Simple notepad java Source Code project, notepad java source code

Simple notepad java Source Code project, notepad java source code

The Code is as follows:

Import java. awt. *; import java. io. *; import java. awt. datatransfer. *; import java. awt. event. *; public class Main extends Frame implements ActionListener {private static final long serialVersionUID = 1L; TextArea textArea = new TextArea (); MenuBar menuBar = new MenuBar (); menu fileMenu = new Menu ("File"); MenuItem newItem = new MenuItem ("New"); MenuItem openItem = new MenuItem ("Open"); MenuItem saveItem = New MenuItem ("Save"); MenuItem saveAsItem = new MenuItem ("Save As"); MenuItem exitItem = new MenuItem ("Exit "); menu editMenu = new Menu ("Edit"); MenuItem selectItem = new MenuItem ("Select All"); MenuItem copyItem = new MenuItem ("Copy "); menuItem cutItem = new MenuItem ("Cut"); MenuItem pasteItem = new MenuItem ("Paste"); String fileName = null; Toolkit toolKit = Toolkit. getdefatooltoolkit (); Clipboar D clipBoard = toolKit. getSystemClipboard (); private FileDialog openFileDialog = new FileDialog (this, "Open File", FileDialog. LOAD); private FileDialog saveAsFileDialog = new FileDialog (this, "Save File As", FileDialog. SAVE); public Main () {setTitle ("Notepad program-by Jackbase"); setFont (new Font ("Times New Roman", Font. PLAIN, 12); setBackground (Color. white); setSize (400,300); fileMenu. add (newItem); fileMenu. add (o PenItem); fileMenu. addSeparator (); fileMenu. add (saveItem); fileMenu. add (saveAsItem); fileMenu. addSeparator (); fileMenu. add (exitItem); editMenu. add (selectItem); editMenu. addSeparator (); editMenu. add (copyItem); editMenu. add (cutItem); editMenu. add (pasteItem); menuBar. add (fileMenu); menuBar. add (editMenu); setMenuBar (menuBar); add (textArea); addWindowListener (new WindowAdapter () {public void windowClos Ing (receivwevent e) {System. exit (0) ;}}); newItem. addActionListener (this); openItem. addActionListener (this); saveItem. addActionListener (this); saveAsItem. addActionListener (this); exitItem. addActionListener (this); selectItem. addActionListener (this); copyItem. addActionListener (this); cutItem. addActionListener (this); pasteItem. addActionListener (this);} public void actionreceivmed (ActionEvent e ){// Listen to event Object eventSource = e. getSource (); if (eventSource = newItem) {textArea. setText ("");} else if (eventSource = openItem) {openFileDialog. show (); fileName = openFileDialog. getDirectory () + openFileDialog. getFile (); if (fileName! = Null) readFile (fileName);} else if (eventSource = saveItem) {if (fileName! = Null) writeFile (fileName);} else if (eventSource = saveAsItem) {saveAsFileDialog. show (); fileName = saveAsFileDialog. getDirectory () + saveAsFileDialog. getFile (); if (fileName! = Null) writeFile (fileName);} else if (eventSource = selectItem) {textArea. selectAll ();} else if (eventSource = copyItem) {String text = textArea. getSelectedText (); StringSelection selection = new StringSelection (text); clipBoard. setContents (selection, null);} else if (eventSource = cutItem) {String text = textArea. getSelectedText (); StringSelection selection = new StringSelection (text); clipBoard. setContents (selection, null); textArea. replaceRange ("", textArea. getSelectionStart (), textArea. getSelectionEnd ();} else if (eventSource = pasteItem) {Transferable contents = clipBoard. getContents (this); if (contents = null) return; String text; text = ""; try {text = (String) contents. getTransferData (DataFlavor. stringFlavor);} catch (Exception exception) {} textArea. replaceRange (text, textArea. getSelectionStart (), textArea. getSelectionEnd ();} else if (eventSource = exitItem) {System. exit (0) ;}} public void readFile (String fileName) {// Read File Processing try {file File = new file (fileName); FileReader readIn = new FileReader (File ); int size = (int) file. length (); int charsRead = 0; char [] content = new char [size]; while (readIn. ready () charsRead + = readIn. read (content, charsRead, size-charsRead); readIn. close (); textArea. setText (new String (content, 0, charsRead);} catch (IOException e) {System. out. println ("Error opening file") ;}} public void writeFile (String fileName) {// try {File file File = new file (fileName ); fileWriter writeOut = new FileWriter (file); writeOut. write (textArea. getText (); writeOut. close ();} catch (IOException e) {System. out. println ("Error writing file") ;}@suppresswarnings ("deprecation") public static void main (String [] args) {Frame frame = new Main (); // create an object frame. show (); // object display }}

Running result
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