📄 mail1.java
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import java.io.*;
import java.net.*;
import java.util.*;
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
public class Mail1{
static Scanner sc, in;
static BufferedWriter out;
static String message="", line = "";
static int newest;
static boolean con = false, start=false;
static Socket soc;
static StringBuffer sb = new StringBuffer();
public static int stat(){
sb.setLength(0);
message = "STAT";
try{
sendmessage(message);
line = in.nextLine();
String abc = "";
System.out.println(line);
abc = line.substring(line.indexOf(" ")+1, line.indexOf(" ", line.indexOf(" ")+1));
System.out.println(abc);
newest = Integer.parseInt(abc);
}catch (Exception e){e.printStackTrace();};
return newest;
}
public static boolean viewm(String no){
start = false;
sb.setLength(0);
sendmessage("retr " + no);
while(!(line = in.nextLine()).equals(".")){
if (line.startsWith("-ERR")){
sb.append("Mail no is not correct!!!\nPlease re-enter.");
return false;
}
if (line.startsWith("Date:")){
start = true;
}
if (start == true)
sb.append(line + "\n");
}
return true;
}
public static boolean delem(String no){
sb.setLength(0);
sendmessage("dele " + no);
if (line.startsWith("-ERR")){
sb.append("Mail no is not correct!!!\nPlease re-enter.");
return false;
}
line = in.nextLine();
sb.append("The mail is deleted.");
return true;
}
public static void connect(String hostname, String username, String password, JLabel change, FirstMail p){
try{
soc = new Socket(hostname, 110);
sc = new Scanner(System.in);
in = new Scanner(soc.getInputStream());
out = new BufferedWriter(new OutputStreamWriter(soc.getOutputStream()));
System.out.println("SERVER>" + in.nextLine());
message = "USER " + username;
sendmessage(message);
line = in.nextLine();
if (line.startsWith("+OK") == false){
change.setText("<html><font color=red>Connection failed!!!</font></html>");
return;
}
message = "PASS " + password;
sendmessage(message);
line = in.nextLine();
if (line.startsWith("+OK") == false){
change.setText("<html><font color=red>Connection failed!!!</font></html>");
return;
}
change.setText("Connection is successful!!");
con = true;
}
catch (UnknownHostException uhe){
change.setText("Host cannot be found!!!");
}
catch (SocketException se){
System.out.println("Socket cannot be created!!!");
}
catch (IOException ioe){
System.out.println("I/O Error!!");
}
catch (Exception e){
System.out.println(e);
Mail1.con = false;
}
}
public static void disconnect(){
try{
in.close();
out.close();
soc.close();
con = false;
}catch (Exception e){
e.printStackTrace();
}
}
public static void sendmessage(String message){
try{
out.write(message + "\r\n");
out.flush();
}catch(Exception e){
e.printStackTrace();
}
}
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