of the same type, returning a result of the same type as the operands. BinaryOperator extends java.util.function.BiFunction interface and provides behavior for the case where the operands and the result…
In this post we’ll see examples of Java java.util.function.UnaryOperator functional interface. UnaryOperator functional interface represents an operation on a single operand returning a result of the same type as its operand. UnaryOperator extends java.util.function.Function interface and provides behavior for the case where the operand and result are of the same…
In this post we’ll see examples of java.util.function.BiPredicate functional interface. BiPredicate functional interface represents a boolean valued function that takes two arguments and returns either true or false. Abstract method in this functional interface is- test(T t, U u)– This method evaluates the predicate on the passed arguments and returns…
In this post we’ll see examples of java.util.function.Predicate functional interface. Table of contents Methods in Predicate interface Predicate interface test() method example Predicate functional interface and() method example Predicate functional interface or() method example Predicate functional interface negate() method example Predicate functional interface in JDK Methods in Predicate interface Predicate…
In this post we’ll see examples of java.util.function.BiFunction functional interface. BiFunction functional interface represents an operation that accepts two arguments and produces a result. Abstract method in this functional interface is- R apply(T t, U u)– Where t is the first argument, u is the second function argument and R…
In this post we’ll see examples of java.util.function.Function functional interface. Function functional interface represents an operation that accepts one argument and produces a result. Abstract method in this functional interface is- R apply(T t)– Here T is the type of the argument passed to the method and it returns a…
In this post we’ll see examples of java.util.function.Supplier functional interface. Supplier functional interface represents an operation that accepts no argument and supplies a result. In Supplier interface there is one abstract method get() and there is no default or static interface method. If you are writing a Lambda expression that…
In this post we’ll see examples of Java BiConsumer functional interface. BiConsumer functional interface represents an operation that accepts two arguments and returns no result. Abstract method in this functional interface is accept(T t, U u) and there is also one default method andThen(BiConsumer<? super T,? super U> after). If…
In this post we’ll see examples of Java Consumer functional interface which is one of the built-in functional interface. Consumer functional interface represents an operation that accepts a single argument and returns no result. Abstract method in this functional interface is accept(T t) and there is also one default method…
