import java.io.*;
import java.net.*;
import java.awt.*;
import java.awt.event.*;
public class TekstiUuring2 extends java.applet.Applet
                          implements ActionListener{
   TextArea ta1=new TextArea();
   TextArea ta2=new TextArea();
   Button nupp1=new Button("Vali fail");
   Button nupp2=new Button("Salvesta");
   Button nupp3=new Button("Ava");
   Button nupp4=new Button();
   Button nupp5=new Button();
   FileDialog fd=new FileDialog(new Frame());
   static final long serialVersionUID=1;
   public TekstiUuring2(){
      setLayout(new BorderLayout());
      Panel keskpaneel=new Panel(new GridLayout(1, 2));
	  Panel alapaneel =new Panel(new GridLayout(1, 5));
	  keskpaneel.add(ta1);
	  keskpaneel.add(ta2);
	  alapaneel.add(nupp1);
	  alapaneel.add(nupp2); 
	  alapaneel.add(nupp3);
	  alapaneel.add(nupp4);
	  alapaneel.add(nupp5);
	  add(keskpaneel, BorderLayout.CENTER);
	  add(alapaneel, BorderLayout.SOUTH);
	  nupp1.addActionListener(this);
	  nupp2.addActionListener(this);
	  nupp3.addActionListener(this); 
	  nupp4.addActionListener(this); 
	  nupp5.addActionListener(this); 
   }
   public void actionPerformed(ActionEvent e){
	  try{
       if(e.getSource()==nupp1){
	     fd.setVisible(true);
		 ta1.setText(fd.getDirectory()+File.separator+fd.getFile());
	   }
	   if(e.getSource()==nupp2){
	      FileWriter fw=new FileWriter(ta1.getText());  
		  String sisu=ta2.getText();
		  fw.write(sisu, 0, sisu.length());
		  fw.close();
	   }
	   if(e.getSource()==nupp3){
		  char[] sisu=new char[(int)new File(ta1.getText()).length()];
	      FileReader fr=new FileReader(ta1.getText());
		  fr.read(sisu);
		  fr.close();
		  ta2.setText(new String(sisu));
	   }
	   if(e.getSource()==nupp4){
	      String aadress=ta1.getText();
		  if(aadress.startsWith("http://")){
		     System.getProperties().put("proxySet", "true");
		     System.getProperties().put("proxyHost", "cache.tlu.ee");
		     System.getProperties().put("proxyPort", "3128");
			 BufferedReader lugeja=new BufferedReader(new InputStreamReader(
			      new URL(aadress).openStream()));
		     ta2.setText("");
			 String rida=lugeja.readLine();
			 while(rida!=null){
  			    ta2.append(rida+"\n");
				rida=lugeja.readLine();
			 }
			 lugeja.close();
		  } else {
		     ta2.setText("Pole veebiaadress");
		  }
	   }
	  }catch(Exception ex){
	    ex.printStackTrace();
	  }
   }
   public static void main(String[] arg){
      Frame f=new Frame();
	  f.add(new TekstiUuring2());
	  f.setSize(500, 300);
	  f.setVisible(true);
   }
}