Text Editor - Beginners / Lab Assignments Source Code in Java

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Home » Java Home » Beginners / Lab Assignments Home » Text Editor

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Title	Text Editor
Author	Sudha.P
Author Email	sudha83_cse [at] yahoo.co.in
Description	It will create a new text editor like the notepad
Category	Java » Beginners / Lab Assignments
Hits	387579
Code	Select and Copy the Code
import java.awt.; import javax.swing.; import java.awt.event.; import java.io.; import java.util.*; public class notepro extends JFrame implements ActionListener { MenuBar mbar; Menu file,edit,format,font,font1,font2; MenuItem item1,item2,item3,item4; MenuItem item5,item6,item7,item8,item9,item10; MenuItem fname1,fname2,fname3,fname4; MenuItem fstyle1,fstyle2,fstyle3,fstyle4; MenuItem fsize1,fsize2,fsize3,fsize4; JPanel mainpanel; TextArea text; Font f; String months[]={ "Jan","Feb","Mar","Apr", "May","Jun","Jul","Aug", "Sep","Oct","Nov","Dec"}; GregorianCalendar gcalendar; String command=" "; String str=" "; String str1=" ",str2=" ",str3=" "; String str4=" "; String str6=" "; String str7=" ",str8=" ",str9=" "; int len1; int i=0; int pos1; int len; public notepro(String str) { super(str); mainpanel=new JPanel(); mainpanel=(JPanel)getContentPane(); mainpanel.setLayout(new FlowLayout()); mbar=new MenuBar(); setMenuBar(mbar); file=new Menu("File"); edit=new Menu("Edit"); format=new Menu("Format"); font=new Menu("Font"); font1=new Menu("Font Style"); font2=new Menu("Size"); file.add(item1=new MenuItem("New...")); file.add(item2=new MenuItem("Open")); file.add(item3=new MenuItem("Save As...")); file.add(item4=new MenuItem("Exit")); mbar.add(file); edit.add(item5=new MenuItem("Cut")); edit.add(item6=new MenuItem("Copy")); edit.add(item7=new MenuItem("Paste")); edit.add(item8=new MenuItem("Delete")); edit.add(item10=new MenuItem("Select All")); edit.add(item9=new MenuItem("Time/Date")); mbar.add(edit); format.add(font); format.add(font1); format.add(font2); font.add(fname1=new MenuItem("Courier")); font.add(fname2=new MenuItem("Sans Serif")); font.add(fname3=new MenuItem("Monospaced")); font.add(fname4=new MenuItem("Symbol")); font1.add(fstyle1=new MenuItem("Regular")); font1.add(fstyle2=new MenuItem("Bold")); font1.add(fstyle3=new MenuItem("Italic")); font1.add(fstyle4=new MenuItem("Bold Italic")); font2.add(fsize1=new MenuItem("12")); font2.add(fsize2=new MenuItem("14")); font2.add(fsize3=new MenuItem("18")); font2.add(fsize4=new MenuItem("20")); mbar.add(format); item1.addActionListener(this); item2.addActionListener(this); item3.addActionListener(this); item4.addActionListener(this); item5.addActionListener(this); item6.addActionListener(this); item7.addActionListener(this); item8.addActionListener(this); item9.addActionListener(this); item10.addActionListener(this); fname1.addActionListener(this); fname2.addActionListener(this); fname3.addActionListener(this); fname4.addActionListener(this); fstyle1.addActionListener(this); fstyle2.addActionListener(this); fstyle3.addActionListener(this); fstyle4.addActionListener(this); fsize1.addActionListener(this); fsize2.addActionListener(this); fsize3.addActionListener(this); fsize4.addActionListener(this); text=new TextArea(26,60); mainpanel.add(text); f=new Font("Monotype Corsiva",Font.PLAIN,15); text.setFont(f); } public void actionPerformed(ActionEvent ae) { command=(String)ae.getActionCommand(); if(command.equals("New...")) { dispose(); notepro note1 = new notepro("Untitled-Notepad"); note1.setSize(500,500); note1.setVisible(true); } try { if(command.equals("Open")) { str4=" "; FileDialog dialog=new FileDialog(this,"Open"); dialog.setVisible(true); str1=dialog.getDirectory(); str2=dialog.getFile(); str3=str1+str2; File f=new File(str3); FileInputStream fobj=new FileInputStream(f); len=(int)f.length(); for(int j=0;j<len;j++) { char str5=(char)fobj.read(); str4=str4 + str5; } text.setText(str4); } } catch(IOException e) {} try { if(command.equals("Save As...")) { FileDialog dialog1=new FileDialog(this,"Save As",FileDialog.SAVE); dialog1.setVisible(true); str7=dialog1.getDirectory(); str8=dialog1.getFile(); str9=str7+str8; str6=text.getText(); len1=str6.length(); byte buf[]=str6.getBytes(); File f1=new File(str9); FileOutputStream fobj1=new FileOutputStream(f1); for(int k=0;k<len1;k++) { fobj1.write(buf[k]); } fobj1.close(); } this.setTitle(str8); } catch(IOException e){} if(command.equals("Exit")) { System.exit(0); } if(command.equals("Cut")) { str=text.getSelectedText(); i=text.getText().indexOf(str); text.replaceRange(" ",i,i+str.length()); } if(command.equals("Copy")) { str=text.getSelectedText(); } if(command.equals("Paste")) { pos1=text.getCaretPosition(); text.insert(str,pos1); } if(command.equals("Delete")) { String msg=text.getSelectedText(); i=text.getText().indexOf(msg); text.replaceRange(" ",i,i+msg.length()); } if(command.equals("Time/Date")) { gcalendar=new GregorianCalendar(); String h=String.valueOf(gcalendar.get(Calendar.HOUR)); String m=String.valueOf(gcalendar.get(Calendar.MINUTE)); String s=String.valueOf(gcalendar.get(Calendar.SECOND)); String date=String.valueOf(gcalendar.get(Calendar.DATE)); String mon=months[gcalendar.get(Calendar.MONTH)]; String year=String.valueOf(gcalendar.get(Calendar.YEAR)); String hms="Time"+" - "+h+":"+m+":"+s+" Date"+" - "+date+" "+mon+" "+year; int loc=text.getCaretPosition(); text.insert(hms,loc); } if(command.equals("Courier")) { String fontName=f.getName(); String fontFamily=f.getFamily(); int fontSize=f.getSize(); int fontStyle=f.getStyle(); f=new Font("Courier",fontStyle,fontSize); text.setFont(f); } if(command.equals("Sans Serif")) { String fontName=f.getName(); String fontFamily=f.getFamily(); int fontSize=f.getSize(); int fontStyle=f.getStyle(); f=new Font("Sans Serif",fontStyle,fontSize); text.setFont(f); } if(command.equals("Monospaced")) { String fontName=f.getName(); String fontFamily=f.getFamily(); int fontSize=f.getSize(); int fontStyle=f.getStyle(); f=new Font("Monospaced",fontStyle,fontSize); text.setFont(f); } if(command.equals("Symbol")) { String fontName=f.getName(); String fontFamily=f.getFamily(); int fontSize=f.getSize(); int fontStyle=f.getStyle(); f=new Font("Symbol",fontStyle,fontSize); text.setFont(f); System.out.println(f.getFamily()); } if(command.equals("Regular")) { String fontName=f.getName(); String fontFamily=f.getFamily(); int fontSize=f.getSize(); int fontStyle=f.getStyle(); f=new Font(fontName,Font.PLAIN,fontSize); text.setFont(f); } if(command.equals("Bold")) { String fontName=f.getName(); String fontFamily=f.getFamily(); int fontSize=f.getSize(); int fontStyle=f.getStyle(); f=new Font(fontName,Font.BOLD,fontSize); text.setFont(f); } if(command.equals("Italic")) { String fontName=f.getName(); String fontFamily=f.getFamily(); int fontSize=f.getSize(); int fontStyle=f.getStyle(); f=new Font(fontName,Font.ITALIC,fontSize); text.setFont(f); } if(command.equals("Bold Italic")) { String fontName=f.getName(); String fontFamily=f.getFamily(); int fontSize=f.getSize(); int fontStyle=f.getStyle(); f=new Font(fontName,Font.BOLD\|Font.ITALIC,fontSize); text.setFont(f); } if(command.equals("12")) { String fontName=f.getName(); String fontFamily=f.getFamily(); int fontSize=f.getSize(); int fontStyle=f.getStyle(); f=new Font(fontName,fontStyle,12); text.setFont(f); } if(command.equals("14")) { String fontName=f.getName(); String fontFamily=f.getFamily(); int fontSize=f.getSize(); int fontStyle=f.getStyle(); f=new Font(fontName,fontStyle,14); text.setFont(f); } if(command.equals("18")) { String fontName=f.getName(); String fontFamily=f.getFamily(); int fontSize=f.getSize(); int fontStyle=f.getStyle(); f=new Font(fontName,fontStyle,18); text.setFont(f); } if(command.equals("20")) { String fontName=f.getName(); String fontFamily=f.getFamily(); int fontSize=f.getSize(); int fontStyle=f.getStyle(); f=new Font(fontName,fontStyle,20); text.setFont(f); } if(command.equals("Select All")) { String strText=text.getText(); int strLen=strText.length(); text.select(0,strLen); } } public static void main(String args[]) { notepro note = new notepro("Untitled-Notepad"); note.setSize(500,500); note.setVisible(true); } }

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