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GO OUT AND VOTE My cat sat on my laptop, now the right side of my keyboard types the wrong characters Problem with function inside brackets. more stack exchange communities company blog Stack Exchange Inbox Reputation and Badges sign up log in tour help Tour Start here for a quick overview of the site Help Center Detailed TIKZ: foreach not compatible with calc-library? When does TNG take place in relation to DS9? http://bovbjerg.net/cannot-be/treemap-cannot-be-resolved-to-a-type.php

Not the answer you're looking for? posted 6 years ago Till today i was adding Strings so didn't realized that , but when i added Custom Object the concept was clear . But as you can see from the exception, in actual fact, at this moment, NetworkResponse is using java.util.TreeMap as the implementation for headers. Given the hints solve the puzzle Isn't AES-NI useless because now the key length need to be longer?

Cannot Be Cast To Java.lang.comparable Treeset

TSA broke a lock for which they have a master key. From the atom to the universe, everything, except itself. Ah well SCJP 1.4 - SCJP 6 - SCWCD 5 - OCEEJBD 6 - OCEJPAD 6 How To Ask Questions How To Answer Questions Stephan van Hulst Bartender Posts: 6491

  • You can't use as map key. –Fabio Carello Nov 8 '13 at 12:23 1 TreeMap compares keys before adding them.
  • Join them; it only takes a minute: Sign up putExtra treeMap returns HashMap cannot be cast to TreeMap android up vote 7 down vote favorite 1 I need your help, I
  • Wouter Oet Saloon Keeper Posts: 2700 I like...
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  • It is not clear from your question why you assume that it should be possible to cast headers to ResponseHeaders, but it's just not possible.

If TreeSet / TreeMap could be changed completely, they should have no public constructors but factory methods instead (the constructors become private): public static k = (Comparable

Bug? Treemap Comparable Example How do you enchant items with Lapis Luzuli? Will I get the same result if I use 18-55mm lens at 55mm (full zoom) and 55-200mm lens at 55mm (no zoom), if not, then why? Why does top 50% need a -50% translate offset?

Isn't AES-NI useless because now the key length need to be longer? Treeset Comparator Furlanetto 111 add a comment| Your Answer draft saved draft discarded Sign up or log in Sign up using Google Sign up using Facebook Sign up using Email and Password Every thing works fine when i ad one element. You're saying that you're trying to "wrap HashMap into another class".

Treemap Comparable Example

more stack exchange communities company blog Stack Exchange Inbox Reputation and Badges sign up log in tour help Tour Start here for a quick overview of the site Help Center Detailed The TreeMap will use it internally. –Sotirios Delimanolis Feb 6 '14 at 2:12 Oh, okay, thanks. –Mxt Feb 6 '14 at 2:14 add a comment| up vote 0 down Cannot Be Cast To Java.lang.comparable Treeset Can proliferate be applied to loyalty counters? Treeset Comparable Example In my case some of the values coincide but having different keys.

share|improve this answer answered Nov 8 '13 at 12:26 Dejan 6271722 add a comment| up vote 0 down vote If you really want to use ArrayList as key in TreeMap, then Can a president win the electoral college and lose the popular vote How do unlimited vacation days work? How can I claim compensation? Join them; it only takes a minute: Sign up What causes the ClassCastException: java.util.TreeSet cannot be cast to java.lang.Comparable? Java Treemap Comparator Example

ArrayList class does not implement java.lang.Comparable interface and the TreeMap is expecting the key to implement comparable interface. Word for a Fact Believed by a Sub-Culture Why does Cutie act like this and lesser robots listen to it? To solve this, see this answer: stackoverflow.com/a/19512912/1488669 –fanton Feb 18 at 1:28 sorry, I fixed the missing line but thank fanton. http://bovbjerg.net/cannot-be/treemap-cannot-be-cast-to-comparable.php How can I claim compensation?

Making the generic element / key type bound on Comparable was also not an option because then it wouldn't be possible to create a TreeSet / TreeMap with non-Comparable objects using Java Implement Comparable Start a coup online without the government intervening Find a mistake in the following bogus proof Why dd takes too long? posted 6 years ago Some structures or methods simply require Comparables.

super E>> create() { return new TreeSet(); } public static TreeSet create(Comparator

Problem starts when I add second element. In actuality, you're extending HashMap, not wrapping it. You get a ClassCastException when TreeMap tries to cast the key to a Comparable reference in order to use its compareTo method. Comparable Interface Java The ArrayList class does not define any ordering, so it cannot be used as a key directly.

why does this error keep popping out? Missing } inserted. \int dx = x + C & How to handle a common misconception when writing a Master's thesis? Rob Spoor Sheriff Posts: 20720 68 I like... TreeSet and TreeMap use sorting for their internal storage.

Try our newsletter Sign up for our newsletter and get our top new questions delivered to your inbox (see an example). map1.entryset().removeAll(map2.entrySet()) will remove all duplicates based on key/value pairs. Here's the wrapper: public class ResponseHeader extends HashMap { } and here is the cast protected Response parseNetworkResponse(NetworkResponse response) { try { // Save http headers mResponseHeaders = (ResponseHeader)response.headers; the That would still be a possible type safety problem waiting to happen.

Can a president win the electoral college and lose the popular vote Does Intel sell CPUs in ribbons? Basic Geometric intuition, context is undergraduate mathematics How can the US electoral college vote be so different to the popular vote? Are keywords in resolv.conf case sensitive? So I need another solution, please! –user3729787 Jul 10 '14 at 12:18 | show 5 more comments Your Answer draft saved draft discarded Sign up or log in Sign up

Automated exception search integrated into your IDE Test Samebug Integration for IntelliJ IDEA Root Cause Analysis java.lang.ClassCastException java.util.TreeMap cannot be cast to java.lang.Comparable at java.util.TreeMap.compare() Java RT TreeSet.add java.util.TreeMap.compare(TreeMap.java:1188) java.util.TreeMap.put(TreeMap.java:531) java.util.TreeSet.add(TreeSet.java:255) Professor Lewin: "Which string will break?" / Me: "That one." / Professor Lewin: "Wrong!" When does TNG take place in relation to DS9? HashSet vs. Take a look at TreeMap.put(K key, V value) source codes and you'll clearly see the reasons behind all your questions (TreeSet is based on TreeMap, hence the source reference).

Some structures or methods simply require Comparables. I need the collections to be ordered, so I decided to use "TreeMap" to keep the ordering. Symmetric group action on Young Tableaux How to capture disk usage percentage of a partition as an integer? What android android-intent hashmap treemap share|improve this question asked Dec 19 '12 at 19:55 user1893074 403 For the gory details of what is happening, see my answer here: stackoverflow.com/questions/12300886/…

I am using the Java JungI graph package and Netbeans 7. Wouter Oet Saloon Keeper Posts: 2700 I like... Polyglot Anagrams Robbers' Thread How is the correct air speed for fuel combustion obtained at the inlet of the combustor? Isn't AES-NI useless because now the key length need to be longer?

Ravi Kiran Va Ranch Hand Posts: 2234 I like... Should I report it? That worked: mResponseHeaders.putAll(response.headers); –gmmo Feb 18 at 1:52 add a comment| 1 Answer 1 active oldest votes up vote 0 down vote accepted Instance field headers is defined as public final