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How to sort ArrayList in java, Sorting java Collections

Core Java » on Oct 23, 2012 { 4 Comments } By Sivateja

Let us see how to sort values in java collections, List/ArrayList.  We can achieve this by using Collections class, Collections class contains a method sort(Collection Object), just give your collection object to the sort() method that’s it, consider this example….

SortCollection.java

package java4s;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.List;

public class SortCollection {

	public static void main(String... args)
	{

		    List li = new ArrayList();

		    li.add("India");
		    li.add("United States");
		    li.add("Malaysia");
		    li.add("Australia");
		    li.add("Lundon");

		    Collections.sort(li);

			for(String temp: li)
			{
				System.out.println("Countries : "+temp);
			}
	}
}

Output

Countries : Australia
Countries : India
Countries : Lundon
Countries : Malaysia
Countries : United States

​​

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Comments

4 Responses to “How to sort ArrayList in java, Sorting java Collections”
  1. Can You Please Update the Jasper Reporting Tool

  2. kumar says:

    can we please write the code to display arraylist elements in dropdown

    ex
    if click on country it disply the state dropdown

  3. saif says:

    My Question is—— if we remove element from Arraylist index basis.how to find which element is removed from arraylist.mean find removed element

    plz sir……………..

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