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How do you create a note pad in java?
/* * To change this template, choose Tools | Templates * and open the template in the editor. */ package simpletexteditor; /** * * @author Ibrahim Alwazir */ /* * To change this template, choose Tools | Templates * and open the template in the editor. */ import java.awt.*; import java.awt.event.*; import javax.swing.*; import java.io.*; class MyPad extends JFrame implements ActionListener, KeyListener { boolean txtChanged = false; String fname = ""; JMenuBar mbar; JMenu mnuFile, mnuEdit; JMenuItem fileNew, fileOpen, fileSave, fileExit; JMenuItem editCut, editCopy, editPaste, editSelectAll, editDel; JToolBar tlbr; ImageIcon iconNew, iconOpen, iconSave; ImageIcon iconCut, iconCopy, iconPaste; JButton bttnNew, bttnOpen, bttnSave; JButton bttnCut, bttnCopy, bttnPaste; JCheckBoxMenuItem wordWrap; JTextArea txtPad; Container c; MyPad() { initComponents(); setTitle("Simple Text Editor"); setSize(400,300); setVisible(true); setDefaultCloseOperation(DO_NOTHING_ON_CLOSE); addWindowListener(new WinHandler()); } void initComponents() { //get a handle (reference) to the //content pane of window c = getContentPane(); //set BorderLayout Manager to arrange components in content pane c.setLayout(new BorderLayout()); initMenu(); //create textarea txtPad = new JTextArea(); Font f = new Font("Arial", Font.PLAIN, 20); txtPad.setFont(f); txtPad.addKeyListener(this); txtPad.setLineWrap(false); /* Sets word wrap style to false. */ txtPad.setWrapStyleWord(false); //add txtPad in scrollpane JScrollPane jscroll = new JScrollPane(txtPad); //add scrollpane in window c.add(jscroll, BorderLayout.CENTER); } void initMenu() { //create menubar mbar = new JMenuBar(); //create menus mnuFile = new JMenu("File"); mnuEdit = new JMenu("Edit"); //create menuitems fileNew = new JMenuItem("New"); fileOpen= new JMenuItem("Open"); fileSave= new JMenuItem("Save"); fileExit = new JMenuItem("Exit"); wordWrap = new JCheckBoxMenuItem("word wrap"); editCut = new JMenuItem("Cut"); editCopy= new JMenuItem("Copy"); editPaste = new JMenuItem("Paste"); editSelectAll = new JMenuItem("Select All"); editDel= new JMenuItem("Delete"); //add menuitems in menus mnuFile.add(fileNew); mnuFile.add(fileOpen); mnuFile.add(fileSave); mnuFile.add(fileExit); mnuEdit.add(editCut); mnuEdit.add(editCopy); mnuEdit.add(editPaste); mnuEdit.addSeparator(); mnuEdit.add(editSelectAll); mnuEdit.add(editDel); mnuEdit.add(wordWrap); //attach menus to menubar mbar.add(mnuFile); mbar.add(mnuEdit); //attach menubar to window setJMenuBar(mbar); //attach actionlister to menuitems fileNew.addActionListener(this); fileOpen.addActionListener(this); fileSave.addActionListener(this); fileExit.addActionListener(this); editCut.addActionListener(this); editCopy.addActionListener(this); editPaste.addActionListener(this); editSelectAll.addActionListener(this); editDel.addActionListener(this); wordWrap.addActionListener(this); } public void actionPerformed(ActionEvent e) { Object src = e.getSource(); if(src.equals(fileNew)) { newFile(); } else if(src.equals(fileOpen) ) { openFile(); } else if(src.equals(fileSave) ) { saveFile(); } else if(src.equals(fileExit)) { exitFile(); } else if(src.equals(wordWrap)) { /* Calls the warpFile() method. */ wrapFile(); } else if(src.equals(editCut)) { txtPad.cut(); } else if(src.equals(editCopy) ) { txtPad.copy(); } else if(src.equals(editPaste)) { txtPad.paste(); } else if(src.equals(editSelectAll)) { txtPad.selectAll(); } else if(src.equals(editDel)) { //replace selected content with a blank txtPad.replaceSelection(""); } }//end of actionPerformed void newFile() { if(txtChanged true) { /* Sets the line and word wrap style to TRUE. */ txtPad.setLineWrap(true); txtPad.setWrapStyleWord(true); } else { /* Sets the line and word wrap style to FALSE. */ txtPad.setLineWrap(false); txtPad.setWrapStyleWord(false); } } public void keyPressed(KeyEvent e) { //System.out.println("KP"); } public void keyReleased(KeyEvent e) { //System.out.println("KR"); } public void keyTyped(KeyEvent e) { txtChanged = true; } class WinHandler extends WindowAdapter { public void windowClosing(WindowEvent e) { exitFile(); } } public static void main(String args[]) { MyPad mp = new MyPad(); } } class HelpDlg extends JDialog { public HelpDlg(MyPad m) { //MyPad object is the parent window of this dialog super(m,true); //register it //m is the MYPad ref that will be the owner //true means current dialog will be a modal window setSize(200, 150); setVisible(true); setDefaultCloseOperation(DISPOSE_ON_CLOSE); } }
Source code for notepad in java?
import java.awt.*; import java.awt.event.*; import java.awt.datatransfer.*; import java.io.*; public class Editor extends Frame { String filename; TextArea tx; Clipboard clip = getToolkit().getSystemClipboard(); Editor() { setLayout(new GridLayout(1,1)); tx = new TextArea(); add(tx); MenuBar mb = new MenuBar(); Menu F = new Menu("file"); MenuItem n = new MenuItem("New"); MenuItem o = new MenuItem("Open"); MenuItem s = new MenuItem("Save"); MenuItem e = new MenuItem("Exit"); n.addActionListener(new New()); F.add(n); o.addActionListener(new Open()); F.add(o); s.addActionListener(new Save()); F.add(s); e.addActionListener(new Exit()); F.add(e); mb.add(F); Menu E = new Menu("Edit"); MenuItem cut = new MenuItem("Cut"); MenuItem copy = new MenuItem("Copy"); MenuItem paste = new MenuItem("Paste"); cut.addActionListener(new Cut()); E.add(cut); copy.addActionListener(new Copy()); E.add(copy); paste.addActionListener(new Paste()); E.add(paste); mb.add(E); setMenuBar(mb); mylistener mylist = new mylistener(); addWindowListener(mylist); } class mylistener extends WindowAdapter { public void windowClosing (WindowEvent e) { System.exit(0); } } class New implements ActionListener { public void actionPerformed(ActionEvent e) { tx.setText(" "); setTitle(filename); } } class Open implements ActionListener { public void actionPerformed(ActionEvent e) { FileDialog fd = new FileDialog(Editor.this, "select File",FileDialog.LOAD); fd.show(); if (fd.getFile()!=null) { filename = fd.getDirectory() + fd.getFile(); setTitle(filename); ReadFile(); } tx.requestFocus(); } } class Save implements ActionListener { public void actionPerformed(ActionEvent e) { FileDialog fd = new FileDialog(Editor.this,"Save File",FileDialog.SAVE); fd.show(); if (fd.getFile()!=null) { filename = fd.getDirectory() + fd.getFile(); setTitle(filename); try { DataOutputStream d = new DataOutputStream(new FileOutputStream(filename)); String line = tx.getText(); BufferedReader br = new BufferedReader(new StringReader(line)); while((line = br.readLine())!=null) { d.writeBytes(line + "\r\n"); d.close(); } } catch(Exception ex) { System.out.println("File not found"); } tx.requestFocus(); } } } class Exit implements ActionListener { public void actionPerformed(ActionEvent e) { System.exit(0); } } void ReadFile() { BufferedReader d; StringBuffer sb = new StringBuffer(); try { d = new BufferedReader(new FileReader(filename)); String line; while((line=d.readLine())!=null) sb.append(line + "\n"); tx.setText(sb.toString()); d.close(); } catch(FileNotFoundException fe) { System.out.println("File not Found"); } catch(IOException ioe){} } class Cut implements ActionListener { public void actionPerformed(ActionEvent e) { String sel = tx.getSelectedText(); StringSelection ss = new StringSelection(sel); clip.setContents(ss,ss); tx.replaceRange(" ",tx.getSelectionStart(),tx.getSelectionEnd()); } } class Copy implements ActionListener { public void actionPerformed(ActionEvent e) { String sel = tx.getSelectedText(); StringSelection clipString = new StringSelection(sel); clip.setContents(clipString,clipString); } } class Paste implements ActionListener { public void actionPerformed(ActionEvent e) { Transferable cliptran = clip.getContents(Editor.this); try { String sel = (String) cliptran.getTransferData(DataFlavor.stringFlavor); tx.replaceRange(sel,tx.getSelectionStart(),tx.getSelectionEnd()); } catch(Exception exc) { System.out.println("not string flavour"); } } } public static void main(String args[]) { Frame f = new Editor(); f.setSize(500,400); f.setVisible(true); f.show(); } }
