Help Array Objects Bank account

[creativeguitar]

Alright ill apreciate some help, so here is the exercise and also what i have done so far. im a little bit lost on how to keep going. 

Problem Description:
1. Create Minimal Account Class for containment in the Bank container.

2. Define a Bank Class to hold Account Objects
    a) Has a data structure and attributes to manage the Accounts
       on the Heap.
    b) A Constructor which creates a Bank of any size at runtime.
    c) Methods to open(add) account object, close(remove) account object,
       show "Account Summary", make a deposit & make a withdrawal
       wrapper methods, add existing account from outside the bank,
       and  other helper methods that would be appropriate.

 3. Write a test program to create a Bank object at runtime, add Account
    objects, verify your Methods, and remove Account objects,

Bank.java

    package javalab2;

    public class Bank
    {

    private Account[] a;
    private int cnt;
    static Bank [] b1;

    public Bank(int n)
    {
    this.a = new Account [n];
    }

    public boolean openAcct(double amt)
    {
        boolean rc = false;

        if (cnt <a.length)
            for (int i=0; i <a.length && !rc; i++)
                if (a[i] ==null)
                {
                    a[i] = new Account (amt);
                    cnt++;
                    rc = true;
                }
        return rc;
    }
    public Account getAcct(int n)
    {
        if ( cnt==0) return null;
                for (int i=0; i <a.length; i++)
                    if (a[i] != null)
                        if (a[i].getID() == n)
                            return new Account (a[i]);
                return null;


    }
    }

Account.java

    package javalab2;

    public class Account
    {
    private int id;
    private double bal;
    private static int nxtID = 99;

    private static int getNextID()
    {
    }

    public Account(double b)
    {
    this.bal += b;
    }
    public Account(Account r)
    {
    }
    public int getID()
    {
     return id;
    }
    public double getBal()
    {
     return bal;
    }
    }//end class Account

[stultuske]

ok...

so, you have code ... now what is the actual question?
preferably, don't give your variables names like
a
give it a meaningfull name, so that the code becomes more clear and readable.

[creativeguitar]

the questions is: based on the exercise: what should i do next, most of the stuff thats on this code, i got it from my professor, i would just like to know what constructors im missing on each class (if not how do I write the ones that are empty) and how do I write the tester class

[jwenting]

we're not here to do your homework for you, kid.
And if you'd paid attention in class you should easily be able to do all that yourself.