Notepad awt

//Import statements import java.awt.*; //Class definition class Npd extends Frame {     //Variable declaration     MenuBar mr;     Menu fe;     MenuItem n1, o, s, et;     TextArea tax;     public Npd()     {         setTitle("untitled- Notepad");         tax=new TextArea(25,80);         addWindowListener(new MyWindowListener());         mr=new MenuBar();//Object creation         fe=new Menu("File");         n1=new MenuItem("New");         o=new MenuItem("Open...");         s=new MenuItem("Save");         et=new MenuItem("Exit");         file.add(n1);         file.add(o);         file.add(s);         file.addSeparator();         file.add(et);         mbar.add(fe);         setMenuBar(mr);         add(tax);         setSize(400,400);         show();     }     public static void main(String args[])//Main class     {         new Npd();     } }