Just Java™ 2

Comments

Java has comment conventions similar to those of C++. Two slashes together, “//” make the rest of the line a comment, as follows:

i = 0;  // the "to end-of-line" comment

Comments starting with “/*” make all the characters up to and including the first “*/”, be a comment. It might stretch over several lines:

/* the "regular multiline" comment   goes here. */

Commenting out code

Since comments do not nest in Java, to comment out a big section of code, you must either put “//” at the start of every line, or use “/*” at the front and immediately after every embedded closing comment, finishing up with your own closing comment at the end.

You can also use the following around statements you want to temporarily delete:

if ( false ) { ...