Solved

Rewind enumeration

Posted on 2006-11-05
8
653 Views
Last Modified: 2012-05-05
Enumeration keys = hashtable.keys();
while(keys.hasMoreElements()){
      Vector vConsultn=(Vector) hashtable.get(keys.nextElement());
}

//rewind the keys again<--how to do this??

while(keys.hasMoreElements()){
      Vector vabc=(Vector) hashtable.get(keys.nextElement());
}

0
Comment
Question by:william007
  • 2
  • 2
  • 2
  • +2
8 Comments
 
LVL 14

Accepted Solution

by:
hoomanv earned 250 total points
ID: 17879113
Impossible
You should get the Enumeration again
0
 
LVL 10

Assisted Solution

by:kupra1
kupra1 earned 100 total points
ID: 17879225
There is only one way out i.e. get the keys again from the collection.
So, put this statement again after the first loop.
        Enumeration keys = hashtable.keys();

Once you have looped over the enumeration, the cursor stays after the last element of the enumeration. So, you need to get another enumeration from the same collection.
0
 
LVL 14

Expert Comment

by:hoomanv
ID: 17879259
kupra1, Please respect the rules
Comment a solution that has not been mentioned by others yet
You did the same in other Qs
0
 
LVL 86

Assisted Solution

by:CEHJ
CEHJ earned 150 total points
ID: 17879298
You could do


List values = Collections.list(enumeration);
0
Is Your Active Directory as Secure as You Think?

More than 75% of all records are compromised because of the loss or theft of a privileged credential. Experts have been exploring Active Directory infrastructure to identify key threats and establish best practices for keeping data safe. Attend this month’s webinar to learn more.

 
LVL 11

Expert Comment

by:Manish
ID: 17879535
Enumeration keys1 = hashtable.keys();
while(keys1 .hasMoreElements()){
     Vector vabc=(Vector) hashtable.get(keys1 .nextElement());
}
0
 
LVL 11

Expert Comment

by:Manish
ID: 17879539
sorry , I didnt see previous comments.
0
 
LVL 9

Author Comment

by:william007
ID: 17932840
Thanks:-)
0
 
LVL 86

Expert Comment

by:CEHJ
ID: 17932861
:-)
0

Featured Post

Is Your Active Directory as Secure as You Think?

More than 75% of all records are compromised because of the loss or theft of a privileged credential. Experts have been exploring Active Directory infrastructure to identify key threats and establish best practices for keeping data safe. Attend this month’s webinar to learn more.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Title # Comments Views Activity
Java 1603 Error 3 50
topping1 challenge 7 73
base64 decode encode 12 119
How to convert String matching to regex in java 4 19
For customizing the look of your lightweight component and making it look lucid like it was made of glass. Or: how to make your component more Apple-ish ;) This tip assumes your component to be of rectangular shape and completely opaque. (COD…
Introduction Java can be integrated with native programs using an interface called JNI(Java Native Interface). Native programs are programs which can directly run on the processor. JNI is simply a naming and calling convention so that the JVM (Java…
Viewers learn how to read error messages and identify possible mistakes that could cause hours of frustration. Coding is as much about debugging your code as it is about writing it. Define Error Message: Line Numbers: Type of Error: Break Down…
The viewer will learn how to implement Singleton Design Pattern in Java.

911 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

20 Experts available now in Live!

Get 1:1 Help Now