hello i have written all the code for creating editor. please see this and i stuck up with compiling and executing the programe
import java.awt.*;
import javax.swing.*;
import javax.swing.text.*;
import javax.swing.undo.*;
import java.awt.event.*;
import java.io.*;
import java.lang.*;
import java.util.regex.*;
public class Editor1 extends JFrame implements ActionListener
{
static String select;
BufferedReader br;
JFileChooser fc;
JMenuBar mb;
JScrollPane js;
JMenu file,edit,search,build,run,help;
JMenuItem nw,open,save,saveAs,print,exit,undo,redo,cut,copy,paste,find,replace,goToLineNumber,compile,javadoc,execute;
JTextArea ta;
Font f;
Container c,c1;
String fname;
public Editor1()
{
select=" ";
br=new BufferedReader(new InputStreamReader(System.in));
fc= new JFileChooser();
//go to content pane
c=getContentPane();
//set BorderLayout to c
c.setLayout(new BorderLayout());
//create textarea
ta=new JTextArea(100,100);
//add ta to c
c.add("West",ta);
// creates a scrollbar
js = new JScrollPane(ta,JScrollPane.VERTICAL_SCROLLBAR_ALWAYS,
JScrollPane.HORIZONTAL_SCROLLBAR_ALWAYS);
c.add(js);
//ta.addActionListener(this);
//set font
f=new Font("sansserif",Font.PLAIN,17);
ta.setFont(f);
//create the menubar
mb=new JMenuBar();
//add mb to c
c.add("North",mb);
//create file,edit,search,build,run,help menus
file=new JMenu("File");
edit=new JMenu("Edit");
search=new JMenu("Search");
build=new JMenu("Build");
run=new JMenu("Run");
help=new JMenu("Help");
//add menus to mb
mb.add(file);
mb.add(edit);
mb.add(search);
mb.add(build);
mb.add(run);
mb.add(help);
//create menu items
nw=new JMenuItem("New");
open=new JMenuItem("Open");
save=new JMenuItem("Save");
saveAs=new JMenuItem("Save As");
print=new JMenuItem("Print");
exit=new JMenuItem("Exit");
undo=new JMenuItem("Undo");
redo=new JMenuItem("Redo");
cut=new JMenuItem("Cut");
copy=new JMenuItem("Copy");
paste=new JMenuItem("Paste");
find=new JMenuItem("Find");
replace=new JMenuItem("Replace");
goToLineNumber=new JMenuItem("Go to line number");
compile=new JMenuItem("Compile");
javadoc=new JMenuItem("Javadoc");
execute=new JMenuItem("Execute");
//add menuitems to menus
file.add(nw);
file.add(open);
file.add(save);
file.add(saveAs);
file.addSeparator();
file.add(print);
file.add(exit);
edit.add(undo);
edit.add(redo);
edit.addSeparator();
edit.add(cut);
edit.add(copy);
edit.add(paste);
search.add(find);
search.add(replace);
search.add(goToLineNumber);
build.add(compile);
build.add(javadoc);
run.add(execute);
nw.addActionListener(this);
open.addActionListener(this);
save.addActionListener(this);
saveAs.addActionListener(this);
print.addActionListener(this);
exit.addActionListener(this);
undo.addActionListener(this);
redo.addActionListener(this);
cut.addActionListener(this);
copy.addActionListener(this);
paste.addActionListener(this);
find.addActionListener(this);
replace.addActionListener(this);
goToLineNumber.addActionListener(this);
compile.addActionListener(this);
javadoc.addActionListener(this);
execute.addActionListener(this);
//close the frame
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
}
public void actionPerformed(ActionEvent ae)
{
//to know which item is selected
try
{
if(nw.isArmed())
{
ta.setText(" ");
this.setTitle("SMART JAVA EDITOR-UnTitle.java");
}
//end of new */
if(open.isArmed())
{
int i=fc.showOpenDialog(this);
if(i==JFileChooser.APPROVE_OPTION)
{
fname=fc.getSelectedFile().getName();
FileReader fr=new FileReader(fname);
BufferedReader br1=new BufferedReader(fr,1024);
this.setTitle("SMART JAVA EDITOR-"+fname);
String str;
while(((str=br1.readLine()).length())!=-1)
{
ta.append(str+"\n");
}
br1.close();
}
} //end of open
if(save.isArmed())
{
fname=getTitle();
if(fname.equals("SMART JAVA EDITOR-Untitle.java"))
{
int i=fc.showSaveDialog(this);
if(i==JFileChooser.APPROVE_OPTION)
{
fname=fc.getSelectedFile().getName();
}
}
setTitle("SMART JAVA EDITOR-"+fname);
String str;
FileWriter fw=new FileWriter(fname);
BufferedWriter bw=new BufferedWriter(fw,1024);
str=ta.getText();
for(int j=0;j<str.length();j++)
{
bw.write(str.charAt(j));
}
bw.close();
} //end of save
if(saveAs.isArmed())
{
int i=fc.showSaveDialog(this);
if(i==JFileChooser.APPROVE_OPTION)
{
fname=fc.getSelectedFile().getName();
setTitle("SMART JAVA EDITOR-"+fname);
String str;
FileWriter fw=new FileWriter(fname);
BufferedWriter bw=new BufferedWriter(fw,1024);
str=ta.getText();
for(int j=0;j<str.length();j++)
{
bw.write(str.charAt(j));
}
bw.close();
}
} //end of saveAs
/*if(print.isArmed())
{
} //end of print*/
if(exit.isArmed())
{
System.exit(0);
} //end of exit
/* if(undo.isArmed())
{
// UndoRedoDemo urd=new UndoRedoDemo(this.ta,"undo");
//ta.undo();
}*/
/* if(redo.isArmed())
{
}*/
if(cut.isArmed())
{
select=ta.getSelectedText();
ta.cut();
} //end of cut
if(copy.isArmed())
{
ta.copy();
select=ta.getSelectedText();
} //end of copy
if(paste.isArmed())
{
if(!(select.equals(" ")))
ta.paste();
} //end of paste
if(find.isArmed())
{
FindDemo fd=new FindDemo(this.ta);
} //end of find
if(replace.isArmed())
{
ReplaceDemo rd=new ReplaceDemo(this.ta);
} //end of replace
if(goToLineNumber.isArmed())
{
GoToLineNumberDemo gd= new GoToLineNumberDemo(this.ta);
} //end of goToLineNumber
/* if(compile.isArmed())
{
Class c=Class.forName("sairam");
//String xxx="Editor1";
Boolean b=Compiler.compileClass(c);
System.out.println(b);
}*/ //end of compile
/*if(javadoc.isArmed())
{
} //end of javadoc*/
if(execute.isArmed())
{
Runtime rt=Runtime.getRuntime();
Process prc=rt.exec(Editor1);
InputStreamReader is=new InputStreamReader(prc.getInputStream());
} //end of execute
} //end of try
catch(IOException ie)
{
} //end of catch
catch(CannotUndoException be)
{
}
catch(NullPointerException ne)
{
}
catch(ClassNotFoundException c)
{
System.out.println("class");
}
} //end of paint()
public static void main(String args[])throws IOException
{
//create the frame
Editor1 e=new Editor1();
e.setTitle("SMART JAVA EDITOR-Untitle.java");
e.setSize(800,600);
e.setVisible(true);
}
}
