java code review?

[agoel321]

Hi

I have some code segments. can someone please review it and tell me the problems if any?

1.)
String a=null;
if (a!=null & a.length()>10) {
System.out.println(“Inside if”);
}
System.out.println(“Outside if”);


2.)
int m = 0;
while( m++ < 2 )
System.out.println( m );
3.)

Hashtable hashtable = new Hashtable();
hashtable.put("One", “1”);
hashtable.put("Two", “2”);
hashtable.put("One", “1”);

while(hashtable.keys().hasMoreElements() ){
System.out.println(hashtable.keys().nextElement());
}

Thanks for your time.

Regards
Arvind

[Norm]

Have you compiled and executed all the the code samples?
What was the results?
The compiler is very good at find syntax errors.
Executing a program often finds logic errors.

[dlorde]

Given the code, this looks very much like a homework exercise.

However, if you make some effort to review the code yourself, we'll tell you what we think of your review.

It is easier to measure something than to understand what you have measured...
Anon.

[blaurent]

It is easier to measure something than to understand what you have measured...
Anon.

Love the quote!

But yes, it appears to be a homework assignment. Why don't you just run it and see what it does. Then read through the code and try to understand how these results were produced? If you fail to do this last part, you can always come back and ask for help.

Hope this helped,

Laurent