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POSort my ojects which are parsed from json data
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  1. POSort my ojects which are parsed from json data
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    copied!<p>My Android client get server JSON response as follows:</p> <pre><code>{"students":[{"id":1,"name":"John","age":12}, {"id":2,"name":"Thmas","age":13} {"id":3,"name":"Merit","age":10} ...]} </code></pre> <p>My Android client code parses the JSON response to Java object by using <a href="http://code.google.com/p/google-gson/">gson</a>.</p> <p>My corresponding Java classes:</p> <pre><code>public class StudentList{ private List&lt;Student&gt; students; public List&lt;Student&gt; getStudents(){ return students; } } public class Student{ private long id; private String name; private int age; public long getId() { return id; } public String getName(){ return name; } public int getAge(){ return age; } } </code></pre> <p>Everything works fine for me at this point, I can successfully parse JSON data to my Java objects, like following:</p> <pre><code>//'jsonData' is the server responsed json data StudentList students = gson.fromJson(jsonData, StudentList.class) </code></pre> <p>Then, I would like to modify a bit to get the <code>students</code> (from <code>json</code> data) in an <strong>alphabetic order, sorted by</strong> student's <code>name</code>. I tried the following way: (I changed the <code>Student</code> class to implement the <code>Comparable&lt;&gt;</code> interface):</p> <pre><code>public class Student implements Comparable&lt;Student&gt;{ private long id; private String name; private int age; public long getId() { return id; } public String getName(){ return name; } public int getAge(){ return age; } // Override compareTo(), sort by 'name' @Override public int compareTo(Student obj) { return this.getName().compareToIgnoreCase(obj.Name()); } } </code></pre> <p>With above modified <code>Student</code> class, I tried to parse the json data again :</p> <pre><code>//'jsonData' is the server responsed json data StudentList students = gson.fromJson(jsonData, StudentList.class) </code></pre> <p>But the resulted <code>students</code> are still the same as before the sorting. My sorting solution does not work at all. <strong>Why?? Where am I wrong??</strong></p>
 

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