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    <p>You need to write a <a href="http://java.sun.com/javase/6/docs/api/java/util/Comparator.html" rel="nofollow noreferrer"><code>Comparator&lt;MyObject&gt;</code></a> and use <a href="http://java.sun.com/javase/6/docs/api/java/util/Collections.html#sort%28java.util.List,%20java.util.Comparator%29" rel="nofollow noreferrer"><code>Collections.sort(List&lt;T&gt;, Comparator&lt;? super T&gt;</code></a> to sort your <code>List</code>.</p> <p>Or else, your <code>MyObject</code> can also <a href="http://java.sun.com/javase/6/docs/api/java/lang/Comparable.html" rel="nofollow noreferrer"><code>implements Comparable&lt;MyObject&gt;</code></a>, defining a <em>natural ordering</em> that compares on your specific attribute, and then use <a href="http://java.sun.com/javase/6/docs/api/java/util/Collections.html#sort%28java.util.List%29" rel="nofollow noreferrer"><code>Collections.sort(List&lt;T&gt;</code></a> instead.</p> <h3>See also</h3> <ul> <li><a href="http://download.oracle.com/docs/cd/E17409_01/javase/tutorial/collections/interfaces/order.html" rel="nofollow noreferrer">Java Tutorials/Object Ordering</a></li> </ul> <h3>Related questions</h3> <p>On sorting <code>List</code> on various criteria:</p> <ul> <li><a href="https://stackoverflow.com/questions/1814095/sorting-an-arraylist-of-contacts">Sorting an ArrayList of Contacts</a></li> </ul> <p>On <code>Comparator</code> and <code>Comparable</code></p> <ul> <li><a href="https://stackoverflow.com/questions/2266827/when-to-use-comparable-vs-comparator">When to use Comparable vs Comparator</a></li> <li><a href="https://stackoverflow.com/questions/420223/difference-between-compare-and-compareto">difference between compare() and compareTo()</a></li> <li><a href="https://stackoverflow.com/questions/2858628/comparable-and-comparator-contract-with-regards-to-null">Comparable and Comparator contract with regards to null</a></li> <li><a href="https://stackoverflow.com/questions/2892947/why-does-the-java-collections-framework-offer-two-different-ways-to-sort/">Why does the Java Collections Framework offer two different ways to sort?</a></li> </ul>
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    1. POSorting ArrayList of Objects by Object attribute
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    1. COThanks! :) Can you elaborate more about the use of comparator and how it will return me sorted objects according to string. Note that I need to sort them in alphabetical order of String.
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    2. COOh. Got the idea about comparator. But I cant implement this interface on the Object because of some other issues. So I need to make Comparator object.
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    3. CO@Vishal: look at the linked question (Sorting an ArrayList of Contacts). It has the examples you're looking for and more. Also, _Effective Java 2nd Edition, Item 12: Consider implementing Comparable_
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