In today's fast-paced business environment, efficient data manipulation is key. When working with a collection of objects, filtering data based on specific criteria can save time and improve code readability. In this blog post, we will explore how to apply a filter to fetch employee names for a given department name using Java 8. We'll use a sample code snippet to demonstrate the concept. Filtering Employee Names by Department Name using Java 8: To filter employee names by department name using Java 8, we will first set up the data structure, and then apply the filter. Let's break it down step by step. Set up Data: We start by creating a list of departments and a list of employees. Each department has an ID and a name, and each employee has an ID, a name, and a department ID. Here's the sample code for setting up the data: java Department dep1 = new Department ( 1 , "HR" ); Department dep2 = new Department ( 2 , "Java" ); List<Departmen...
To find the second-highest salary from a list of employees using Java 8 streams, you can follow these steps: Create a list of employees with their salaries. Use Java 8 streams to sort the employees by salary in descending order. Skip the first element (which is the employee with the highest salary). Get the first element of the remaining stream (which is the employee with the second-highest salary). Example code: java import java.util.ArrayList; import java.util.List; class Employee { private String name; private double salary; public Employee (String name, double salary) { this .name = name; this .salary = salary; } public double getSalary () { return salary; } } public class SecondHighestSalary { public static void main (String[] args) { List<Employee> employees = new ArrayList <>(); employees.add( new Employee ( "John" , 60000.0 )); employees.add( new Employe...