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Page 1 of 14 12311 ... LastLast
Threads 1 to 50 of 659

Forum: Collections and Generics

Arrays, ArrayList, HashMap..

  1. convert arraylist to a hash map

    Started by nadman123, October 7th, 2008 05:16 PM
    • Replies: 1
    • Views: 52,292
    maheshrpm
    July 29th, 2009, 04:24 AM Go to last post

  2. [SOLVED] Cannot infer type arguments for ArrayList<>

    Started by mallorz, May 1st, 2014 04:06 PM
    • Replies: 7
    • Views: 51,563
    Norm
    May 1st, 2014, 04:51 PM Go to last post

  3. error: array required, but String found

    Started by 13whispers, April 19th, 2018 04:18 PM
    • Replies: 3
    • Views: 19,460
    13whispers
    April 20th, 2018, 11:39 AM Go to last post

  4. TreeMap vs HashMap

    Started by Kerr, March 9th, 2011 07:23 AM
    • Replies: 7
    • Views: 14,611
    Kerr
    March 10th, 2011, 10:12 AM Go to last post

  5. Ordering items but a bit more complex then just swapping items

    Started by alfa86, July 12th, 2019 07:52 AM
    2 Pages •
    1 2
    • Replies: 26
    • Views: 14,009
    Norm
    July 13th, 2019, 06:12 PM Go to last post

  6. ArrayList Problem

    Started by Marty, June 16th, 2009 12:56 AM
    arraylist, random arraylist
    • Replies: 16
    • Views: 11,867
    Brt93yoda
    August 31st, 2010, 03:47 AM Go to last post

  7. Help with Finding Max and Min Values of ArrayList

    Started by CheekySpoon, March 1st, 2011 03:51 PM
    • Replies: 3
    • Views: 11,484
    Junky
    March 2nd, 2011, 08:57 PM Go to last post

  8. Returning Random Strings from an Array

    Started by cfmonster, September 3rd, 2009 11:03 PM
    • Replies: 3
    • Views: 11,402
    vivekmk
    September 8th, 2009, 11:13 PM Go to last post

  9. how to compare two set values

    Started by humdinger, March 13th, 2010 09:34 AM
    • Replies: 1
    • Views: 11,026
    copeg
    March 13th, 2010, 11:46 AM Go to last post

  10. [SOLVED] Java program to sort arrays containing dates

    Started by scottyadam, March 1st, 2009 12:10 AM
    • Replies: 1
    • Views: 10,905
    leandro
    March 9th, 2009, 06:08 PM Go to last post

  11. game development- collision detection question

    Started by david37370, July 7th, 2013 04:50 PM
    collision detection, game, game developing, games arcade, programming
    • Replies: 11
    • Views: 10,628
    GregBrannon
    July 21st, 2013, 12:54 PM Go to last post

  12. What is the fastest and most memory-efficient data structure?

    Started by aussiemcgr, November 20th, 2010 10:37 PM
    • Replies: 5
    • Views: 10,330
    Australianfrog
    October 11th, 2012, 03:48 PM Go to last post

  13. converting array into arraylist

    Started by Harry Blargle, October 2nd, 2011 09:00 AM
    • Replies: 6
    • Views: 10,271
    abani
    October 30th, 2011, 03:38 AM Go to last post

  14. Question retrieve data from database using Hashmap (multiple values in one key)

    Started by ashin12, March 31st, 2012 11:33 PM
    • Replies: 2
    • Views: 10,141
    gaszabo
    April 4th, 2012, 05:22 AM Go to last post

  15. Java program to do Matrix operation

    Started by saladfingers73, February 1st, 2009 06:11 PM
    • Replies: 5
    • Views: 9,637
    arvindbis
    March 7th, 2012, 09:17 AM Go to last post

  16. Iterating over collections in Java 8

    Started by yhqian99, August 24th, 2014 09:53 AM
    • Replies: 5
    • Views: 9,477
    meenal
    October 19th, 2018, 12:49 AM Go to last post

  17. Creating multiple arraylists with a loop?

    Started by DLX, December 27th, 2010 09:10 AM
    • Replies: 4
    • Views: 9,472
    DLX
    December 28th, 2010, 06:58 PM Go to last post

  18. Cool Eliminating Duplicates in an Array

    Started by m2msucks, October 23rd, 2011 01:09 AM
    • Replies: 4
    • Views: 9,393
    abani
    October 30th, 2011, 03:03 AM Go to last post

  19. Java program for 2-D Array Maze

    Started by Peetah05, May 1st, 2009 12:43 AM
    • Replies: 11
    • Views: 9,186
    JavaPF
    May 8th, 2009, 04:30 AM Go to last post

  20. Pick random objects from array/arraylist. Newbie.

    Started by Sputnik, October 23rd, 2010 01:41 PM
    • Replies: 3
    • Views: 9,154
    Sputnik
    October 29th, 2010, 11:59 AM Go to last post

  21. Binding object

    Started by marcobelli, May 31st, 2013 10:41 AM
    binding
    • Replies: 1
    • Views: 9,044
    angstrem
    May 31st, 2013, 11:19 AM Go to last post

  22. [SOLVED] Sets and creating a new set containing a common number

    Started by mds1256, February 25th, 2010 09:02 AM
    • Replies: 2
    • Views: 9,041
    mds1256
    February 26th, 2010, 06:00 PM Go to last post

  23. Object array to int array?

    Started by rsala004, October 30th, 2009 12:57 AM
    • Replies: 1
    • Views: 8,997
    Json
    October 30th, 2009, 04:09 AM Go to last post

  24. Expanding the capacity of an array

    Started by dubois.ford, April 6th, 2010 02:58 PM
    • Replies: 5
    • Views: 8,881
    dlorde
    May 7th, 2010, 05:58 AM Go to last post

  25. Different operation on Array

    Started by jempot, January 11th, 2009 06:44 AM
    • Replies: 4
    • Views: 8,435
    JavaPF
    January 27th, 2009, 06:07 AM Go to last post

  26. ArrayList and making a Menu

    Started by Silver, January 27th, 2010 07:01 PM
    • Replies: 2
    • Views: 8,378
    Silver
    January 28th, 2010, 03:29 AM Go to last post

  27. dynamically resizing 2d array

    Started by Flamespewer, March 1st, 2010 05:37 PM
    • Replies: 2
    • Views: 8,246
    helloworld922
    March 2nd, 2010, 11:10 AM Go to last post

  28. Angry Changing Array variables from different classes

    Started by smellyhole85, December 9th, 2010 07:42 AM
    • Replies: 6
    • Views: 7,880
    javapenguin
    December 9th, 2010, 03:18 PM Go to last post

  29. [SOLVED] 2D Vector

    Started by nasi, April 16th, 2010 07:55 PM
    2d vector
    • Replies: 2
    • Views: 7,526
    mentalica1102
    May 6th, 2010, 01:42 AM Go to last post

  30. Playlist Shuffle with Collections.shuffle(......)

    Started by TmDee, May 13th, 2019 12:18 PM
    collections shuffle, java, playlist
    • Replies: 1
    • Views: 7,264
    jim829
    May 13th, 2019, 03:37 PM Go to last post

  31. Question Array of contacts (address book)

    Started by smush, March 29th, 2010 09:32 PM
    address, array, book, java, swing
    • Replies: 11
    • Views: 7,261
    vincom1111
    April 29th, 2010, 03:08 AM Go to last post

  32. Fill & sort an array

    Started by yroll, March 31st, 2010 03:12 PM
    • Replies: 2
    • Views: 7,179
    Freaky Chris
    April 1st, 2010, 06:00 AM Go to last post

  33. Unhappy How to print the same 2D Array Vertically and Horizontally

    Started by rayan2004, November 23rd, 2012 02:07 AM
    2d array, student, vertically
    • Replies: 8
    • Views: 7,094
    aesguitar
    November 25th, 2012, 04:06 PM Go to last post

  34. Writing clone() method for LinkedList

    Started by vluong, October 26th, 2009 06:51 PM
    • Replies: 6
    • Views: 7,044
    Json
    October 27th, 2009, 08:41 AM Go to last post

  35. sieve of eratosthenes

    Started by rsala004, October 27th, 2009 05:55 AM
    • Replies: 5
    • Views: 7,010
    vasidi
    December 29th, 2010, 10:37 AM Go to last post

  36. How to make set to allow duplicate values... Please help me!!!

    Started by JavaKiddo, December 27th, 2011 04:00 PM
    collections, list, set
    • Replies: 9
    • Views: 6,896
    KevinWorkman
    January 4th, 2012, 08:22 AM Go to last post

  37. ArrayList<String> convert to lowercase

    Started by s_mehdi76, October 30th, 2010 11:19 AM
    arraylist<string> lowercase
    • Replies: 1
    • Views: 6,837
    copeg
    October 30th, 2010, 09:05 PM Go to last post

  38. filling an array with strings

    Started by exose, February 18th, 2011 06:09 AM
    • Replies: 3
    • Views: 6,797
    JavaPF
    February 18th, 2011, 09:44 AM Go to last post

  39. override list add method?

    Started by ober0330, July 15th, 2011 01:37 PM
    • Replies: 10
    • Views: 6,770
    ober0330
    July 17th, 2011, 07:34 PM Go to last post

  40. Post Multi-dimension ArrayList example

    Started by adeola, March 15th, 2010 05:30 AM
    • Replies: 3
    • Views: 6,602
    okello
    March 26th, 2010, 03:23 AM Go to last post

  41. Implementing Multiple Interfaces with Generics

    Started by darkestfright, February 10th, 2010 02:09 PM
    • Replies: 5
    • Views: 6,601
    copeg
    February 10th, 2010, 08:44 PM Go to last post

  42. Buffered Reader to J Option

    Started by jk_0821, July 12th, 2010 09:20 AM
    • Replies: 13
    • Views: 6,480
    aussiemcgr
    July 19th, 2010, 03:14 PM Go to last post

  43. Family Tree in Java

    Started by Bobben92, November 20th, 2012 07:09 AM
    • Replies: 3
    • Views: 6,402
    KevinWorkman
    November 20th, 2012, 09:28 AM Go to last post

  44. accessing elements in a 2d ArrayList

    Started by Flamespewer, March 8th, 2010 05:23 PM
    • Replies: 2
    • Views: 6,381
    Flamespewer
    March 8th, 2010, 06:11 PM Go to last post

  45. PhoneBook entries with ArrayList problem

    Started by gpelefty9, October 24th, 2011 10:48 PM
    • Replies: 3
    • Views: 6,344
    abani
    October 30th, 2011, 03:32 AM Go to last post

  46. [SOLVED] javabat example makeLast

    Started by Truffy, June 30th, 2009 10:34 PM
    • Replies: 3
    • Views: 6,339
    Truffy
    July 5th, 2009, 08:25 PM Go to last post

  47. Cool Using the ArrayList Class

    Started by m2msucks, November 20th, 2011 02:28 AM
    • Replies: 9
    • Views: 6,309
    m2msucks
    November 21st, 2011, 02:22 PM Go to last post

  48. Java API - JTA

    Started by Venkatesa Perumal, August 27th, 2013 12:54 AM
    • Replies: 1
    • Views: 6,297
    jps
    August 27th, 2013, 01:11 AM Go to last post

  49. Arraylist Save and Load

    Started by frankycool, November 14th, 2009 03:25 AM
    arraylist, arraylist io object, arrays, input, output
    • Replies: 1
    • Views: 6,008
    Json
    November 14th, 2009, 06:48 AM Go to last post

  50. Creating an Expression Tree

    Started by vluong, November 28th, 2009 11:41 PM
    • Replies: 0
    • Views: 5,925
    vluong
    November 28th, 2009, 11:41 PM Go to last post
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