Notes
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import java.awt.Font;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.Statement;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.JTextField;
import javax.swing.SwingConstants;
import javax.swing.table.DefaultTableColumnModel;
import javax.swing.table.DefaultTableModel;
public class MainPage extends JFrame{
JFrame frame = new JFrame();
JLabel label = new JLabel("");
MainPage(String name){
label.setBounds(0,0,198,42);
label.setText("Welcome " + name);
label.setFont(new Font("Times New Roman", Font.PLAIN,26));
frame.add(label);
frame.setDefaultCloseOperation(EXIT_ON_CLOSE);
frame.setBounds(400,400,550,500);
frame.setLayout(null);
frame.setVisible(true);
JScrollPane sp = new JScrollPane();
sp.setBounds(10,64,366,107);
frame.add(sp);
JTextField username = new JTextField();
username.setBounds(0,196,198,28);
frame.add(username);
JTextField emaile = new JTextField();
emaile.setBounds(0,226,198,28);
frame.add(emaile);
JTextField ide = new JTextField();
ide.setBounds(0,256,198,28);
frame.add(ide);
try {
Class.forName("com.mysql.cj.jdbc.Driver");
Connection con = DriverManager.getConnection
("jdbc:mysql://localhost:3306/cs2a","root","");
Statement stmt = con.createStatement();
String sql = "SELECT * FROM users";
ResultSet rs = stmt.executeQuery(sql);
String[] fcolumn = {"ID","Username","Email"};
DefaultTableModel tableModel = new DefaultTableModel(fcolumn,0);
while(rs.next()) {
String id=String.valueOf(rs.getInt("id"));
String uname = rs.getString("username");
String email = rs.getString("email");
String[] data = {id, uname, email };
tableModel.addRow(data);
}
JTable jt = new JTable(tableModel);
sp.setViewportView(jt);
jt.addMouseListener(new MouseAdapter() {
public void mouseClicked(MouseEvent me) {
int row = jt.getSelectedRow();
if(row<0) {
System.out.print("test");
}else {
try {
Class.forName("com.mysql.cj.jdbc.Driver");
Connection con = DriverManager.getConnection
("jdbc:mysql://localhost:3306/cs2a","root","");
Statement stmt = con.createStatement();
String id = jt.getValueAt(row, 0).toString();
String sql = "SELECT * FROM users WHERE id=' "+id+" ' ";
ResultSet rs = stmt.executeQuery(sql);
if(rs.next()) {
username.setText(rs.getString("username"));
emaile.setText(rs.getString("email"));
ide.setText(rs.getString("id"));
}
}catch(Exception ex) {System.out.print(ex);}}}});
con.close();
}catch(Exception ex) {System.out.print(ex);}
JLabel lblLoginPage = new JLabel("Book");
lblLoginPage.setHorizontalAlignment(SwingConstants.LEFT);
lblLoginPage.setFont
(new Font("Times New Roman", Font.PLAIN, 26));
lblLoginPage.setBounds(0,275,366,77);
frame.add(lblLoginPage);
JScrollPane dta = new JScrollPane();
dta.setBounds(10,330,366,77);
frame.add(dta);
try {
Class.forName("com.mysql.cj.jdbc.Driver");
Connection con = DriverManager.getConnection
("jdbc:mysql://localhost:3306/cs2a","root","");
Statement stmt = con.createStatement();
String sql = "SELECT * FROM selected_view";
ResultSet rs = stmt.executeQuery(sql);
String[] fcolumn = {"StudentID","BookName"};
DefaultTableModel tableModel = new DefaultTableModel(fcolumn,0);
while(rs.next()) {
int sid = rs.getInt("student_id");
String sd=String.valueOf(sid);
String bname = rs.getString("name");
String[] data = {sd, bname};
tableModel.addRow(data);
}
JTable jt = new JTable(tableModel);
dta.setViewportView(jt);
jt.addMouseListener(new MouseAdapter() {
public void mouseClicked(MouseEvent me) {
int row = jt.getSelectedRow();
if(row<0) {
System.out.print("test");
}else {
try {
Class.forName("com.mysql.cj.jdbc.Driver");
Connection con = DriverManager.getConnection
("jdbc:mysql://localhost:3306/cs2a","root","");
Statement stmt = con.createStatement();
String id = jt.getValueAt(row, 0).toString();
String sql = "SELECT * FROM users WHERE id=' "+id+" ' ";
ResultSet rs = stmt.executeQuery(sql);
if(rs.next()) {
username.setText(rs.getString("username"));
emaile.setText(rs.getString("email"));
ide.setText(rs.getString("id"));
}
}catch(Exception ex) {System.out.print(ex);}}}});
con.close();
}catch(Exception ex) {System.out.print(ex);}
JButton btnbook = new JButton("Books");
btnbook.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
// TODO Auto-generated method stub
BookTable rgs = new BookTable();
}
});
btnbook.setBounds(80,171,89,23);
frame.add(btnbook);
JButton btnStudent = new JButton("Student");
btnStudent.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
// TODO Auto-generated method stub
StudentTable stb = new StudentTable();
}
});
btnStudent.setBounds(190,171,89,23);
frame.add(btnStudent);
JButton btnUpdate = new JButton("Update");
btnUpdate.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
// TODO Auto-generated method stub
try {
Class.forName("com.mysql.cj.jdbc.Driver");
Connection con = DriverManager.getConnection
("jdbc:mysql://localhost:3306/cs2a","root","");
Statement stmt = con.createStatement();
String sql = "UPDATE users SET "
+ "username= '"+username.getText()+"' ,email= '"+emaile.getText()+"' WHERE id= "+ide.getText()+"";
stmt.execute(sql);
String ref = "SELECT * FROM users";
ResultSet rs = stmt.executeQuery(ref);
String[] fcolumn = {"ID","Username","Email"};
DefaultTableModel tableModel = new DefaultTableModel(fcolumn,0);
while(rs.next()) {
String id=String.valueOf(rs.getInt("id"));
String uname = rs.getString("username");
String email = rs.getString("email");
String[] data = {id, uname, email };
tableModel.addRow(data);
}
JTable jt = new JTable(tableModel);
sp.setViewportView(jt);
jt.addMouseListener(new MouseAdapter() {
public void mouseClicked(MouseEvent me) {
int row = jt.getSelectedRow();
if(row<0) {
System.out.print("test");
}else {
try {
Class.forName("com.mysql.cj.jdbc.Driver");
Connection con = DriverManager.getConnection
("jdbc:mysql://localhost:3306/cs2a","root","");
Statement stmt = con.createStatement();
String id = jt.getValueAt(row, 0).toString();
String sql = "SELECT * FROM users WHERE id=' "+id+" ' ";
ResultSet rs = stmt.executeQuery(sql);
if(rs.next()) {
username.setText(rs.getString("username"));
emaile.setText(rs.getString("email"));
ide.setText(rs.getString("id"));
}
}catch(Exception ex) {System.out.print(ex);}}}});
con.close();
}catch(Exception ex) {System.out.print(ex);}
}
});
btnUpdate.setBounds(220,220,89,23);
frame.add(btnUpdate);
JButton btnDelete = new JButton("Delete");
btnDelete.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
// TODO Auto-generated method stub
try {
Class.forName("com.mysql.cj.jdbc.Driver");
Connection con = DriverManager.getConnection
("jdbc:mysql://localhost:3306/cs2a","root","");
Statement stmt = con.createStatement();
String sql = "DELETE FROM users "
+ "WHERE id= "+ide.getText()+"";
stmt.execute(sql);
String ref = "SELECT * FROM users";
ResultSet rs = stmt.executeQuery(ref);
String[] fcolumn = {"ID","Username","Email"};
DefaultTableModel tableModel = new DefaultTableModel(fcolumn,0);
while(rs.next()) {
String id=String.valueOf(rs.getInt("id"));
String uname = rs.getString("username");
String email = rs.getString("email");
String[] data = {id, uname, email };
tableModel.addRow(data);
}
JTable jt = new JTable(tableModel);
sp.setViewportView(jt);
jt.addMouseListener(new MouseAdapter() {
public void mouseClicked(MouseEvent me) {
int row = jt.getSelectedRow();
if(row<0) {
System.out.print("test");
}else {
try {
Class.forName("com.mysql.cj.jdbc.Driver");
Connection con = DriverManager.getConnection
("jdbc:mysql://localhost:3306/cs2a","root","");
Statement stmt = con.createStatement();
String id = jt.getValueAt(row, 0).toString();
String sql = "SELECT * FROM users WHERE id=' "+id+" ' ";
ResultSet rs = stmt.executeQuery(sql);
if(rs.next()) {
username.setText(rs.getString("username"));
emaile.setText(rs.getString("email"));
ide.setText(rs.getString("id"));
}
}catch(Exception ex) {System.out.print(ex);}}}});
con.close();
}catch(Exception ex) {System.out.print(ex);}
}
});
btnDelete.setBounds(220,250,89,23);
frame.add(btnDelete);
btnStudent.setBounds(190,171,89,23);
frame.add(btnStudent);
}
}
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