Need help in Creating classes for my assignment

Question

Hi ,
I just started learning Java and have the following requirement
1)     Create the following classes/interfaces using descriptions:
a)     Account � data members : id:String, type:String, balance:BigDecimal, methods : Account, Account with String parameter, getId, getType, getBalance, setId, setType, setBalance, deposit, withdraw, compareTo, toString
b)     Bank � data members: instance:Bank, accountsMap:Map, customersMap:Map, customersAccount:Map, transactionMap:Map, methods: getAccountsMap, getCustormersMap, getCustomersAccounts, getTransactionMap, associate, addTransaction, getAccount, getCustomer, getAccounts, getTransactions, deposit, withdraw, transfer
c)     AccountDoesNotExistException, BankException, CustomerDoesNotExistException, InsufficientFundsException, InvalidAmountException, ZeroAmountException
2)     Create the util package using the following class
a)     AmountConverter � methods: fromDecimal(BigDecim     al), fromString(String)
In 1 b how to Create Instance:bank in the class .Also how to do part2.If possible can you help me with all the parts.Based on these I've some more to do.

Answer 1

Here is what I've come with
ACCOUNT.JAVA
import java.math.*;
public class Account {
private String Id;
private String Type;
private BigDecimal balance;
public Account( ) {
public Account(String Id,String Type,BigInteger balance) {
this.Id = Id;
this.Type = Type;
this.balance = balance;
public String getId( ) {
return Id;
public void setId(String Id) {
this.Id = Id;
public String getType( ) {
return Type;
public void setType(String Title) {
this.Title = Type;
public String getBalance( ) {
return id;
public void setBalance(String balance) {
this.balance = balance;
public String withdraw( ) {
public String deposit( ) {
public void setLastName(String LastName) {
this.id = id;
CUSTOMER.JAVA
public class Customer {
private String Id;
private String Title;
private String firstName;
private String lastName;
/** Construct a Customer with no data -- must be a no-argument */
public Customer( ) {
/** Construct a Customer with String Parameter */
public Customer(String Id,String Title,String firstName,String lastName) {
this.Id = Id;
this.Title = Title;
this.firstName = firstName;
this.lastName = lastName;
/** Return the Id. */
public String getId( ) {
return Id;
/** Set the Id */
public void setId(String Id) {
this.Id = Id;
/** Return the Title */
public String getTitle( ) {
return Title;
/** Set the Title */
public void setTitle(String Title) {
this.Title = Title;
/** Return the Firstname. */
public String getFirstName( ) {
return id;
/** Set the Firstname. */
public void setFirstName(String FirstName) {
this.id = id;
/** Return the Lastname. */
public String getLastName( ) {
return LastName;
/** Set the Lastname. */
public void setLastName(String LastName) {
this.id = id;
TRANSRECORD.JAVA
import java.util.*;
import java.math.*;
public class TransRecord implements Comparable{
private Date timeStamp;
private String transType;
private BigDecimal transAmt;
/** Construct a Trans Record with no data -- must be a no-argument */
public TransRecord( ) {
/** Construct a Customer with String Parameter */
public Customer(String transType,String transAmt) {
this.transType = transType;
this.transAmt = transAmt;
/** Return the timeStamp. */
public String gettimeStamp( ) {
return timeStamp;
/** Set the timeStamp */
public void settimeStamp(Date timeStamp) {
this.timeStamp = timeStamp;
/** Return the TransType */
public String getTransType( ) {
return TransType;
/** Set the TransType */
public void setTransType(String TransType) {
this.TransType = TransType;
/** Return the TransAmt */
public String getTransAmt( ) {
return TransAmt;
/** Set the TransAmt */
public void setTransAmt(String TransAmt) {
this.TransAmt = TransAmt;
/** Return a String representation. */
public String toString( ) {
/** CompareTo method */
public int compareTo(Object argument)
===============
ACCOUNTDOESNOTEXISTEXCEPTION.JAVA
public class AccountDoesNotExistException
               extends Exception
     public AccountDoesNotExistException()
          super();
     public AccountDoesNotExistException(String message)
          super(message);
=================
BANKEXCEPTION.JAVA
public class BankException
               extends Exception
     public BankException()
          super();
     public BankException(String message)
          super(message);
CUSTOMERDOESNOTEXISTEXCEPTION.JAVA
public class CustomerDoesNotExistException
               extends Exception
     public CustomerDoesNotExistException()
          super();
     public CustomerDoesNotExistException(String message)
          super(message);
ACCOUNTDOESNOTEXISTEXCEPTION.JAVA
public class AccountDoesNotExistException
               extends Exception
     public AccountDoesNotExistException()
          super();
     public AccountDoesNotExistException(String message)
          super(message);
INSUFFICIENTFUNDSEXCEPTION.JAVA
public class InsufficientFundsException
               extends Exception
     public InsufficientFundsException()
          super();
     public InsufficientFundsException(String message)
          super(message);
INVALIDAMOUNTEXCEPTION.JAVA
public class InvalidAmountException
               extends Exception
     public InvalidAmountException()
          super();
     public InvalidAmountException(String message)
          super(message);
ZEROAMOUNTEXCEPTION.JAVA
public class ZeroAmountException
               extends Exception
     public ZeroAmountException()
          super();
     public ZeroAmountException(String message)
          super(message);
I need help with Bank Class and the util class.Correct me If I've missed any exceptions or if any syntax is wrong
THanks
AKsh