I need help with a programming assignment

Nov 30th, 2015
DreamIt
Category:
Programming
Price: $5 USD

Question description

The part that i need to add the exception are in bold.


import java.util.ArrayList;

import java.util.Scanner;

import java.io.*;

public class Main {

 static ArrayList<String> name = new ArrayList<String>();

 static ArrayList<String> id = new ArrayList<String>();

 static ArrayList<String> state_of_employee = new ArrayList<String>();

 static ArrayList<String> hourly_worked = new ArrayList<String>();

 static ArrayList<String> state_of_student_employee = new ArrayList<String>();

 static ArrayList<String> pay_rate = new ArrayList<String>();

 static Scanner in = new Scanner(System.in);

 private static Scanner inp;

 static StudentEmployee[] Obb = new StudentEmployee[50];  

 public static void main(String[] args) {

  inp = new Scanner(System.in);

  file_Operation();

  char choice;

  do{ 

   System.out.print("===================Menu=================");

    System.out.print("\nEnter:\n"+" S to Show.\n"+" A to Add.\n"+" R to Remove.\n"

      + " N to Sorted-by-name.\n"+ " T to Sorted-by-rate.\n"+" W to Student-isWorkStudy\n"

      + " H to Show-highest.\n"+" L to Show-lowest.\n"+" C to Change-rate id/name xxx\n"

      + " B to Rate x between y (bonus).\n"+" E to Exit.\n"

      + "Enter your choice : ");

         choice = inp.next().charAt(0);

   

   switch(choice){

   case 'S'  : Show(); break;

   case 'A'  : Add(); break;

   case 'R'  : Remove(); break;

   case 'W'  : StudentIsWorkStudy();break;

   case 'N'  : SortByName(); break;

   case 'T'  : SortByRate(); break;

   case 'H'  : ShowHighest(); break;

   case 'L'  : ShowLowest(); break;

   case 'C'  : ChangeRate(); break;

   case 'B'  : Rate(); break;

   case 'E'  : break;

   

   default : System.out.println("Error, Enter a valid key with capital letter"); break;

   }

     

  }while(choice != 'E'); 

  System.out.println("================================================");  

  System.out.print("Thank you");

 }

 public static void file_Operation()

 {

  String[] words = null;

  FileReader fr = null;

  BufferedReader br = null;

  String line = null ;

  try{

   fr = new FileReader("semployees.csv");

   br = new BufferedReader(fr);

   line = (String)br.readLine();

   while(line!=null){

   words = line.split(",");

   name.add(words[0]);

   id.add(words[1]);

   state_of_employee.add(words[2]);

   hourly_worked.add(words[3]);

   state_of_student_employee.add(words[4]);

   pay_rate.add(words[5]);

   line = (String)br.readLine();

   }

   br.close();

   fr.close();

  }catch(Exception ex){

   System.out.println(ex);

  }

 }

 public static void Show()

 {

  System.out.println("================================================");

  for ( int i = 0 ; i < name.size(); ++ i )

   {

   System.out.println(

     "name: "+ name.get(i) + "\nid: "+id.get(i)

     +"\nstate of employee: "+ state_of_employee.get(i) + "\nHourly Worked: "+hourly_worked.get(i)

     +"\nstate of student employee: "+ state_of_student_employee.get(i) + "\nPay Rate: "+pay_rate.get(i)

     );

   System.out.println("================================================");

   }

 }

 public static void Add()

 {   int n;

  System.out.print("Enter the number of person you want add : ");

  n = inp.nextInt();

  for(int i=0 ; i<n ; i++){

  System.out.print((i+1)+"-Enter Name: ");

  name.add((String)in.nextLine());

  System.out.print((i+1)+"-Enter ID: ");

  id.add((String)in.nextLine());

  in = new Scanner(System.in);

  System.out.print((i+1)+"-Enter state of employee: ");

  state_of_employee.add((String)in.nextLine());

  System.out.print((i+1)+"-Hourly Worked: ");

  hourly_worked.add((String)in.nextLine());

  System.out.print((i+1)+"-state of student employee: ");

  state_of_student_employee.add((String)in.nextLine());

  System.out.print((i+1)+"-Pay Rate: ");

  pay_rate.add((String)in.nextLine());

  System.out.println("================================================");

  }  

 }

 public static void Remove(){

   int nn;

   String empid;

   int index;

   System.out.print("Enter how many Employees you want ot remove: ");

   nn = inp.nextInt();

   for(int i=0 ; i<nn ; i++){

     System.out.print((i+1)+"-Enter ID of Employee to remove: ");

     empid = in.nextLine();    

     index = id.indexOf(empid);  

     name.remove(index);

     id.remove(index);

     hourly_worked.remove(index);

     state_of_student_employee.remove(index);

     state_of_employee.remove(index);

     pay_rate.remove(index);

     System.out.println("Deleted");

   }

 }

  public static void Rate(){

         int x=0;

         int y=0;

         System.out.println("================================================");

    System.out.println("Show the student employees that with the hourly rate between x and y");

    System.out.println("Note, Should x<y ");

    System.out.print("Enter x : ");

    in = new Scanner(System.in);

    x = in.nextInt();  

    System.out.print("Enter y : ");

    in = new Scanner(System.in);

    y = in.nextInt();      

    System.out.println("===Employees's rate between =="+x+" and "+y+"=========");

    for ( int i = 0 ; i < name.size(); ++ i ){          

    if(Integer.parseInt(hourly_worked.get(i)) >= x  && Integer.parseInt(hourly_worked.get(i)) <= y){

    System.out.println("name: "+ name.get(i));    

    }          

    }  

    System.out.println("================================================"); 

           

     }

   

  public static void ShowHighest(){  

     int max = Integer.parseInt(hourly_worked.get(0));

     int IndexHigh=0;    

     for ( int i = 0 ; i < name.size(); ++ i ){    

     if(Integer.parseInt(hourly_worked.get(i)) > max){      

     max = Integer.parseInt(hourly_worked.get(i));

     IndexHigh = i;

     }  

        }

     System.out.println("================================================"); 

     System.out.println("The student employee with highest hourly rate is: "+ name.get(IndexHigh));      

       }

  public static void ShowLowest (){  

   int min = Integer.parseInt(hourly_worked.get(0));

   int IndexLow=0;    

   for( int i = 0 ; i < name.size(); ++ i ){    

   if(Integer.parseInt(hourly_worked.get(i)) < min){      

   min = Integer.parseInt(hourly_worked.get(i));

   IndexLow = i;

     }  

         }

   System.out.println("================================================"); 

   System.out.println("The student employee with lowest hourly rate is: "+ name.get(IndexLow));      

  } 

  public static void StudentIsWorkStudy(){

   System.out.println("All the students that are eligible for work study status");  

   for ( int i = 0 ; i < name.size(); ++ i ){    

      if(Boolean.parseBoolean(state_of_student_employee.get(i))){

   System.out.println("Name : "+name.get(i));  

      }

    }      

    }

   

  public static void ChangeRate(){

   int idd=0;

   System.out.println("================================================");

   System.out.print("Enter the id of the Employee that's you want to change here rate: ");

   in = new Scanner(System.in);

   idd = in.nextInt(); 

   int i=0;

   while(idd != Integer.parseInt(id.get(i))){          

   i++; }        

   double newPayrate;

   System.out.print("Enter the new rate : ");    

   in = new Scanner(System.in);

   newPayrate = in.nextDouble();    

   pay_rate.set(i, Double.toString(newPayrate));

   System.out.println("Changed");

  } 

  public static void SortByName(){

    String temp;

    String names[] = new String[name.size()];

    for(int i = 0; i < name.size(); i++){

      names[i] =  name.get(i);

    }

    for (int i = 0; i < name.size(); i++) {

      for (int j = i + 1; j < name.size(); j++) 

      {

        if (names[i].compareTo(names[j])>0) 

        {

          temp = names[i];

          names[i] = names[j];

          names[j] = temp;

        }

      }

    }

    System.out.println("================================================");        

    for ( int i = 0 ; i < name.size(); ++ i ){

      System.out.println("name: "+ names[i]);}

      System.out.println("================================================");      

    } 

  public static void SortByRate(){  

    Double temp;

    Double rate[] = new Double[name.size()];

    for(int i = 0; i < name.size(); i++){

      rate[i] = Double.parseDouble(pay_rate.get(i));

    }

    for (int i = 0; i < name.size(); i++) {

      for (int j = i + 1; j < name.size(); j++) {

    if (rate[i].compareTo(rate[j])>0) {

      temp = rate[i];

      rate[i] = rate[j];

      rate[j] = temp;

    }

      }

    }

    System.out.println("================================================");

    for ( int i = 0 ; i < name.size(); ++ i ){

      System.out.println("Rate : "+ rate[i]);}

    System.out.println("================================================");

  } 

}

     


Tutor Answer

(Top Tutor) Daniel C.
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School: Carnegie Mellon University
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