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please answer in java make comments on each line of the code show output on Eclipse console
5. Problem Statement Create a Priority Queue Integer with defult Comparator e Add some elements in the PriorityQueue object Remove the elements from Head e Remove the elements from PrioirityOQueue from Head Create a PriorityQueue Employee> class with Customized Comparator Add the objects of Employee class in the PriorityQueue object. Use the Comparator to sort the employees as per their salaries .
Expert Answer
IntegerQueue.java
import java.util.*;
public class IntegerQueue
{
public static void main(String[] args)
{
PriorityQueue<Integer> integerQueue=new PriorityQueue<Integer>();
integerQueue.add(5);
integerQueue.add(4);
integerQueue.add(2);
System.out.print(“Removing elements from head of queue:”);
while(integerQueue.size()!=0){
System.out.print(integerQueue.poll()+” “);
}
System.out.println();
}
}
Output:
EmployeeQueue.java
import java.util.*;
import java.io.*;
public class EmployeeQueue
{
static class Employee {
String name;
double salary;
Employee(String n,double s){
name=n;
salary=s;
}
}
static class EmployeePriority implements Comparator<Object> { public int compare(Object o1, Object o2) { Employee e1 = (Employee) o1; Employee e2 = (Employee) o2; return Double.compare(e1.salary, e2.salary); } }
public static void main(String[] args)
{
EmployeePriority priority=new EmployeePriority() ;
PriorityQueue<Employee> employeeQueue=new PriorityQueue<Employee>(10,priority);
Employee e1=new Employee(“Joerge”,25000.0);
Employee e2=new Employee(“Micheal”,5000.0);
Employee e3=new Employee(“David”,35000.0);
Employee e4=new Employee(“Jhon”,80000.0);
employeeQueue.add(e1);
employeeQueue.add(e2);
employeeQueue.add(e3);
employeeQueue.add(e4);
Employee temp;
System.out.println(“Employees sorted on salary:”);
while(!employeeQueue.isEmpty()){
temp=employeeQueue.poll();
System.out.println(“Name:”+temp.name+” “+”Salary:”+temp.salary);
}
System.out.println();
}
}
Output:
