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JAVA 8 Functionalities

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public class Student { private int studentId; private String studentName; private int marks; private char grade; public Student() { // TODO Auto-generated constructor stub } public Student(int studentId, String studentName, int marks) { super(); this.studentId = studentId; this.studentName = studentName; this.marks = marks; calculateGrade(); } public String displayDetails() { return "Student [name=" + studentName + ", studentId=" + studentId + ", marks=" + marks + ", grade=" + grade + "]"; } private void calculateGrade() { if (marks <= 100 && marks >= 90) { grade = 'A'; } else if (marks <= 89 && marks >= 81) { grade = 'B'; } else if (marks <= 80 && marks >= 71) { grade = 'C'; } else if (marks <= 70 && marks >= 61) { grade = 'D'; } else if (marks <= 60 && marks >= 0) { grade = 'E'; } } }

public class Tester { public static void main(String[] args) { Student s1 = new Student(123, "John Smith", 95); System.out.println(s1.displayDetails()); } }

Output:

Student [name=John Smith, studentId=123, marks=95, grade=A]

There are five different ways to create an object in Java:
Java new Operator
Java Class.newInstance() method
Java newInstance() method of constructor
Java Object.clone() method
Java Object Serialization and Deserialization

class_name object_name = new class_name()