StringTokenizer

Question

I'm trying to learn about StringTokenizer and I have a few questions.
1) Can someone give me some good links to learn about the subject?
2) By the way, does anyone else find Suns documentation confusing? Or am I just not advanced enough? For example: http://java.sun.com/j2se/1.3/docs/api/java/util/StringTokenizer.html
gives the code snippet:
StringTokenizer st = new StringTokenizer("this is a test");
while (st.hasMoreTokens()) {
     println(st.nextToken());
Why do they use an incomplete print statement?
'println();' instead of 'System.out.println();'
To me ten minutes to figure out what was wrong.
3) Which is a better import statement?
import java.util.*; // Is this too general and inefficient?
or
import java.util.StringTokenizer; // Is this too specific?

Answer 1

wynship wrote:
If you put "import java.lang.System.out.*", then you can just use "println" by itself. If you do "import java.lang.System.*", then you use "out.println". You get the idea?
wynship, have you every try it? You can't do that. You can only import classes not methods or variables in a class.
igottaknow wrote:
Can someone give me some good links to learn about the subject?
StringTokenizer is easy to use. There are only three constructors and size methods. If you read the doc carefully, you should be able to understand.
StringTokenizer st = new StringTokenizer("this is a test");
while (st.hasMoreTokens()) {
    println(st.nextToken());
}igottaknow, this is only a part of a method (or main), you should not confusing yourself when you see codes like this. When you see this kind of code, you should consider the method or variable is already declared.
Which is a better import statement?
This is personal preference. Personally, I like to write out what class(es) I am importing, so it is easy to track down errors. However, if you are importing many classes in the same package and do not like to write out every classes you import, you could use the asterisk. As for whether using asterisk is inefficient or not, it doesn't matter because import is not the include in C/C++.