use a TreeMap if you want the entries to come out sorted. > -----Original Message----- > From: Lakshmeenarayana G G [SMTP:[EMAIL PROTECTED]] > Sent: 23 November 2002 07:27 > To: [EMAIL PROTECTED] > Subject: Re: Hashtable / HashMap Problem. > > Well guys... > I got so confused with all these Collection API.. > At last I sorted the values by using... > > ArrayList alist = new ArrayList(hashmap.values()); > Collections.sort(alist); > > Then with the original map, I am looping through and getting the keys for > the sorted values and in the loop I am feeding it to two Object Arrays. > One > for the Key and one for the Value. > Now the two Object Arrays are having the sorted key values. > > I know this is not efficient way of implementing this solution. > But why SUN has not given the hashmap.sortOnKeys() ?? > Ok if hashMap takes the null values.. then at least they could have given > hashtable.sortOnKeys()...??!!! > > thanks again for your time. > > Cheers.. > L G Goundalkar. > > -----Original Message----- > From: A mailing list about Java Server Pages specification and reference > [mailto:[EMAIL PROTECTED]]On Behalf Of Amit Ghaste > Sent: Saturday, November 23, 2002 1:46 AM > To: [EMAIL PROTECTED] > Subject: FW: Hashtable / HashMap Problem. > > > I wonder why my reply went to the user and not to the list... > > anyways sorry to send it to uy directly > > but u can use java.util.LinkedHashMap as shown below > > Regards > Amit > > -----Original Message----- > From: Amit Ghaste [mailto:[EMAIL PROTECTED]] > Sent: Friday, November 22, 2002 12:32 AM > To: [EMAIL PROTECTED] > Subject: RE: Hashtable / HashMap Problem. > > > internally the hashtable stores object refrences according to hashcodes, > > if u get an enumeration of the stored values or keys, the order is not > predictible > > its the same result with a iterator.... > > since hashmap is similar to hashtable (except that its meathods are not > synched) it will give u the same result > > to preserve order use the LinkedHashMap... this preserves the order when u > retrive it thro the keyset iterator > but its meathods are not synchronized... so if u are doing multi threaded > operation on shared data u need to synch it > > get more info from the api > > if that helps > Amit > > > -----Original Message----- > From: A mailing list about Java Server Pages specification and reference > [mailto:[EMAIL PROTECTED]]On Behalf Of Lakshmeenarayana G G > Sent: Thursday, November 21, 2002 8:51 PM > To: [EMAIL PROTECTED] > Subject: Hashtable / HashMap Problem. > > > Hi, > > I am using Hashtable or HashMap to keep Key-Value pair of elements. > But When I add them, The Hashtable or HashMap gets sorted depending on the > keys. > I want to retain the order in which I have added the key-value pair. > Is there anyway to do it with Hashtable or HashMap ? > > Or Can I use any other Collection type which will have the mapping of > key-value which is not sorted other than two dimensional Array. > > Thanks for the time. > Lakshmeenarayana G G > CLI Division - SysArris Software > Bangalore - India > Tel. No. +91-80-665 4965, 665 5052, 664 2690 Xtn-240 > Fax No. +91-80-665 0374, 655 4285 > http://www.sysarris.com/ > > ========================================================================== > = > To unsubscribe: mailto [EMAIL PROTECTED] with body: "signoff > JSP-INTEREST". > For digest: mailto [EMAIL PROTECTED] with body: "set JSP-INTEREST > DIGEST". > Some relevant FAQs on JSP/Servlets can be found at: > > http://archives.java.sun.com/jsp-interest.html > http://java.sun.com/products/jsp/faq.html > http://www.esperanto.org.nz/jsp/jspfaq.jsp > http://www.jguru.com/faq/index.jsp > http://www.jspinsider.com > > ========================================================================== > = > To unsubscribe: mailto [EMAIL PROTECTED] with body: "signoff > JSP-INTEREST". > For digest: mailto [EMAIL PROTECTED] with body: "set JSP-INTEREST > DIGEST". > Some relevant FAQs on JSP/Servlets can be found at: > > http://archives.java.sun.com/jsp-interest.html > http://java.sun.com/products/jsp/faq.html > http://www.esperanto.org.nz/jsp/jspfaq.jsp > http://www.jguru.com/faq/index.jsp > http://www.jspinsider.com > > ========================================================================== > = > To unsubscribe: mailto [EMAIL PROTECTED] with body: "signoff > JSP-INTEREST". > For digest: mailto [EMAIL PROTECTED] with body: "set JSP-INTEREST > DIGEST". > Some relevant FAQs on JSP/Servlets can be found at: > > http://archives.java.sun.com/jsp-interest.html > http://java.sun.com/products/jsp/faq.html > http://www.esperanto.org.nz/jsp/jspfaq.jsp > http://www.jguru.com/faq/index.jsp > http://www.jspinsider.com --
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