is it legal?

That is the ternary operator:

?:

This code:

int len = (this.libraryUsers == null) ? 0 : this.libraryUsers.length;

Is a short way of doing this:

if (this.libraryUsers == null) {

len = 0;

} else {

len = this.libraryUsers.length;

}

So if you ever want to say "If b is true then x = y, else x = z" you can write:

x = b ? y : z;

BinaryDigita at 2007-7-12 17:42:29 >