Special directives for javac

Question

Hi. Lately I been coding back in C/C++ and there is a little thing i miss in java. Directives like #error or #warning. I use them to mark code I know it's working and a little descriptive message.
Also things like #ifdef, etc. Is there anything similar in java?

Answer 1

Since 1.4 there is the assertion facility.
http://java.sun.com/j2se/1.4.2/docs/guide/lang/assert.html
You can use your favourite precompiler to preprocess Java source too.
posman@linux:~/ivan> cat xx.c
public class xx {
        private final static String when = __DATE__ ;
        public static void main(String args[]) {
                System.out.println(when);
�
posman@linux:~/ivan> gcc -E -P xx.c >xx.java
posman@linux:~/ivan> javac xx.java
posman@linux:~/ivan> java xx
Jun  7 2005