uk17

import java.util.Scanner;
class Customer {
String name;
String phoneNumber;
// Default constructor
Customer() {
name = "";
phoneNumber = "";
}
// Parameterized constructor
Customer(String n, String pn) {
name = n;
phoneNumber = pn;
}
}
class Depositor extends Customer {
int accno;
double balance;
// Default constructor
Depositor() {
accno = 0;
balance = 0.0;
}
// Parameterized constructor
Depositor(String n, String pn, int an, double b) {
super(n, pn);
accno = an;
balance = b;
}
}
class Borrower extends Depositor {
int loanNo;
double loanAmt;
// Default constructor
Borrower() {
loanNo = 0;
loanAmt = 0.0;
}
// Parameterized constructor
Borrower(String n, String pn, int an, double b, int ln, double la) {
super(n, pn, an, b);
loanNo = ln;
loanAmt = la;
}
}
public class Main {
public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
// Read in the number of customers
System.out.print("Enter the number of customers: ");
int n = scanner.nextInt();
// Create an array of Borrower objects
Borrower[] customers = new Borrower[n];
// Read in the details of each customer
for (int i = 0; i < n; i++) {
System.out.println("Enter details for customer " + (i+1) + ":");
System.out.print("Name: ");
String name = scanner.next();
System.out.print("Phone number: ");
String phoneNumber = scanner.next();
System.out.print("Account number: ");
int accno = scanner.nextInt();
System.out.print("Balance: ");
double balance = scanner.nextDouble();
System.out.print("Loan number: ");
int loanNo = scanner.nextInt();
System.out.print("Loan amount: ");
double loanAmt = scanner.nextDouble();
// Create a Borrower object for this customer and add it to the array
customers[i] = new Borrower(name, phoneNumber, accno, balance, loanNo,
loanAmt);
}
for (int i = 0; i < n; i++)
{
System.out.println("\nDetails for customer " + (i+1) + ":");
System.out.println("Name: " + customers[i].name);
System.out.println("Phone number: " + customers[i].phoneNumber);
System.out.println("Account number: " + customers[i].accno);
System.out.println("Balance: " + customers[i].balance);
System.out.println("Loan no.: " + customers[i].loanNo);
System.out.println("Loan Amount: " + customers[i].loanAmt);
}
}
}
Q2)
import javax.swing.;
import java.awt.;
import java.awt.event.*;
class TextBoxesAndButtons extends JFrame {
// Declare the text boxes and buttons
private JTextField textField1;
private JTextField textField2;
private JTextField textField3;
private JButton button1;
private JButton button2;
public TextBoxesAndButtons() {
// Set the frame properties
setTitle("Text Boxes and Buttons");
setSize(400, 200);
setLocationRelativeTo(null);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
// Create the text boxes and buttons
textField1 = new JTextField();
textField2 = new JTextField();
textField3 = new JTextField();
button1 = new JButton("Concatenate");
button2 = new JButton("Reverse");
// Add action listeners to the buttons
button1.addActionListener(new ConcatenateListener());
button2.addActionListener(new ReverseListener());
// Create a panel to hold the text boxes and buttons
JPanel panel = new JPanel();
panel.setLayout(new GridLayout(4, 2));
// Add the text boxes and buttons to the panel
panel.add(new JLabel("Enter a string:"));
panel.add(textField1);
panel.add(new JLabel("Enter another string:"));
panel.add(textField2);
panel.add(button1);
panel.add(button2);
panel.add(new JLabel("Result:"));
panel.add(textField3);
// Add the panel to the frame
add(panel);
}
// Action listener for the Concatenate button
class ConcatenateListener implements ActionListener {
public void actionPerformed(ActionEvent e) {
// Concatenate the strings and display the result in the third text box
String s1 = textField1.getText();
String s2 = textField2.getText();
textField3.setText(s1 + s2);
}
}
// Action listener for the Reverse button
class ReverseListener implements ActionListener {
public void actionPerformed(ActionEvent e) {
// Reverse the string and display the result in the third text box
String s = textField1.getText();
StringBuilder sb = new StringBuilder(s);
sb.reverse();
textField3.setText(sb.toString());
}
}
}
public class Main{
public static void main(String[] args) {
TextBoxesAndButtons frame = new TextBoxesAndButtons();
frame.setVisible(true);
}
}