Question

Java

need to create an array that keeps track of the number of employees that where absent each day. Needs to be large enough to store a full month of date.

Ex) on the first day of the month, 1 employee was absent; second day of the month only 2 absence and this information does not need to but put in by user.

Prompt the user to input a number to display the number of absences on the day they entered.

Answer 1

hi

please find below java code for your question. Store below code in Employee.java file and run the program. it will ask to enter data for entire month and will display for given day.

in Employee.java put..

import java.util.Scanner;

public class Employee {
    //array to hold absence data
    int absenceData[];
    //scanner to read data from console
    Scanner scan =new Scanner(System.in);
   
    //default constructor
    public Employee(){}
   
    //method to input absence data into array
    public void enterAbsesnceData()
    {
        //define array to hold data for 30 days
        absenceData=new int[30];
        //read and store data into array
        for(int i=0;i<30;i++ ){
           
            System.out.println("Enter no of employee absent on day "+(i+1));
            absenceData[i]=scan.nextInt();
        }
    }
   
    //method to display data for entered day
    public void DisplayAbsenceData()
    {
        int day=0;
        //ask user to enter day
        System.out.println("Enter day to display data(1-30)");
        day=scan.nextInt();
        System.out.println("Number of enployee absent:"+absenceData[day-1]);
    }
   
    /*method to display option for different operations.
    this method call differnt mehod based on choice of user.
    */
    public void displayOption(){
        int option=0;
        while(option!=3){
        System.out.println("\nplease choose an option");
       System.out.println("1.enter data");
        System.out.println("2.display data");
        System.out.println("3. exit");
        option=scan.nextInt();
       
        switch(option){
           
            case 1:
                this.enterAbsesnceData();
                break;
               
            case 2:
                this.DisplayAbsenceData();
               
            case 3:
                break;
               
            default:
                System.out.println("please enter a valid option");
           
            }
        }
       
    }
       
   
    //driver method
    public static void main(String[] args){
        //define employee object to call displayOptionMethod.
        Employee e=new Employee();
       
        //call displayOption method
        e.displayOption();
      
       
    }
   
   
   
   
}

output:

Enter no of employee absent on day 28 Enter no of employee absent on day 2s Enter no of employee absent on day 30 please choose an optiorn 1.enter data 2.display data 3. exit Enter day to display data(1-30) 12 Number of enployee absent:4 please choose an optiorn 1.enter data 2.display data 3. exit BUILD SUCCESSFUL (total time 42 seconds)