Quotes from Jonathan Knudsen

The fact that variables have types and cannot simply hold any kind of object is another important feature of the language that ensures safety and correctness of code.

When a new object is created, Java allocates storage for it, sets instance variables to their default values, and calls the constructor method for the class to do whatever application-level setup is required.

Version 1.3, Java has allowed for extended precision on platforms that support it. This can introduce extremely small-valued and arcane differences in the results of high-precision operations. Most applications would never notice this, but if you want to ensure that your application produces exactly the same results on different platforms, you can use the special keyword strictfp as a class modifier on the class containing the floating-point manipulation