Thread: Trying to get values from arrays rather than hashcode

Hello,

I've been stuck on this homework assignment for some time now, and tried looking for possible solutions. The assignment goes like this...Write a Payroll class that uses the following arrays as fields:
employeeID - An array of seven integers to hold employee identification numbers.
The array should be initialized with the following numbers:
5658845 4520125 7895122 8777541
8451277 1302850 7580489
hours - An array of seven integers to hold the number of hours worked by each employee.
payRate - An array of seven doubles to hold each employee's hourly pay rate.
wages - An array of seven doubles to hold each employee's gross wages.
The class should relate the data in each array through the subscripts.
For example, the number in element 0 of the hours array should be the number of hours worked by the employee
whose identification number is stored in element 0 of the employeeID array.
That same employee's pay rate should be stored in element 0 of the payRate array.
In addition to the appropriate accessor and mutator methods,
the class should have a method that accepts an employee's identification number
as an argument and returns the gross pay for that employee.
Demonstrate the class in a complete program that displays each employee number
and asks the user to enter that employee's hours and pay rate.
It should then display each employee's identification number and gross wages.
Input Validation: Do not accept negative values for hours or numbers less than 6.0 for a pay rate.

My problem with this program is that everytime I try to print the employee ID's or the wages, I get hashcode or something like it (#[I1a77cdc or something like that). I tried using the toString method, but it lists all of the values, when I'm trying to display one at a time. Here is the code for the class:

// moduleArray class
public class moduleArray
{
   final int NUM_EMPLOYEES = 7;
   int[] employeeID = {5658845, 4520125, 7895122, 8777541, 8451277, 1302850, 7580489};
   int[] hours = new int[NUM_EMPLOYEES];
   double[] payRate = new double[NUM_EMPLOYEES];
   double[] wages = new double[NUM_EMPLOYEES];
 
   // setHours method
   public void setHours(int[] time)
   {
      hours = time;
   }
 
   // setPayRate method
   public void setPayRate(double[] pay)
   {
      payRate = pay;
   }
 
   //getEmployeeID method
   public int[] getEmployeeID()
   {
      return employeeID;
   }   
 
   // getWages method
   public double[] getWages()
   {
      wages = hours[] * payRate[];
 
      return wages;
   }
 
}

This is the demo program to list the ID's. I've been messing with it for some time, and right now I just want it to display values. Any help is appreciated!

import java.util.Scanner;
 
public class moduleArrayDemo
{
   public static void main(String[] args)
   {
      final int NUM_EMPLOYEES = 7;
      int[] ID = new int[NUM_EMPLOYEES];
      int[] time = new int[NUM_EMPLOYEES];
      double[] pay = new double[NUM_EMPLOYEES];
 
      Scanner keyboard = new Scanner(System.in);
 
      moduleArray[] employee = new moduleArray[NUM_EMPLOYEES];
 
      for (int i = 0; i < employee.length; i++)
         employee[i] = new moduleArray();         
 
      for (int i = 0; i < 7; i++)
         System.out.println(employee[i]);      
 
   }
 
}

print the employee ID's

To see the contents of an array when printing it, use the Arrays class's toString() method to format the array's contents:
System.out.println("an ID "+ java.util.Arrays.toString(theArrayName));

What println() statement are you talking about?

something like it (#[I1a77cdc or something like that).

You need to copy the exact text of the error message and paste it here.
"something like" is missing something important about the error.

Please edit your post and wrap your code with code tags:
[code=java]
YOUR CODE HERE
[/code]
to get highlighting and preserve formatting.

What do the methods: getEmployeeID() and getWages() return? It looks like they are returning an array instead of a single variable.
If you want to print the contents of an array see the suggestion in post#2

Looking at the names of the methods:
getEmployeeID() looks like it should return a single id
getWages() is ambiguous. It could return either a single wage or an array of wages. The s on the end makes it look plural. getWage() would be singular and return a single wage

Those two methods are defined to return an array. Change their definitions to return a single value and pass the index to the array to the method so it can use that index to get the value from the array.

The index for an array is an int. To pass an int variable to a method:
public int someMethod(int arrayIndex) {

The code that calls that method would have to compute or generate the index. Perhaps the index would be the control variable in a for loop.

The code you post does nothing. It just returns the exact same array that was passed to it as a parameter.

displays zero for each value.

Look back through the code to see where the values are coming from.
What does the getWage() method do with the int arg that is passed to it? If it is not used, it should be removed from the code. The getWage() method returns the value in the wage variable. Where is there a value assigned to the wage variable?