Another text editor (java-applets)

import java.*;
import java.io.*;
import java.awt.*;
import java.awt.event.*;

class Editor extends Frame implements ActionListener,TextListener
{
TextArea ta;
int flg,pos,cnt,charcnt,i;
String fname,editcp,efile;
int si,start,openflg;
int line[]=new int[5000];
int keypres,cpos,replaceflg;

public Editor()
{
start=0;cnt=0;charcnt=0;replaceflg=1;
flg=0;keypres=0;i=0;openflg=0;
setTitle("Untitled - Java");
setSize(800,550);

ta = new TextArea("",20,50);
ta.addTextListener(this);

//////////////////////// Creating MenuBar,Menus & MenuItems
/////////////////////////

MenuBar mb = new MenuBar();
setMenuBar(mb);

Menu file = new Menu("File");
mb.add(file);
Menu edit = new Menu("Edit");
mb.add(edit);
Menu format = new Menu("Format");
mb.add(format);
Menu exec = new Menu("Execution");
mb.add(exec);
Menu help = new Menu("Help");
mb.add(help);

MenuItem new1 = new MenuItem("New");
file.add(new1);
new1.addActionListener(this);
MenuItem open = new MenuItem("Open...");
file.add(open);
open.addActionListener(this);
MenuItem save = new MenuItem("Save");
file.add(save);
save.addActionListener(this);
MenuItem saveas = new MenuItem("Save As...");
file.add(saveas);
saveas.addActionListener(this);
file.addSeparator();
MenuItem exit = new MenuItem("Exit");
file.add(exit);
exit.addActionListener(this);

MenuItem cut = new MenuItem("Cut");
edit.add(cut);
cut.addActionListener(this);
MenuItem copy = new MenuItem("Copy");
edit.add(copy);
copy.addActionListener(this);
MenuItem paste = new MenuItem("Paste");
edit.add(paste);
paste.addActionListener(this);
edit.addSeparator();
MenuItem find = new MenuItem("Find...");
edit.add(find);
find.addActionListener(this);
MenuItem replace1 = new MenuItem("Replace...");
edit.add(replace1);
replace1.addActionListener(this);
edit.addSeparator();
MenuItem got = new MenuItem("Go To...");
edit.add(got);
got.addActionListener(this);
MenuItem selall = new MenuItem("Select All");
edit.add(selall);
selall.addActionListener(this);
MenuItem delete1 = new MenuItem("Delete");
edit.add(delete1);
delete1.addActionListener(this);

MenuItem fonts = new MenuItem("Font...");
format.add(fonts);
fonts.addActionListener(this);

MenuItem compil = new MenuItem("Compile");
exec.add(compil);
compil.addActionListener(this);
MenuItem run = new MenuItem("Run");
exec.add(run);
run.addActionListener(this);

MenuItem about = new MenuItem("About...");
help.add(about);
about.addActionListener(this);

////////////////// Creating MenuBar,Menus & MenuItems Ends Here
//////////////////

add(ta);
setVisible(true);

addWindowListener(new mywind());
}


//////////////////////////// To Get The Values From Font Dialog
Box ///////////////////////////

public void setFontValue(String fontn,int fstyle,int fonts)
{
Font fnt = new Font(fontn,fstyle,fonts);
ta.setFont(fnt);
}

////////////////////////////////////// Font Dialog Box Ends
Here ////////////////////////////////////


////////////////////////////// To Get Values From Dialog Box
////////////////////////////////////

public void setValue(int state,String txt,String txt1,int txt2)
{
int stt=state;
int lpos=txt2;
int charpos[]=new int[1000];
int j;

///////////////////////////// Code For GoTo Line Number
/////////////////////////////

if (stt==1)
{
StringBuffer strbuf=new StringBuffer(ta.getText());
int len=strbuf.length();
j=0;
for(int i=0;i {
if(strbuf.charAt(i)==10)
{
charpos[j]=i;
j++;cnt++;
}
}

if (lpos>cnt)
{
new MsgDlg(this," Out Of Range....!");
}
else
{
if(lpos==1)
{ta.select(0,charpos[0]);}
else
{ta.select(charpos[lpos-2],charpos[lpos-1]);}
}
}

//////////////////// Code For GoTo Line Number Ends Here
/////////////////////

///////////// Code For Saving Text When Clicking File -> New
//////////////

else if(stt==2)
{
start=0;
String st = ta.getText();
FileDialog fd = new FileDialog(this,"Save",FileDialog.SAVE);
fd.setVisible(true);
fname= fd.getDirectory()+fd.getFile();

if(fname!="")
{
try{
FileOutputStream fo = new FileOutputStream(fname);
int i;
for(i=0;i {
fo.write(st.charAt(i));
}
ta.setText("");
Font ft = new Font("Times New Roman",0,12);
ta.setFont(ft);
setTitle("Untitled - Java");
} catch(IOException ie) {}
}
}

////////// Code For Saving Text When Clicking File -> New Ends Here
////////////

/////////////////////////////////// Code For Finding Given Text
//////////////////////////////////

else if(stt==3)
{
replaceflg=1;
si=ta.getText().indexOf(txt,start);
if(si<0)
{
start=0;
new MsgDlg(this,"Now....! Word Not Found");
replaceflg=0;
}

else
{
ta.select(si,si +txt.length());
start = si + txt.length();
}
}

//////////////////////////// Code For Finding Given Text Ends Here
///////////////////////////

/////////////////////////////////// Code For Replacing Given Text
/////////////////////////////////

else if (stt==4)
{
if (replaceflg!=0)
{
StringBuffer sb = new StringBuffer(txt);
String blk="";
pos=ta.getCaretPosition();
int e=pos+txt1.length();
ta.replaceRange(blk,pos,e);
ta.insert(txt1,pos);
replaceflg=0;
}
}

/////////////////////////// Code For Replacing Given Text Ends Here
/////////////////////////

else if (stt==5)
{
start=0;
ta.setText("");
setTitle("Untitled - Java");
Font ft = new Font("Times New Roman",0,12);
ta.setFont(ft);
ta.setCaretPosition(0);
}

else if (stt==0)
{ start=0;
ta.setText(ta.getText());
}

else if(!(stt >= 0 && stt <= 5))
{
start=0;
ta.setText("");
}
}

/////////////////////////////////////// End Of getvalue From
Dialog Box //////////////////////////////////////


///////////////////////// For Checking Whether The Key Is
Pressed Or Not ////////////////////////////

public void textValueChanged(TextEvent te)
{keypres=1;}

////////////////////////////////////////// Text Event Ends Here
///////////////////////////////////////////////////////


////////////////// To Check Whether The Menu Options Are Checked
Or Not //////////////////

public void actionPerformed(ActionEvent ae)
{
if(ae.getActionCommand() == "New")
{
flg=0;
if (keypres==1)
{
MyDialog md;
md = new MyDialog(this,"New",3,this," Save file (Yes/No)?
");
}
else
{
ta.setText("");
Font ft = new Font("Times New Roman",0,12);
ta.setFont(ft);
}
}

else if(ae.getActionCommand() == "Open...")
{
ta.setCaretPosition(0);
String tempfname = "Untitled";
if (openflg != 0) { tempfname=fname; }
flg = 0;
FileDialog fd = new FileDialog(this,"Open");
fd.setVisible(true);
fname = fd.getDirectory() + fd.getFile();

if (tempfname.equals("null")) {setTitle("Untitled - Java");}
else
{
openflg = 1;
if(fname.equals("nullnull")){fname=tempfname;}
efile = fd.getFile();
setTitle(fname + " - Java");
try{
FileInputStream fi = new FileInputStream(fname);
int size = fi.available();
byte data[] = new byte[size];
fi.read(data,0,size);
ta.setText(new String(data));
}catch(FileNotFoundException fe){}
catch(IOException ie){}

}

}

else if(ae.getActionCommand() == "Save")
{
String st = ta.getText();
if(flg==0)
{
String tempfname ="Untitled";
tempfname = fname;
FileDialog fd = new FileDialog(this,"Save",FileDialog.SAVE);
fd.setVisible(true);
fname = fd.getDirectory() + fd.getFile();
efile=fd.getFile();
setTitle(fname + " - Java");
if(fname=="") flg=0;
else flg=1;
}

if(flg==1)
{
try{
FileOutputStream fo = new FileOutputStream(fname);
int i;
for(i=0;i {
fo.write(st.charAt(i));
}
} catch(IOException ie) {}
}

}

else if(ae.getActionCommand() == "Save As...")
{
String st = ta.getText();
FileDialog fd = new FileDialog(this,"Save As",FileDialog.SAVE);
fd.setVisible(true);

try {
String fname = fd.getDirectory()+fd.getFile();
efile=fd.getFile();
setTitle(fname + " - Java");
FileOutputStream fo = new FileOutputStream(fname);
int i;
for(i=0;i {
fo.write(st.charAt(i));
}
} catch(IOException ie) {}
}

else if(ae.getActionCommand() == "Exit")
{
System.exit(0);
}

else if(ae.getActionCommand()=="Cut")
{
editcp = ta.getSelectedText();
String blk="";
pos=ta.getCaretPosition();
int e=pos+editcp.length();
ta.replaceRange(blk,pos,e);
}

else if(ae.getActionCommand() == "Copy")
{
editcp=ta.getSelectedText();
}

else if(ae.getActionCommand() == "Paste")
{
int i;
i=ta.getCaretPosition();
ta.insert(editcp,i);
}

else if(ae.getActionCommand() == "Find...")
{
MyDialog md;
md = new MyDialog(this,"Find",4,this,"Find
What : ");
}

else if(ae.getActionCommand() == "Replace...")
{
MyDialog md;
md = new
MyDialog(this,"Replace",5,this,"Find What : ");
}

else if(ae.getActionCommand() == "Go To...")
{
MyDialog md;
md = new MyDialog(this,"Goto
Line",2,this,"Line Number : ");
}

else if(ae.getActionCommand() == "Select All")
{
ta.select(0,ta.getText().length());
}

else if(ae.getActionCommand() == "Delete")
{
editcp = ta.getSelectedText();
String blk="";
pos=ta.getCaretPosition();
ta.setCaretPosition(pos);
int e=pos+editcp.length();
ta.replaceRange(blk,pos,e);
}

else if(ae.getActionCommand()=="Compile")
{
Runtime r = Runtime.getRuntime();
try{
Process p = r.exec("javac " + efile);
}
catch ( NullPointerException ee) { }
catch ( Exception e) {}
}

else if(ae.getActionCommand()=="Run")
{
StringBuffer sb=new StringBuffer(efile);
String tstr="";
int i=0;

while(sb.charAt(i)!='.')
{
tstr=tstr+sb.charAt(i);
i++;
}

Runtime r = Runtime.getRuntime();
try{
Process p1 = r.exec("java " + tstr);
}
catch ( NullPointerException ee) { }
catch ( Exception e) {}
}

else if(ae.getActionCommand() == "Font...")
{
new FontDlg(this,this);
}

else if(ae.getActionCommand() == "About...")
{
new About();
}

}

//////////// Checking Whether The Menu Options Are Checked Or Not
Ends Here ///////////////

public static void main(String str[])
{
new Copyright();
Editor e = new Editor();
}
}