1. Effective Java Programming Language Guide
(Java Book Reviews/Books)

...te that these chapters do not teach you basics like ‘how to create objects in Java’ or ‘how to use static methods in Java’. They guide you on the best practices for the respective concepts. The se...

2. Using the Java XML Digital Signature API
(Java EE Tips/XML Digital Signature API)

...d and signed. Here is what a <SignedInfo> element might look like: <CanonicalizationMethod Algorithm= "http://www.w3.org/TR/2001/REC-xml-c14n-20010315#WithComments"/> <Si...

3. Using the VarArgs Language Feature
(Java SE Tips/java.lang)

...ound yourself in the following situation? You need to pass in many instances of the same object type to a method, but you don't know at compile time how many instances there will be. In the past, the ...

4. Covariant return types
(Java SE Tips/java.lang)

This Tech Tip reprinted with permission by java.sun.com You cannot have two methods in the same class with signatures that only differ by return type. Until the J2SE 5.0 release, it was al

5. Why developers should not write programs that call sun packages
(Java SE Tips/java.lang)

...e removed, or they may be moved from one package to another, and it's fairly likely that their interface (method names and signatures) will change. (From the Sun point of view, since we are committed ...