slip No.17

1.
import java.util.Scanner;

class Customer {
 String name;
 String phoneNumber;
 void readCustomer(Scanner sc) {
 System.out.print("Enter Customer Name: ");
 name = sc.nextLine();
 System.out.print("Enter Phone Number: ");
 phoneNumber = sc.nextLine();
 }
 void displayCustomer() {
 System.out.println("Customer Name : " + name);
 System.out.println("Phone Number : " + phoneNumber);
 }
}

class Depositor extends Customer {
 String accno;
double balance;
 void readDepositor(Scanner sc) {
 readCustomer(sc);
 System.out.print("Enter Account Number: ");
 accno = sc.nextLine();
 System.out.print("Enter Balance: ");
 balance = sc.nextDouble();
 sc.nextLine(); // consume newline
 }
 void displayDepositor() {
 displayCustomer();
 System.out.println("Account Number : " + accno);
 System.out.println("Balance : " + balance);
 }
}

class Borrower extends Depositor {
 String loanNo;
 double loanAmt;
 void readBorrower(Scanner sc) {
 readDepositor(sc);
 System.out.print("Enter Loan Number: ");
 loanNo = sc.nextLine();
 System.out.print("Enter Loan Amount: ");
 loanAmt = sc.nextDouble();
 sc.nextLine(); 
 }
 void displayBorrower() {
 displayDepositor();
 System.out.println("Loan Number : " + loanNo);
 System.out.println("Loan Amount : " + loanAmt);
 System.out.println("-----------------------------------");
 }
}

public class CustomerDetails {
 public static void main(String[] args) {
 Scanner sc = new Scanner(System.in);
System.out.print("Enter number of customers: ");
 int n = sc.nextInt();
 sc.nextLine(); 
 Borrower[] customers = new Borrower[n];
 
 for (int i = 0; i < n; i++) {
 System.out.println("\nEnter details for Customer " + (i + 1));
 customers[i] = new Borrower();
 customers[i].readBorrower(sc);
 }
 // Display details
 System.out.println("\n--- Customer Details ---");
 for (int i = 0; i < n; i++) {
 System.out.println("\nCustomer " + (i + 1));
 customers[i].displayBorrower();
 }
 sc.close();
 }
}


2.
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
public class StringOperations extends JFrame implements ActionListener {
 JTextField text1, text2, text3;
 JButton concatBtn, reverseBtn;
 public StringOperations() {
setTitle("String Operations");
 setSize(400, 200);
 setLayout(new FlowLayout());
 setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
 
 add(new JLabel("Enter First String:"));
 text1 = new JTextField(20);
 add(text1);
 add(new JLabel("Enter Second String:"));
 text2 = new JTextField(20);
 add(text2);
 add(new JLabel("Result:"));
 text3 = new JTextField(20);
 text3.setEditable(false); 
 add(text3);
 
 concatBtn = new JButton("Concatenate");
 reverseBtn = new JButton("Reverse");
 add(concatBtn);
 add(reverseBtn);
 
 concatBtn.addActionListener(this);
 reverseBtn.addActionListener(this);
 setVisible(true);
 }
 
 public void actionPerformed(ActionEvent e) {
 if (e.getSource() == concatBtn) {
 String s1 = text1.getText();
 String s2 = text2.getText();
 text3.setText(s1 + s2); 
 } else if (e.getSource() == reverseBtn) {
 String s1 = text1.getText();
 StringBuilder sb = new StringBuilder(s1);
 text3.setText(sb.reverse().toString());
 }
}
 public static void main(String[] args) {
 new StringOperations();
 }
}

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