Java 8 — Real-Time Coding Interview Questions and Answers

As I have already shared the Java 8 Coding and Programming Interview Questions and Answers and questions on Stream API in Java 8 Stream API Interview Questions and Answers. Keeping in mind that, you already know the basics of using the Java 8 concepts. In this article let us try some real-time questions.

We will use the below Employee class employeeList as an example to solve the questions.

public class Employee {

    int id;
    String name;
    int age;
    String gender;
    String department;
    int yearOfJoining;
    double salary;

    public Employee(int id, String name, int age, String gender, String department, int yearOfJoining, double salary) 
    {
        this.id = id;
        this.name = name;
        this.age = age;
        this.gender = gender;
        this.department = department;
        this.yearOfJoining = yearOfJoining;
        this.salary = salary;
    }
    public int getId() 
    {
        return id;
    }
    public String getName() 
    {
        return name;
    }
    public int getAge() 
    {
        return age;
    }
    public String getGender() 
    {
        return gender;
    }
    public String getDepartment() 
    {
        return department;
    }
    public int getYearOfJoining() 
    {
        return yearOfJoining;
    }
    public double getSalary() 
    {
        return salary;
    }
    @Override
    public String toString() 
    {
        return "Id : "+id
                +", Name : "+name
                +", age : "+age
                +", Gender : "+gender
                +", Department : "+department
                +", Year Of Joining : "+yearOfJoining
                +", Salary : "+salary;
    }

    public static void main(String[] args) {
        List<Employee> employeeList = new ArrayList<Employee>();

        employeeList.add(new Employee(111, "Jiya Brein", 32, "Female", "HR", 2011, 25000.0));
        employeeList.add(new Employee(122, "Paul Niksui", 25, "Male", "Sales And Marketing", 2015, 13500.0));
        employeeList.add(new Employee(133, "Martin Theron", 29, "Male", "Infrastructure", 2012, 18000.0));
        employeeList.add(new Employee(144, "Murali Gowda", 28, "Male", "Product Development", 2014, 32500.0));
        employeeList.add(new Employee(155, "Nima Roy", 27, "Female", "HR", 2013, 22700.0));
        employeeList.add(new Employee(166…