The document defines a Java implementation of bank account management, including handling insufficient funds through a custom exception class. It features an 'Account' class with methods for depositing and withdrawing funds, and a 'TestExceptions' class to demonstrate its functionality. Key functionalities include account creation, balance checks, and error handling for withdrawals exceeding the available balance.

1. public class InsufficientFundsException extends Exception{
InsufficientFundsException(double balance)
{
System.out.println("insufficient funds .... available balance : "+balance);
}
}
// Account.java
public class Account throws InsufficientFundsException{
private int acctNo;
private String owner;
private double balance;
public Account(){
acctNo = 00;
owner = " ";
balance= 0.0;
}
public Account(int ac, String own, double bal){
acctNo = ac;
owner = own;
balance = bal;
}
public void Deposit(double amount){
balance = balance + amount;
}
public void Withdraw (double amount){
try {
if(amount>balance)
{
throw new InsufficientFundsException(balance);
}
else
balance =balance - amount;
}
catch(InsufficientFundsException e)
{

2. System. out.println(e.printStackTrace());
}
}
public int getAcctNo() {
return acctNo;
}
public void setAcctNo(int ac) {
acctNo = ac;
}
public String getOwner() {
return owner;
}
public void setOwner(String own) {
owner = own;
}
public double getBalance() {
return balance;
}
public void setBalance(double bal) {
balance = bal;
}
public void display(){
System.out.println("Account Number = " + getAcctNo());
System.out.println("Account Owner = " + getOwner());
System.out.println("Account Balance = $" + getBalance());
System.out.println();
}
}
public class TestExceptions{
public static void main(String args []){
Account a1;
a1 = new Account(2222, "Jimmy Zulu", 1000);
a1.Deposit(100);
a1.display();
Account a2;
a2 = new Account();

3. a2.setAcctNo(3333);
a2.setOwner("John Mwemba");
a2.setBalance(500);
a2.Deposit(100);
a2.Withdraw(900);
a2.display();
}
}
Solution
public class InsufficientFundsException extends Exception{
InsufficientFundsException(double balance)
{
System.out.println("insufficient funds .... available balance : "+balance);
}
}
// Account.java
public class Account throws InsufficientFundsException{
private int acctNo;
private String owner;
private double balance;
public Account(){
acctNo = 00;
owner = " ";
balance= 0.0;
}
public Account(int ac, String own, double bal){
acctNo = ac;
owner = own;
balance = bal;
}
public void Deposit(double amount){
balance = balance + amount;
}
public void Withdraw (double amount){

4. try {
if(amount>balance)
{
throw new InsufficientFundsException(balance);
}
else
balance =balance - amount;
}
catch(InsufficientFundsException e)
{
System. out.println(e.printStackTrace());
}
}
public int getAcctNo() {
return acctNo;
}
public void setAcctNo(int ac) {
acctNo = ac;
}
public String getOwner() {
return owner;
}
public void setOwner(String own) {
owner = own;
}
public double getBalance() {
return balance;
}
public void setBalance(double bal) {
balance = bal;
}
public void display(){
System.out.println("Account Number = " + getAcctNo());
System.out.println("Account Owner = " + getOwner());
System.out.println("Account Balance = $" + getBalance());
System.out.println();

5. }
}
public class TestExceptions{
public static void main(String args []){
Account a1;
a1 = new Account(2222, "Jimmy Zulu", 1000);
a1.Deposit(100);
a1.display();
Account a2;
a2 = new Account();
a2.setAcctNo(3333);
a2.setOwner("John Mwemba");
a2.setBalance(500);
a2.Deposit(100);
a2.Withdraw(900);
a2.display();
}
}