Talend Java Tips
This site is about Talend and will not try and be a Java tutorial as well; however, it is important to remember that Talend is a Java code-generator. This means that, often, when you want to know how to do something in Talend, Java is the way to do it.
A simple example may be how you get the current User's home directory or working directory...
System.getProperty("user.home");
System.getProperty("user.dir");
Read more about System Properties.
Later tutorials will expand on this, including how to load custom Java libraries.