Tag Archives: Java
Signing Java Applets Using RSA Certificate
Generate a private/public key pair with the RSA algorithm. $ keytool -genkey -keyalg rsa -alias keyname Enter keystore password: password What is your first and last name? [Unknown]: What is the name of your organizational unit? [Unknown]: What is the … Continue reading
Setting Up Log4j Quickstart Guide
Log4j is an open source tool developed for putting log statements into your Java application. It’s allows log statements to remain in shipped code while giving the user the ability to enable logging at runtime without modifying any of the … Continue reading
Setting Default JVM in Ubuntu
There are circumstances where you may need to have more than one version of Java installed, but how do you switch between them? Execute the following command to list the installed JVMs: $ sudo update-alternatives –config java Simply enter the … Continue reading
Java Code Snippet for Sending Email using Gmail SMTP Server
The partial code below shows how to sent an email using the Gmail’s SMTP server: Properties properites = new Properties(); properties.put(“mail.smtp.host”, “smtp.gmail.com”); properties.put(“mail.smtp.port”, “25″); properties.put(“mail.smtp.auth”, “true”); properties.put(“mail.smtp.starttls.enable”, “true”); properties.put(“mail.smtp.socketFactory.port”, “465″); properties.put(“mail.smtp.socketFactory.class”, “javax.net.ssl.SSLSocketFactory”); properties.put(“mail.smtp.socketFactory.fallback”, “false”); Session session = Session.getInstance(properties, new Authenticator() … Continue reading
Java Code Snippet for Parsing Strings into Date
SimpleDateFormat formatter = new SimpleDateFormat (“yyyy-MM-dd”); String input = “2007-05-04″; Date d; try { d = formatter.parse(input); } catch (ParseException e) { e.printStackTrace(); }