Predicate和Consumer接口– Java 8中java.util.function包下的接口

Predicate和Consumer接口– Java 8中java.util.function包下的接口

public static Student updateStudentFee(Student student, Predicate<Student> predicate, 

Consumer<Student> consumer){

//Use the predicate to decide when to update the discount.

if ( predicate.test(student)){

    consumer.accept(student);

    return student;

}

}




public static void main(String[] args) {

Student student1 = new Student("Ashok","Kumar", 9.5);

tudent1 = updateStudentFee(student1,

//Lambda expression for Predicate interface

student -> student.grade > 8.5,

//Lambda expression for Consumer inerface

student -> student.feeDiscount = 30.0);