Added about project dialog

SQL driver code optimization
Throw error message in a message dialog
About project window
Removed unfinished JDialog

.classpath

@@ -1,6 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <classpath>
 	<classpathentry kind="src" path="src"/>
+	<classpathentry kind="src" path="img"/>
 	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-13">
 		<attributes>
 			<attribute name="module" value="true"/>

src/GUI/about.java

@@ -0,0 +1,53 @@
+package GUI;
+
+import java.awt.*;
+import javax.swing.*;
+import java.awt.event.*;
+import java.net.URL;
+
+public class about extends JDialog {
+	private static final long serialVersionUID = 5381052862136001506L;
+
+	public about() {
+		setModalityType(ModalityType.APPLICATION_MODAL);
+		setResizable(false);
+		setTitle("About Project");
+		setBackground(Color.WHITE);
+		getContentPane().setBackground(Color.WHITE);
+		Dimension dimension = Toolkit.getDefaultToolkit().getScreenSize();
+		int x = (int) ((dimension.getWidth() - getWidth()) / 2);
+		int y = (int) ((dimension.getHeight() - getHeight()) / 2);
+		setBounds(x, y, 516, 600);
+		setLocationRelativeTo(null);
+		setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
+		setAlwaysOnTop(true);
+		getContentPane().setLayout(null);
+		JLabel L = new JLabel(new ImageIcon(this.getClass().getClassLoader().getResource("resources/about.png")));
+		L.setHorizontalAlignment(SwingConstants.CENTER);
+		L.setBounds(0, 0, 500, 500);
+		getContentPane().add(L);
+
+		JButton gitbtn = new JButton(new ImageIcon(this.getClass().getClassLoader().getResource("resources/git.png")));
+		gitbtn.setBackground(Color.WHITE);
+		gitbtn.setBounds(208, 511, 100, 40);
+		getContentPane().add(gitbtn);
+		gitbtn.addActionListener(new ActionListener() {
+			public void actionPerformed(ActionEvent e) {
+				Desktop desktop = Desktop.isDesktopSupported() ? Desktop.getDesktop() : null;
+				if (desktop != null && desktop.isSupported(Desktop.Action.BROWSE)) {
+					try {
+						desktop.browse(new URL("https://github.com/shreyask21/assetmgmt/").toURI());
+					} catch (Exception ex) {
+						ex.printStackTrace();
+					}
+				}
+			}
+		});
+
+	}
+
+	public void display() {
+		this.setVisible(true);
+	}
+
+}

src/GUI/createdb_dialog.java

@@ -10,13 +10,16 @@
 import javax.swing.JRadioButton;
 import javax.swing.JTextField;
 import java.awt.Font;
+import java.awt.Toolkit;
+
 import javax.swing.JLabel;
 import javax.swing.JOptionPane;
 import javax.swing.ButtonGroup;
 import java.awt.event.ActionListener;
 import java.sql.SQLException;
 import java.awt.event.ActionEvent;
 import java.awt.Color;
+import java.awt.Dimension;
 
 /*Shows the database creation option dialog*/
 public class createdb_dialog extends JDialog implements ActionListener {
@@ -36,7 +39,12 @@ public createdb_dialog() throws SQLException {
 		this.setModal(true);
 		this.setTitle("Choose What To Do...");
 		setDefaultCloseOperation(JDialog.DISPOSE_ON_CLOSE);
+		Dimension dimension = Toolkit.getDefaultToolkit().getScreenSize();
+		int x = (int) ((dimension.getWidth() - getWidth()) / 2);
+		int y = (int) ((dimension.getHeight() - getHeight()) / 2);
 		setBounds(400, 300, 400, 300);
+		setLocation(x, y);
+		setLocationRelativeTo(null);
 		getContentPane().setLayout(new BorderLayout());
 		contentPanel.setBorder(new EmptyBorder(5, 5, 5, 5));
 		getContentPane().add(contentPanel, BorderLayout.CENTER);
@@ -52,7 +60,7 @@ public createdb_dialog() throws SQLException {
 
 		JRadioButton radio_olddb = new JRadioButton("Use Existing database");
 		radio_olddb.setFont(new Font("Tahoma", Font.PLAIN, 13));
-		radio_olddb.setBounds(210, 20, 147, 21);
+		radio_olddb.setBounds(210, 20, 168, 21);
 		contentPanel.add(radio_olddb);
 		radio_olddb.setActionCommand("old");
 

src/GUI/error_dialog.java

@@ -0,0 +1,9 @@
+package GUI;
+
+import javax.swing.JOptionPane;
+
+public class error_dialog {
+	public static void showError(String error) {
+		JOptionPane.showMessageDialog (null, error, "Something went Wrong", JOptionPane.ERROR_MESSAGE);
+	}
+}

src/GUI/login_dialog.java

@@ -1,6 +1,7 @@
 package GUI;
 
 import db_driver.assetdb;
+import GUI.about;
 import javax.swing.JButton;
 import javax.swing.JDialog;
 import javax.swing.JTextField;
@@ -9,10 +10,12 @@
 import javax.swing.JOptionPane;
 import javax.swing.SwingConstants;
 import java.awt.Font;
+import java.awt.Toolkit;
 import java.awt.event.ActionListener;
 import java.awt.event.KeyEvent;
 import java.awt.event.ActionEvent;
 import java.awt.Color;
+import java.awt.Dimension;
 
 /*Shows the login dialog*/
 public class login_dialog extends JDialog {
@@ -23,15 +26,23 @@ public class login_dialog extends JDialog {
 	private JLabel lblNewLabel;
 	private JLabel lblNewLabel_1;
 	private JLabel lblNewLabel_2;
+	private JButton aboutbtn;
 
 	/* Generates layout */
 	public login_dialog() {
 		/* Create layout */
-		this.setModal(true);
+		setModalityType(ModalityType.APPLICATION_MODAL);
+		setResizable(false);
 		this.setTitle("Login Prompt");
+		this.setAlwaysOnTop(false);
 		setDefaultCloseOperation(JDialog.DO_NOTHING_ON_CLOSE);
 		assetdb db = new assetdb();
+		Dimension dimension = Toolkit.getDefaultToolkit().getScreenSize();
+		int x = (int) ((dimension.getWidth() - getWidth()) / 2);
+		int y = (int) ((dimension.getHeight() - getHeight()) / 2);
 		setBounds(400, 300, 400, 300);
+		setLocation(x, y);
+		setLocationRelativeTo(null);
 		getContentPane().setLayout(null);
 		textbox_username = new JTextField();
 		textbox_username.setBounds(140, 89, 120, 25);
@@ -85,6 +96,19 @@ public void actionPerformed(ActionEvent e) {
 		});
 		exitbtn.setBounds(140, 194, 120, 25);
 		getContentPane().add(exitbtn);
+
+		aboutbtn = new JButton("About");
+		aboutbtn.addActionListener(new ActionListener() {
+			public void actionPerformed(ActionEvent e) {
+				about info = new about();
+				info.display();
+			}
+		});
+		aboutbtn.setForeground(Color.DARK_GRAY);
+		aboutbtn.setBackground(Color.WHITE);
+		aboutbtn.setFont(new Font("Tahoma", Font.PLAIN, 10));
+		aboutbtn.setBounds(316, 238, 68, 23);
+		getContentPane().add(aboutbtn);
 
 	}