librarysystem.java

采用GUI格式调用的库函数直接写的源码

		userName = user;

		//If Current User not Administrator of Program.

		if (!(userName.equals ("Admin"))) {
			newBook.setEnabled (false);
			book.setEnabled (false);
			btnNewBook.setEnabled (false);
			newMember.setEnabled (false);
			member.setEnabled (false);
			btnNewMember.setEnabled (false);
			issueBook.setEnabled (false);
			issue.setEnabled (false);
			btnIssue.setEnabled (false);
			makeUser.setEnabled (false);
		}

		//Creating the StatusBar of Program.

		lbStatus = new JLabel (" " + "Muhammad Wasif's LibrarySystem.", Label.LEFT);
		lbStatus.setForeground (Color.black);
		lbStatus.setToolTipText ("Program's Title");
		lbWelcome = new JLabel ("Welcome " + userName + " Today is " + d + " ", JLabel.RIGHT);
		lbWelcome.setForeground (Color.black);
		lbWelcome.setToolTipText ("Welcome User : System Current Date");
		statusBar.setLayout (new BorderLayout());
		statusBar.add (lbStatus, BorderLayout.WEST);
		statusBar.add (lbWelcome, BorderLayout.EAST);

		//Setting the Contents of Programs.

		getContentPane().add (toolBar, BorderLayout.NORTH);
		getContentPane().add (desktop, BorderLayout.CENTER);
		getContentPane().add (statusBar, BorderLayout.SOUTH);

		//Getting the Database.

		con = conn;

		//Showing The Main Form of Application.

		setVisible (true);

	}

	//Function For Performing different Actions By Menus of Program.

	public void actionPerformed (ActionEvent ae) {
	
		Object obj = ae.getSource();

		if (obj == newBook || obj == book || obj == btnNewBook) {

			boolean b = openChildWindow ("Add New Book");
			if (b == false) {
				AddBook adBook = new AddBook (con);
				desktop.add (adBook);			//Adding Child Window to DesktopPane.
				adBook.show ();				//Showing the Child Window.
			}

		}
		else if (obj == newMember || obj == member || obj == btnNewMember) {

			boolean b = openChildWindow ("Add New Member");
			if (b == false) {
				AddMember adMember = new AddMember (con);
				desktop.add (adMember);
				adMember.show ();
			}

		}
		else if (obj == printBook || obj == print) {

			getBookId ();

		}
		else if (obj == printMember) {

			getMemberId ();

		}
		else if (obj == printIssueBook || obj == btnPrintIssue) {

			getIssueBook ();

		}
		else if (obj == end) {

			quitApp ();	//Calling the Function to Quit the Program.

		}
		else if (obj == issueBook || obj == issue || obj == btnIssue) {

			boolean b = openChildWindow ("Issue Book");
			if (b == false) {
				IssueBook isBook = new IssueBook (con);
				desktop.add (isBook);
				isBook.show ();
			}

		}
		else if (obj == returnBook || obj == bookReturn || obj == btnReturn) {

			boolean b = openChildWindow ("Return Book");
			if (b == false) {
				ReturnBook rtBook = new ReturnBook (con);
				desktop.add (rtBook);
				rtBook.show ();
			}

		}
		else if (obj == delBook || obj == btnDelBook) {

			boolean b = openChildWindow ("Delete Book");
			if (b == false) {
				DeleteBook dlBook = new DeleteBook (con);
				desktop.add (dlBook);
				dlBook.show ();
			}

		}
		else if (obj == delMember || obj == btnDelMember) {

			boolean b = openChildWindow ("Delete Member");
			if (b == false) {
				DeleteMember dlMember = new DeleteMember (con);
				desktop.add (dlMember);
				dlMember.show ();
			}

		}
		else if (obj == findBook || obj == find || obj == btnFindBook) {

			boolean b = openChildWindow ("Search Books");
			if (b == false) {
				SearchBook srBook = new SearchBook (con);
				desktop.add (srBook);
				srBook.show ();
			}

		}
		else if (obj == findMember || obj == btnFindMember) {

			boolean b = openChildWindow ("Search Members");
			if (b == false) {
				SearchMember srMember = new SearchMember (con);
				desktop.add (srMember);
				srMember.show ();
			}

		}
		else if (obj == viewAllBook) {

			boolean b = openChildWindow ("View All Books");
			if (b == false) {
				ViewAllBooks vwAllBook = new ViewAllBooks (con);
				desktop.add (vwAllBook);
				vwAllBook.show ();
			}

		}
		else if (obj == viewAllMember || obj == view) {

			boolean b = openChildWindow ("View All Members");
			if (b == false) {
				ViewAllMembers vwAllMember = new ViewAllMembers (con);
				desktop.add (vwAllMember);
				vwAllMember.show ();
			}

		}
		else if (obj == viewIssueBook) {

			boolean b = openChildWindow ("View All Issued Books");
			if (b == false) {
				ViewIssuedBooks vwIssue = new ViewIssuedBooks (con);
				desktop.add (vwIssue);
				vwIssue.show ();
			}

		}
		else if (obj == change) {

			Color cl = desktop.getBackground ();	//Getting the Current Background Color.
			//Showing the Color Dialog Box to Change Background Color.
			cl = JColorChooser.showDialog (this, "Choose Background Color", cl);
			if (cl == null) { }			//If No Color is Selected.
			else {
				desktop.setBackground (cl);	//Aplying Selected Color for Background Color.
				desktop.repaint ();		//Repaint the DesktopPane.
			}

		}
		else if (obj == changePassword || obj == btnChange) {

			boolean b = openChildWindow ("Change Password");
			if (b == false) {
				ChangePassword chPass = new ChangePassword (userName, con);
				desktop.add (chPass);
				chPass.show ();
			}
		}
		else if (obj == makeUser) {

			boolean b = openChildWindow ("Create New User");
			if (b == false) {
				NewUser mkUser = new NewUser (con);
				desktop.add (mkUser);
				mkUser.show ();
			}
		}
		else if (obj == close) {

			JInternalFrame Frames[] = desktop.getAllFrames (); 	//Getting all Open Frames.

			for (int getFrameLoop = 0; getFrameLoop < Frames.length; getFrameLoop++) {
				try {
	 				Frames[getFrameLoop].setClosed (true); 	//Close the Active Frame.
					break;					//Exit From Loop.
				} 
				catch (Exception CloseExc) { }			//if Error then Do Nothing.
			}

			/*
			//Following Lines also Work Nice If You Trying to Close the Active Form in Current Program
			//But it only Works then If You've JDK 1.3 or Higher Installed on Your System.
			try {
				desktop.getSelectedFrame().setClosed(true);	//Closing the Active Form.
			}
			catch (Exception CloseExc) { }*/

		}
		else if (obj == closeAll) {

			JInternalFrame Frames[] = desktop.getAllFrames (); 	//Getting all Open Frames.

			for (int getFrameLoop = 0; getFrameLoop < Frames.length; getFrameLoop++) {
				try {
	 				Frames[getFrameLoop].setClosed (true); 	//Close the Active Frame One By One.
				} 
				catch (Exception CloseExc) { }			//if Error then Do Nothing.
			}

		}
		else if (obj == content || obj == btnHelp) {

			//Showing Program's Help so User can Understand the Program & Work Easily in it.
			boolean b = openChildWindow ("LibrarySystem Help");
			if (b == false) {
				LibraryHelp hlpLib = new LibraryHelp ("LibrarySystem Help", "Help/Library.htm");
				desktop.add (hlpLib);
				hlpLib.show ();
			}

		}
		else if (obj == keyHelp || obj == btnKey) {

			//Showing the Shortcut Keys of Program to Guide User.
			boolean b = openChildWindow ("LibrarySystem Keys");
			if (b == false) {
				LibraryHelp hlpKey = new LibraryHelp ("LibrarySystem Keys", "Help/Keys.htm");
				desktop.add (hlpKey);
				hlpKey.show ();
			}

		}
		else if (obj == about) {

			//Showing the MessageBox Containig the Muhammad Wasif's LibrarySystem Credits.
			String msg = "Muhammad Wasif's LibrarySystem.\n\n" + "Created & Designed By:\n" + 
				"Muhammad Wasif Javed\n\n" + "E-mail me:\n [e-mail]";
			JOptionPane.showMessageDialog (this, msg, "About LibrarySystem", JOptionPane.PLAIN_MESSAGE);

		}

	}

	//Function Perform By LookAndFeel MenuItem (Style MenuItem).

	public void itemStateChanged (ItemEvent e) {

		for( int i = 0; i < radio.length; i++ )
			if(radio[i].isSelected()) {		//Getting Selected Look & Feel Option.
				changeLookAndFeel (i);		//Change the Program's Look & Feel.
			}

	}	

	//Function for Changing the Program's Look & Feel.

	public void changeLookAndFeel (int val) {

		try {
			UIManager.setLookAndFeel (looks[val].getClassName());	//Getting the Look & Feel Name.
			SwingUtilities.updateComponentTreeUI (this);		//Changing Look & Feel of Program.
		}
		catch (Exception e) { }

	}

	//Loop Through All the Opened JInternalFrame to Perform the Task.

	private boolean openChildWindow (String title) {

		JInternalFrame[] childs = desktop.getAllFrames ();		//Get All Open Child Windows.
		for (int i = 0; i < childs.length; i++) {
			if (childs[i].getTitle().equalsIgnoreCase (title)) {	//Getting the Title of Child Window.
				childs[i].show ();				//Setting Focus on the Child Window.
				return true;
			}
		}
		return false;

	}

	//Function For Closing the Program.

	private void quitApp () {

		try {
			//Show a Confirmation Dialog.
		    	int reply = JOptionPane.showConfirmDialog (this, 
				"Are you really want to exit From\nMuhammad Wasif's LibrarySystem?",
				"LibrarySystem - Exit", JOptionPane.YES_NO_OPTION, JOptionPane.PLAIN_MESSAGE);
			//Check the User Selection.
			if (reply == JOptionPane.YES_OPTION) {				//If User's Choice Yes then.
				setVisible (false);					//Hide the Frame.
				System.out.println ("\n\nThanks For Using Muhammad " + 	//Displaying Message on Screen.
						"Wasif's LibrarySystem.\nAuthor : " + 
						"Muhammad Wasif Javed\n");
				dispose();            					//Free the System Resources.
				System.exit (0);        				//Close the Application.
			}
			else if (reply == JOptionPane.NO_OPTION) {			//If User's Choice No then.
				setDefaultCloseOperation(JFrame.DO_NOTHING_ON_CLOSE);	//Do Nothing Return to Program.
			}
		} 

		catch (Exception e) {}

	}

	//Following Functions use for Printing Book Record.

	void getBookId () {

		String printing;

			try {	//Getting User's Answer.
				printing = JOptionPane.showInputDialog (this, "Enter Book Id to Print Book Detail.\n" +
			"(Tip: Book Id Contains only Digits)", "LibrarySystem - PrintRecord", JOptionPane.PLAIN_MESSAGE);

				if (printing == null) { }	//If Cancelling the Printing.
				if (printing.equals ("")) {	//If No Value Provided.
					JOptionPane.showMessageDialog (this, "Provide Book Id to Print.",
					 "LibrarySystem - EmptyField", JOptionPane.PLAIN_MESSAGE);
					getBookId ();		//Calling Same Function Again.
				}
				else {
					findBookRec (printing, con);	//Finding Book Record.
				}
			}
			catch (Exception e) { }

	}

	//Function use to Find Book Record.

	void findBookRec (String rec, Connection con) {

		long id = Integer.parseInt (rec);	//Converting String to Numeric.
		long bookNo;				//Use for Comparing the Book's Id.
		boolean found = false;			//To Confirm the Book's Id Existance.

		try {	//SELECT Query to Retrieved the Record.
			String q = "SELECT * FROM Books WHERE BookId = " + id + "";

			st = con.createStatement ();		//Creating Statement Object.
			ResultSet rs = st.executeQuery (q);	//Executing the Query.
			rs.next ();				//Moving towards the Record.
			bookNo = rs.getLong ("BookId");		//Storing the Record.
			if (bookNo == id) {			//If Record Found then Display Records.
				found = true;
				String bookName = rs.getString ("BookName");
				String author = rs.getString ("BookAuthor");
				long price = rs.getLong ("BookPrice");
				String cat = rs.getString ("Category");
				//Printing the Book Record.
				printRecord (makeBookPrint ("" + id, bookName, author, "" + price, cat));
			}
		}
		catch(SQLException sqlex) {
			if (found == false) {
				JOptionPane.showMessageDialog (this, "Record not Found.");
				getBookId ();
			}
		}

	}

	//Function use to make Current Record ready for Print.

	String makeBookPrint (String id, String name, String author, String price, String category) {

		String data = "";

		String data0 = "\n               Muhammad Wasif's LibrarySystem  \n";		//Page Title.
		String data1 = "                         Book Detail             \n\n";		//Page Header.
		String data2 = "  Book ID:         " + id +		"\n";
		String data3 = "  Book Name:       " + name +		"\n";
		String data4 = "  Book Author:     " + author +		"\n";
		String data5 = "  Book Price:      " + price +		"\n";
		String data6 = "  Book Category:   " + category + 	"\n";
		String data7 = "            Copyright