Write a Awt application to develop a Text editor in Java .  It should implement following functions as menu options or functionality of Text editor  . 

• New
• Open
• Save
• Save As
• Page Setup
• Print
• Exit
• Delete
• Cut
• Copy
• Paste
• Find Next
• Replace
• Go To
• Select All

Text Editor Java

 

 

 

 

Program Code for Java Text Editor :

 

 import java.awt.*;  
 import java.awt.event.*;  
 import java.io.*;  
 import java.util.*;  
 //Texteditor class starts here  
 class Texteditor extends Frame implements ActionListener  
 {  
 TextArea ta=new TextArea();  
 int i,len1,len,pos1;  
 String str="",s3="",s2="",s4="",s32="",s6="",s7="",s8="",s9="";  
 String months[]={"January","February","March","April","May","June","July","August","September","October","November","December"};  
 CheckboxMenuItem chkb=new CheckboxMenuItem("Word Wrap");  
 public Texteditor()  
 {  
 MenuBar mb=new MenuBar();  
 setLayout(new BorderLayout());  
 add("Center",ta);  
 setMenuBar(mb);  
 Menu m1=new Menu("File");  
 Menu m2=new Menu("Edit");  
 Menu m3=new Menu("Tools");  
 Menu m4=new Menu("Help");  
 mb.add(m1);  
 mb.add(m2);  
 mb.add(m3);  
 mb.add(m4);  
 MenuItem mi1[]={  
 new MenuItem("New"),new MenuItem("Open"),new MenuItem("Save")  
 ,new MenuItem("Save As"),new MenuItem("Page Setup")  
 ,new MenuItem("Print"),new MenuItem("Exit")  
 };  
 MenuItem mi2[]={new MenuItem("Delete"),new MenuItem("Cut"),  
 new MenuItem("Copy"),new MenuItem("Paste"),new MenuItem("Find"),  
 new MenuItem("Find Next"),new MenuItem("Replace"),  
 new MenuItem("Go To"),new MenuItem("Select All"),  
 new MenuItem("Time Stamp")};  
 MenuItem mi3[]={new MenuItem("Choose Font"),new MenuItem("Compile"),  
 new MenuItem("Run")};  
 MenuItem mi4[]={new MenuItem("Help Topics"),  
 new MenuItem("About Texteditor")};  
 for(int i=0;i<len1;i++ )="" <br=""> {  
 m1.add(mi1[i]);  
 mi1[i].addActionListener(this);  
 }  
 for(int i=0;i<len1;i++) {="" <br=""> m2.add(mi2[i]);  
 mi2[i].addActionListener(this);  
 }  
 m3.add(chkb);  
 chkb.addActionListener(this);  
 for(int i=0;i<len1;i++ )="" <br=""> {  
 m3.add(mi3[i]);  
 mi3[i].addActionListener(this);  
 }  
 for(int i=0;i<len1;i++) <br=""> {  
 m4.add(mi4[i]);  
 mi4[i].addActionListener(this);  
 }  
 MyWindowsAdapter mw=new MyWindowsAdapter(this);  
 addWindowListener(mw);  
 setSize(500,500);  
 setTitle("untitled notepad");  
 setVisible(true);  
 }  
 public void actionPerformed(ActionEvent ae)  
 {  
 String arg=(String)ae.getActionCommand();  
 if(arg.equals("New"))  
 { dispose();  
 Texteditor t11=new Texteditor();  
 t11.setSize(500,500);  
 t11.setVisible(true);  
 }  
 try {  
 if(arg.equals("Open"))  
 {  
 FileDialog fd1=new FileDialog(this,"Select File",FileDialog.LOAD);  
 fd1.setVisible(true);  
 String s4="";  
 s2=fd1.getFile();  
 s3=fd1.getDirectory();  
 s32=s3+s2;  
 File f=new File(s32);  
 FileInputStream fii=new FileInputStream(f);  
 len=(int)f.length();  
 for(int j=0;j<len1;j++ )="" <br=""> {  
 char s5=(char)fii.read();  
 s4=s4 + s5;  
 }  
 ta.setText(s4);  
 }  
 }  
 catch(IOException e)  
 {  
 }  
 try  
 {  
 if(arg.equals("Save As"))  
 {  
 FileDialog dialog1=new FileDialog(this,"Save As",FileDialog.SAVE);  
 dialog1.setVisible(true);  
 s7=dialog1.getDirectory();  
 s8=dialog1.getFile();  
 s9=s7+s8+".txt";  
 s6=ta.getText();  
 len1=s6.length();  
 byte buf[]=s6.getBytes();  
 File f1=new File(s9);  
 FileOutputStream fobj1=new FileOutputStream(f1);  
 for(int k=0;k<len1;k++) <br=""> {  
 fobj1.write(buf[k]);  
 }  
 fobj1.close();  
 }  
 this.setTitle(s8 +" Texteditor File");  
 }  
 catch(IOException e){}  
 if(arg.equals("Exit"))  
 {  
 System.exit(0);  
 }  
 if(arg.equals("Cut"))  
 {  
 str=ta.getSelectedText();  
 i=ta.getText().indexOf(str);  
 ta.replaceRange(" ",i,i+str.length());  
 }  
 if(arg.equals("Copy"))  
 {  
 str=ta.getSelectedText();  
 }  
 if(arg.equals("Paste"))  
 {  
 pos1=ta.getCaretPosition();  
 ta.insert(str,pos1);  
 }  
 if(arg.equals("Delete"))  
 {  
 String msg=ta.getSelectedText();  
 i=ta.getText().indexOf(msg);  
 ta.replaceRange(" ",i,i+msg.length());  
 msg="";  
 }  
 if(arg.equals("Select All"))  
 {  
 String strText=ta.getText();  
 int strLen=strText.length();  
 ta.select(0,strLen);  
 }  
 if(arg.equals("Time Stamp"))  
 {  
 GregorianCalendar 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=ta.getCaretPosition();  
 ta.insert(hms,loc);  
 }  
 if(arg.equals("About Texteditor"))  
 {  
 AboutDialog d1=new AboutDialog(this,"About Texteditor");  
 d1.setVisible(true);  
 setSize(500,500);  
 }  
 }//Action pereformed end  
 public class MyWindowsAdapter extends WindowAdapter  
 {  
 Texteditor tt;  
 public MyWindowsAdapter(Texteditor ttt)  
 {  
 tt=ttt;  
 }  
 public void windowClosing(WindowEvent we)  
 {  
 tt.dispose();  
 }  
 }//Inner class winadapter end....  
 }//End of Texteditor class  
 public class balls  
 { public static void main(String args[])  
 {  
 Texteditor to=new Texteditor();  
 }  
 }  
 class AboutDialog extends Dialog implements ActionListener  
 {  
 AboutDialog(Frame parent,String title)  
 {  
 super(parent,title,false);  
 this.setResizable(false);  
 setLayout(new FlowLayout(FlowLayout.LEFT));  
 setSize(500,300);  
 }  
 public void actionPerformed(ActionEvent ae)  
 {  
 dispose();  
 }  
 }  

How to Run this Project :

• Open Eclipse 
• New Project 
• Add new Class to project 
• Paste Code in that class named Balls .
• Run the Project …Enjoy..!!