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How To Sort An ArrayList In Java

Core Java » on Feb 17, 2014 { 4 Comments } By Sivateja

This is one of the famous interview questions for freshers and even for the experienced developers :-) let us see how to sort the ArrayList in java. We have a class Collections in java.util package, which will do this magic for us. Consider an example…

Output

Printing List before sorting……
22
33
11
cc
bb
aa
Printing List after sorting……
11
22
33
aa
bb
cc

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Comments

4 Responses to “How To Sort An ArrayList In Java”
  1. mani says:

    the above program doest produce expected output…
    there is a problem in sorting…
    any one tell me the reason…???

  2. CAN U PLEASE WRITE THE ABOVE PROGRAM WITHOUT USING COLLECTIONS.SORT()METHOD

  3. Tarique Anwer says:

    How Collections.sort(al) methods invokes the compare() of Comparator or compareTo() of Comparable interface in case of custom sorting.
    It will be great if you could explain only internal working for the same. I know the implementations.

  4. MOHAMMAD SALEEM BASHA says:

    I need a java code for following question

    1. how to find missing elements in an array,if i give input like 1,2,3,4,7,8. the output will be generated as the missing elements are 5,6.

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