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Incompatible Types: Arraylist> Cannot Be Converted To List>

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Therefore you can't cast it to an ArrayList. Any help would be greatly appreciated. Generics compilation error Serializing/deserializing a list Remove from JList All times are in JavaRanch time: GMT-6 in summer, GMT-7 in winter Contact Us | advertise | mobile view | Powered by How to decline a postdoc interview if there is some possible future collaboration? weblink

Does the requirement really say it has to be a specific List implementation like ArrayList? (Bad form if so -- coding to interfaces is much more versatile.) [Asking smart questions] [About Is Area of a circle always irrational Space of real sequences with finitely many nonzero elements is a Banach space? Build me a brick wall! You're downcasting the result of sublist, but the API specifies that it returns List (not ArrayList). http://stackoverflow.com/questions/10575212/type-mismatch-cannot-convert-from-arraylist-to-list

Incompatible Types: Arraylist> Cannot Be Converted To List>

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I just wanted to be sure that I wasn't missing something simple. Join them; it only takes a minute: Sign up casting Arrays.asList causing exception: java.util.Arrays$ArrayList cannot be cast to java.util.ArrayList up vote 32 down vote favorite 4 I'm new to Java and share|improve this answer answered May 31 '11 at 15:17 helpermethod 16.3k37125204 add a comment| Your Answer draft saved draft discarded Sign up or log in Sign up using Google Sign Java List What is the point of update independent rendering in a game loop?

Drawing a torso with a head (using \draw) Should you change a thermostat when changing your water pump Why is Professor Lewin correct regarding dimensional analysis, and I'm not? Can you survive with a List and avoid the conversion? Build me a brick wall! Third, never use concrete classes at the left of assignment operator.

Even if you are just messing around with the code it would be good practice to start doing it. –Popeye Apr 12 '13 at 11:25 add a comment| 6 Answers 6 Arraylist Java More broadly, you have a classic code style problem: You should be referring to abstract interfaces (ie List), not concrete implementations (ie ArrayList). What is role of palladium in hydrogenation reactions? more hot questions question feed lang-java about us tour help blog chat data legal privacy policy work here advertising info mobile contact us feedback Technology Life / Arts Culture / Recreation

Arraylist To List Java

Why is the 'You talking to me' speech from the movie 'Taxi Driver' so famous? Clicking Here That's your problem. Incompatible Types: Arraylist> Cannot Be Converted To List> share|improve this answer answered Apr 23 '13 at 20:16 Ted Hopp 164k28246350 add a comment| up vote 1 down vote java.util.List is an interface, and the ArrayList allready implementing it, you Java.lang.classcastexception Java.util.arraylist Cannot Be Cast To Object The reason is that the Arrays.asList(..) method does only return a List, not necessarily an ArrayList.

Post Reply Bookmark Topic Watch Topic New Topic Similar Threads String array ClassCastException ArrayList->List Coverting Array to List when i have a int[] array Question on casting getting Class cast exception have a peek at these guys Hence the exception. Arrays.asList() returns its own implementation of a List based on the implementation of the array parameter, which may not be an ArrayList. Here's how your code should look: List> stuff = new ArrayList>(); String[] titles = { "ticker", "grade", "score" }; stuff.add((List) Arrays.asList(titles)); I have tested this code, and it runs without error. Arraylist To Array Java

Someone peeled an American flag sticker off of my truck. Browse other questions tagged java arrays arraylist or ask your own question. This works fine: List> stuff = new ArrayList>(); String[] titles = {"ticker", "grade", "score"}; stuff.add((List) Arrays.asList(titles)); share|improve this answer answered Jul 10 '11 at 12:24 Ant Kutschera 2,00521425 add a comment| check over here You might also want to use type parameters instead of raw types.

You can change this line ArrayList orderNumbers = new ArrayList(); to: List orderNumbers = new ArrayList(); share|improve this answer answered Apr 23 '13 at 20:18 Alex 51839 My issue Why do languages require parenthesis around expressions when used with "if" and "while"? Polyglot Anagrams Robbers' Thread What is the most efficient & fastest way to speed up the installation of packages with thousands of items?

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Arrays.asList() is supposed to return a List, so that means I can correctly cast it to an ArrayList (I guess), but I'm getting this exception. P.s. Photographing Sea Turtles hatching on the beach Will boring a cylinder affect its longevity thereafter? For help clarifying this question so that it can be reopened, visit the help center.If this question can be reworded to fit the rules in the help center, please edit the

What do I do? In your code edit this line: Collection c = (Collection)wws.selectAllProjects(); to Collection c = wws.selectAllProjects().getProject(); The rest will then work as-is. US Election results 2016: What went wrong with prediction models? http://pgexch.com/cannot-be/powershell-invoke-command-argument-list-example.html Related 2110Create ArrayList from array2320Read/convert an InputStream to a String1912When to use LinkedList over ArrayList?254Best way to convert an ArrayList to a string1398Initialization of an ArrayList in one line502Converting 'ArrayList to

You can convert it to a List: List xList; xList = Arrays.asList((Assessment[])oStream.readObject()); or if you must use a java.util.ArrayList : ArrayList xList; xList = new ArrayList<> (Arrays.asList((Assessment[])oStream.readObject())); share|improve this answer I'm trying to convert a ArrayList(String) to a List (or List(String)), but I keep running into a cast exception. Does the electoral vote count ever get reallocated between states? share|improve this answer answered May 31 '11 at 15:13 stevevls 8,22112848 5 I just expected that a sublist of FooList will also be a FooList.

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 asked 3 years ago viewed 1601 times active 5 months ago Upcoming Events 2016 Community Moderator Election ends Nov 22 Related 1050Dealing with “java.lang.OutOfMemoryError: PermGen space” error2110Create ArrayList from array1912When to thank you. –john Apr 23 '13 at 20:24 Personal recommendation, try to use the interface when declaring a variable so you can change the implementation afterwards. share|improve this answer answered Apr 25 '12 at 12:06 Peter Lawrey 354k40400720 add a comment| up vote 0 down vote Consider that Arrays are not collections, there is a utility method

GO OUT AND VOTE How often should I replace windscreen wiper blades? new RandomAccessSubList(this, fromIndex, toIndex) : new SubList(this, fromIndex, toIndex)); } like at the ArrayList's impl, it is return List,as @George Kastrinis said use interface wherever possible. Browse other questions tagged java collections casting or ask your own question. 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

Why can issuing the same command create more output in tty than in pts/gnome-terminal? Oracle and Java are registered trademarks of Oracle and/or its affiliates. You are importing the wrong class: import java.awt.List; vs.