Source Code : Servlet: session listener

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Servlet: session listener

  
import java.util.Date;

import javax.servlet.http.HttpSession;
import javax.servlet.http.HttpSessionEvent;
import javax.servlet.http.HttpSessionListener;

public class SessionListen implements HttpSessionListener {

  private int sessionCount;

  public SessionListen() {
    this.sessionCount = 0;
  }

  public void sessionCreated(HttpSessionEvent se) {
    HttpSession session = se.getSession();
    session.setMaxInactiveInterval(60);
    synchronized (this) {
      sessionCount++;
    }
    String id = session.getId();
    Date now = new Date();
    String message = new StringBuffer("New Session created on ").append(
        now.toString()).append("
ID: ").append(id).append("
")
        .append("There are now ").append("" + sessionCount).append(
            " live sessions in the application.").toString();

    System.out.println(message);
  }

  public void sessionDestroyed(HttpSessionEvent se) {

    HttpSession session = se.getSession();
    String id = session.getId();
    synchronized (this) {
      --sessionCount;
    }
    String message = new StringBuffer("Session destroyed"
        + "
Value of destroyed session ID is").append("" + id).append(
        "
").append("There are now ").append("" + sessionCount)
        .append(" live sessions in the application.").toString();
    System.out.println(message);
  }
}



           
         
    
  

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