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Create Emmanuel ASIMWE---223020753, Gad MUGISHA----223008547 #47

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389 changes: 389 additions & 0 deletions Emmanuel ASIMWE---223020753, Gad MUGISHA----223008547
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Emmanuel ASIMWE---223020753
Gad MUGISHA----223008547


QN1.
import javax.swing.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

public class Loan {
// Instance variables
private double monthlyPayment;
private int numberOfYears;
private double loanAmount;

// Constructor with three variables using "this" keyword
public Loan(double monthlyPayment, int numberOfYears, double loanAmount) {
this.monthlyPayment = monthlyPayment;
this.numberOfYears = numberOfYears;
this.loanAmount = loanAmount;
}

// Getter and Setter methods
public double getMonthlyPayment() {
return monthlyPayment;
}

public void setMonthlyPayment(double monthlyPayment) {
this.monthlyPayment = monthlyPayment;
}

public int getNumberOfYears() {
return numberOfYears;
}

public void setNumberOfYears(int numberOfYears) {
this.numberOfYears = numberOfYears;
}

public double getLoanAmount() {
return loanAmount;
}

public void setLoanAmount(double loanAmount) {
this.loanAmount = loanAmount;
}

// Method to calculate monthly payment
public void calculateMonthlyPayment(double annualInterestRate) {
double monthlyInterestRate = annualInterestRate / 12 / 100;
int totalMonths = this.numberOfYears * 12;
this.monthlyPayment = (this.loanAmount * monthlyInterestRate) /
(1 - Math.pow(1 + monthlyInterestRate, -totalMonths));
}

// Main method to display the UI
public static void main(String[] args) {
// Create a JFrame for the UI
JFrame frame = new JFrame("Loan Payment Calculator");
frame.setSize(400, 300);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setLayout(null);

// Labels and text fields for loan input
JLabel amountLabel = new JLabel("Loan Amount:");
amountLabel.setBounds(20, 20, 100, 25);
frame.add(amountLabel);

JTextField amountField = new JTextField();
amountField.setBounds(130, 20, 200, 25);
frame.add(amountField);

JLabel yearsLabel = new JLabel("Years:");
yearsLabel.setBounds(20, 60, 100, 25);
frame.add(yearsLabel);

JTextField yearsField = new JTextField();
yearsField.setBounds(130, 60, 200, 25);
frame.add(yearsField);

JLabel interestLabel = new JLabel("Interest Rate:");
interestLabel.setBounds(20, 100, 100, 25);
frame.add(interestLabel);

JTextField interestField = new JTextField();
interestField.setBounds(130, 100, 200, 25);
frame.add(interestField);

JButton calculateButton = new JButton("Calculate");
calculateButton.setBounds(130, 140, 100, 30);
frame.add(calculateButton);

JLabel resultLabel = new JLabel("Monthly Payment:");
resultLabel.setBounds(20, 180, 200, 25);
frame.add(resultLabel);

// Action listener for calculate button
calculateButton.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
// Get user inputs
double loanAmount = Double.parseDouble(amountField.getText());
int numberOfYears = Integer.parseInt(yearsField.getText());
double annualInterestRate = Double.parseDouble(interestField.getText());

// Create a Loan object and calculate monthly payment
Loan loan = new Loan(0, numberOfYears, loanAmount);
loan.calculateMonthlyPayment(annualInterestRate);

// Display result
resultLabel.setText("Monthly Payment: " + String.format("%.2f", loan.getMonthlyPayment()));
}
});

// Show the frame
frame.setVisible(true);
}
}


QN2.
/*
* Click nbfs://nbhost/SystemFileSystem/Templates/Licenses/license-default.txt to change this license
*/

package asi.hello;

import javax.swing.*;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.SQLException;
import java.sql.Statement;

public class StudentApp {

// Database connection details
private static final String URL = "jdbc:mysql://localhost:3306/Student2"; // Empty URL for creating a new database
private static final String USER = "root"; // Database username
private static final String PASSWORD = ""; // Database password

// Method to establish a connection to the database
public static Connection connect() throws SQLException {
return DriverManager.getConnection(URL, USER, PASSWORD);
}

// Method to create database and table
public static void createDatabaseAndTable() {
try (Connection conn = connect();
Statement stmt = conn.createStatement()) {

// Create Database
String createDatabaseSQL = "CREATE DATABASE IF NOT EXISTS Student2";
stmt.executeUpdate(createDatabaseSQL);

// Use the created database
String useDatabaseSQL = "USE Student2";
stmt.executeUpdate(useDatabaseSQL);

// Create Table
String createTableSQL = "CREATE TABLE IF NOT EXISTS STUDENTINFORMATION (" +
"reg_number INT PRIMARY KEY, " +
"last_name VARCHAR(100), " +
"first_name VARCHAR(100), " +
"years_of_study INT, " +
"telephone VARCHAR(15), " +
"college VARCHAR(100), " +
"email VARCHAR(100), " +
"physics BOOLEAN, " +
"mathematics BOOLEAN, " +
"chemistry BOOLEAN, " +
"biology BOOLEAN)";
stmt.executeUpdate(createTableSQL);

System.out.println("Database and table created successfully.");
} catch (SQLException e) {
System.out.println("Error creating database or table: " + e.getMessage());
}
}

// Method to insert student data into the database
public void insertStudent(int regNumber, String lastName, String firstName, int yearsOfStudy,
String telephone, String college, String email, boolean physics,
boolean mathematics, boolean chemistry, boolean biology) {
String sql = "INSERT INTO STUDENTINFORMATION (reg_number, last_name, first_name, years_of_study, telephone, college, email, physics, mathematics, chemistry, biology) VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)";
try (Connection conn = connect();
PreparedStatement pstmt = conn.prepareStatement(sql)) {
pstmt.setInt(1, regNumber);
pstmt.setString(2, lastName);
pstmt.setString(3, firstName);
pstmt.setInt(4, yearsOfStudy);
pstmt.setString(5, telephone);
pstmt.setString(6, college);
pstmt.setString(7, email);
pstmt.setBoolean(8, physics);
pstmt.setBoolean(9, mathematics);
pstmt.setBoolean(10, chemistry);
pstmt.setBoolean(11, biology);
pstmt.executeUpdate();
JOptionPane.showMessageDialog(null, "Data inserted successfully.");
} catch (SQLException e) {
JOptionPane.showMessageDialog(null, "Error inserting data: " + e.getMessage());
}
}

public static void main(String[] args) {
// Create the database and table
createDatabaseAndTable();

JFrame frame = new JFrame("Student Information");
frame.setSize(600, 500);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

JPanel panel = new JPanel();
frame.add(panel);
placeComponents(panel);

frame.setVisible(true);
}

private static void placeComponents(JPanel panel) {
panel.setLayout(null);
panel.setBackground(new Color(255, 250, 240)); // Floral White background

// Labels and text fields
Font labelFont = new Font("Arial", Font.BOLD, 14);
Font textFont = new Font("Arial", Font.PLAIN, 12);

JLabel regLabel = new JLabel("Reg Number:");
regLabel.setBounds(10, 20, 100, 25);
regLabel.setForeground(new Color(139, 0, 0)); // Dark Red label text color
regLabel.setFont(labelFont);
panel.add(regLabel);

JTextField regText = new JTextField(20);
regText.setBounds(120, 20, 165, 25);
regText.setFont(textFont);
regText.setBackground(new Color(224, 255, 255)); // Light Cyan background for text fields
panel.add(regText);

JLabel lastNameLabel = new JLabel("Last Name:");
lastNameLabel.setBounds(10, 50, 100, 25);
lastNameLabel.setForeground(new Color(139, 0, 0));
lastNameLabel.setFont(labelFont);
panel.add(lastNameLabel);

JTextField lastNameText = new JTextField(20);
lastNameText.setBounds(120, 50, 165, 25);
lastNameText.setFont(textFont);
lastNameText.setBackground(new Color(224, 255, 255));
panel.add(lastNameText);

JLabel firstNameLabel = new JLabel("First Name:");
firstNameLabel.setBounds(10, 80, 100, 25);
firstNameLabel.setForeground(new Color(139, 0, 0));
firstNameLabel.setFont(labelFont);
panel.add(firstNameLabel);

JTextField firstNameText = new JTextField(20);
firstNameText.setBounds(120, 80, 165, 25);
firstNameText.setFont(textFont);
firstNameText.setBackground(new Color(224, 255, 255));
panel.add(firstNameText);

JLabel yearsLabel = new JLabel("Years of Study:");
yearsLabel.setBounds(10, 110, 100, 25);
yearsLabel.setForeground(new Color(139, 0, 0));
yearsLabel.setFont(labelFont);
panel.add(yearsLabel);

JTextField yearsText = new JTextField(20);
yearsText.setBounds(120, 110, 165, 25);
yearsText.setFont(textFont);
yearsText.setBackground(new Color(224, 255, 255));
panel.add(yearsText);

JLabel phoneLabel = new JLabel("Telephone:");
phoneLabel.setBounds(10, 140, 100, 25);
phoneLabel.setForeground(new Color(139, 0, 0));
phoneLabel.setFont(labelFont);
panel.add(phoneLabel);

JTextField phoneText = new JTextField(20);
phoneText.setBounds(120, 140, 165, 25);
phoneText.setFont(textFont);
phoneText.setBackground(new Color(224, 255, 255));
panel.add(phoneText);

JLabel collegeLabel = new JLabel("College:");
collegeLabel.setBounds(10, 170, 100, 25);
collegeLabel.setForeground(new Color(139, 0, 0));
collegeLabel.setFont(labelFont);
panel.add(collegeLabel);

JTextField collegeText = new JTextField(20);
collegeText.setBounds(120, 170, 165, 25);
collegeText.setFont(textFont);
collegeText.setBackground(new Color(224, 255, 255));
panel.add(collegeText);

JLabel emailLabel = new JLabel("Email:");
emailLabel.setBounds(10, 200, 100, 25);
emailLabel.setForeground(new Color(139, 0, 0));
emailLabel.setFont(labelFont);
panel.add(emailLabel);

JTextField emailText = new JTextField(20);
emailText.setBounds(120, 200, 165, 25);
emailText.setFont(textFont);
emailText.setBackground(new Color(224, 255, 255));
panel.add(emailText);

// Modules checkboxes placed on the right side of the form
JLabel modulesLabel = new JLabel("Select Modules:");
modulesLabel.setBounds(320, 20, 120, 25);
modulesLabel.setForeground(new Color(139, 0, 0));
modulesLabel.setFont(labelFont);
panel.add(modulesLabel);

JCheckBox physicsCheckBox = new JCheckBox("Physics");
physicsCheckBox.setBounds(320, 50, 100, 25);
physicsCheckBox.setBackground(new Color(255, 250, 240)); // Floral White background for checkboxes
physicsCheckBox.setForeground(new Color(139, 0, 0));
panel.add(physicsCheckBox);

JCheckBox mathematicsCheckBox = new JCheckBox("Mathematics");
mathematicsCheckBox.setBounds(320, 80, 120, 25);
mathematicsCheckBox.setBackground(new Color(255, 250, 240));
mathematicsCheckBox.setForeground(new Color(139, 0, 0));
panel.add(mathematicsCheckBox);

JCheckBox chemistryCheckBox = new JCheckBox("Chemistry");
chemistryCheckBox.setBounds(320, 110, 100, 25);
chemistryCheckBox.setBackground(new Color(255, 250, 240));
chemistryCheckBox.setForeground(new Color(139, 0, 0));
panel.add(chemistryCheckBox);

JCheckBox biologyCheckBox = new JCheckBox("Biology");
biologyCheckBox.setBounds(320, 140, 100, 25);
biologyCheckBox.setBackground(new Color(255, 250, 240));
biologyCheckBox.setForeground(new Color(139, 0, 0));
panel.add(biologyCheckBox);

// Buttons (styled)
JButton submitButton = new JButton("Submit");
submitButton.setBounds(120, 230, 100, 40);
submitButton.setBackground(new Color(0, 100, 0)); // Dark Green background for button
submitButton.setForeground(Color.WHITE);
panel.add(submitButton);

JButton searchButton = new JButton("Search");
searchButton.setBounds(230, 230, 100, 40);
searchButton.setBackground(new Color(0, 100, 0)); // Dark Green background for button
searchButton.setForeground(Color.WHITE);
panel.add(searchButton);

// Action for Submit button
submitButton.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
int regNumber = Integer.parseInt(regText.getText());
String lastName = lastNameText.getText();
String firstName = firstNameText.getText();
int yearsOfStudy = Integer.parseInt(yearsText.getText());
String telephone = phoneText.getText();
String college = collegeText.getText();
String email = emailText.getText();
boolean physics = physicsCheckBox.isSelected();
boolean mathematics = mathematicsCheckBox.isSelected();
boolean chemistry = chemistryCheckBox.isSelected();
boolean biology = biologyCheckBox.isSelected();

new StudentApp().insertStudent(regNumber, lastName, firstName, yearsOfStudy, telephone, college, email,
physics, mathematics, chemistry, biology);
}
});

// Action for Search button
searchButton.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
JOptionPane.showMessageDialog(null, "Search functionality coming soon!");
}
});
}
}