I installed java today and created the traditional hello world console application called first.java. I set the PATH stuff and whatnot, and the Sun tutorial says type in "javac first.java".

The Java programming language compiler (javac) provided by Oracle (and formerly by Sun) has several non-standard options that are often useful. One of the most useful is the set of non-standard ...

Often you may want to test a single piece of code. For example, say you forget how the % operator works with negative numbers, or you must determine how a certain API call operates. Writing, compiling ...