Introduction: In modern Java programming, streams are a powerful tool for working with collections in a concise and efficient way. Removing Duplicates from Arrays using Java 8 Streams: Suppose you have an array of integers with duplicates, and you want to create a new array containing only distinct values then follow below steps Convert the array into a stream. Use the distinct() method to eliminate duplicates. Convert the stream back into an array using toArray() . import java.util.Arrays; public class RemoveDuplicatesFromArray { public static void main (String[] args) { Integer[] array = { 1 , 2 , 2 , 3 , 4 , 4 , 5 }; // Step 1: Convert the array into a stream. // Step 2: Use the `distinct()` method to eliminate duplicates. // Step 3: Convert the stream back into an array using `toArray()`. Integer[] distinctArray = Arrays.stream(array) .distinct() .toArray(Integer[]:: new ); Syst...
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...