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import java.util.*;
import java.io.*;

public class CableCompanyBilling
{
static Scanner console = new Scanner(System.in);

//Named constants - residential customers
static...

Also, could you show your new code?

As for always getting that value, it should change it you pass it a different value.

For instance,

businesscust(200, 200);

shouldn't, at least not...

put code here

Also, I have no idea how long the account numbers are, but

9000000000 may likely be invalid as ints go up to (2^32) - 1.

It may be better to take the account number in as a String if the...

Have formatted your code to make it more readable.

Also,

amountDue = businesscust(numberOfPremium, numberOfBasic);

It appears that you're using both numberOfPremiimum.... and numberOfBasic ....

You should probably pass 2 ints as parameters.

public static double businesscust(int premium, int basic)

Note, when you call residentcust, you have to have the parameter, though you don't need the data type again:

so for public double residentcust(int anInt);

you have residentcust(anInt);

For...

To pass a parameter, say an int, you do this:

public doubt methodName(int anInt)