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Answer 60a, 60b, 60c, 60d. Show code & output.

public class Employee { private int id; private String name; private int sal; public Employee(int id, String name, int sal) {

60a. public class Demo { public static void main(String[] args) { ArrayList<Employee> al = new ArrayList<Employee>(); al.add(

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Answer #1

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NOTE: WE MUST USE COMPARETO METHOD IN THE EMPLOYEE CLASS INORDER TO SORT ID

WE CAN ALSO USE LAMBDA FUNCTION BUT IT WORKS ONLY IN JAVA 8 OR ABOVE, HENCE I USED COMPARABLE AND COMPARATOR SEE THE OUTPUT BELOW


public class Employee implements Comparable<Employee>{

   private int id;
   private String name;
   private int sal;

   public Employee(int id, String name, int sal) {
       super();
       this.id = id;
       this.name = name;
       this.sal = sal;
   }

   public int getId() {
       return id;
   }

   public void setId(int id) {
       this.id = id;
   }

   public String getName() {
       return name;
   }

   public void setName(String name) {
       this.name = name;
   }

   public int getSal() {
       return sal;
   }

   public void setSal(int sal) {
       this.sal = sal;
   }

   @Override
   public int compareTo(Employee o) {
       return this.getId()-o.getId();
   }

}

0 e Console X <terminated> Demo (2) [Java A > sam 101 1eeee ************** ram 102 2eee ********** 9 Le shyam 103 3000 ******

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60 a.

USING COMPARABLE AND SORT

import java.util.*;

public class Demo{
  
    public static void main(String[] args) {
        ArrayList<Employee> al = new ArrayList<Employee>();
        al.add(new Employee(102, "ram", 2000));
        al.add(new Employee(103, "shyam", 3000));
        al.add(new Employee(101, "sam", 10000));
        al.add(new Employee(104, "sameer", 40000));

        Collections.sort(al);
      
        for (Employee employee : al) {
            System.out.println(employee.getName());
            System.out.println(employee.getId());
            System.out.println(employee.getSal());
            System.out.println("**************");
        }
    }

}

Console X <terminated> Demo (2) [Java Application > 2 4 56 6 sam 101 10000 88888 ******** 8 9 Demo.java X Employee.java 1 imp

USING COMPARATOR AND SORT

import java.util.*;

public class Demo {
  
   public static void main(String[] args) {
       ArrayList<Employee> al = new ArrayList<Employee>();
       al.add(new Employee(102, "ram", 2000));
       al.add(new Employee(103, "shyam", 3000));
       al.add(new Employee(101, "sam", 10000));
       al.add(new Employee(104, "sameer", 40000));
      
       al.sort(Comparator.comparing(Employee::getId));
       for (Employee employee : al) {
           System.out.println(employee.getName());
           System.out.println(employee.getId());
           System.out.println(employee.getSal());
           System.out.println("**************");
       }
   }
}

Employee.java *Demo.java X 10 import java.util.ArrayList; 2 import java.util.*; 3 4 public class Demo { public static void ma

///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

60.b

WITH COMPARABLE AND SORT

import java.util.*;

public class Demo{
  
    public static void main(String[] args) {
        ArrayList<Employee> al = new ArrayList<Employee>();
        al.add(new Employee(102, "ram", 2000));
        al.add(new Employee(103, "shyam", 3000));
        al.add(new Employee(101, "sam", 10000));
        al.add(new Employee(104, "sameer", 40000));

        Comparator c = Collections.reverseOrder();
        Collections.sort(al, c);
      
        for (Employee employee : al) {
            System.out.println(employee.getName());
            System.out.println(employee.getId());
            System.out.println(employee.getSal());
            System.out.println("**************");
        }
    }

}

10 2 Console X <terminated> Demo (2) [Java sameer 104 48eee ************ 56 6 7 Demo.java X Employee.java 1 import java.util.

USING COMPARATOR AND SORT

import java.util.*;

public class Demo {
  
    public static void main(String[] args) {
        ArrayList<Employee> al = new ArrayList<Employee>();
        al.add(new Employee(102, "ram", 2000));
        al.add(new Employee(103, "shyam", 3000));
        al.add(new Employee(101, "sam", 10000));
        al.add(new Employee(104, "sameer", 40000));
      
        al.sort(Comparator.comparing(Employee::getId).reversed());
      
        for (Employee employee : al) {
            System.out.println(employee.getName());
            System.out.println(employee.getId());
            System.out.println(employee.getSal());
            System.out.println("**************");
        }
    }
}

2 4 Employee.java Demo.java X 1 import java.util.*; 3 public class Demo { 50 public static void main(String[] args) { 6 Array

///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

60.c

import java.util.*;

public class Demo {
  
    public static void main(String[] args) {
        ArrayList<Employee> al = new ArrayList<Employee>();
        al.add(new Employee(102, "ram", 2000));
        al.add(new Employee(103, "shyam", 3000));
        al.add(new Employee(101, "sam", 10000));
        al.add(new Employee(104, "sameer", 40000));
      
        al.sort(Comparator.comparing(Employee::getSal));
      
        for (Employee employee : al) {
            System.out.println(employee.getName());
            System.out.println(employee.getId());
            System.out.println(employee.getSal());
            System.out.println("**************");
        }
    }
}

Employee.java Demo.java X 1 import java.util.*; 3 public class Demo { 2 4 50 6 7 public static void main(String[] args) { Arr

///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

60d.

import java.util.*;

public class Demo {
  
    public static void main(String[] args) {
        ArrayList<Employee> al = new ArrayList<Employee>();
        al.add(new Employee(102, "ram", 2000));
        al.add(new Employee(103, "shyam", 3000));
        al.add(new Employee(101, "sam", 10000));
        al.add(new Employee(104, "sameer", 40000));
      
        al.sort(Comparator.comparing(Employee::getSal).reversed());
      
        for (Employee employee : al) {
            System.out.println(employee.getName());
            System.out.println(employee.getId());
            System.out.println(employee.getSal());
            System.out.println("**************");
        }
    }
}

2 4 50 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 Employee.java Demo.java X 1 import java.util.*; 3 public class Demo { publ

///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

IF YOU HAVE ANY PROBLEM REGARDING THE SOLUTION PLEASE COMMENT BELOW I WILL HELP YOU

///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

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