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POFail adding objects to an ArrayList. Always copies the same
 

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  1. POFail adding objects to an ArrayList. Always copies the same
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    <p>To add different objects from the database to an <code>ArrayList</code> this is the code that I use:</p> <pre><code>try { Statement stat = con.createStatement(); ResultSet rs = stat.executeQuery("SELECT DISTINCT Id, Username, FirstName, LastName FROM USER WHERE Username LIKE '%"+name+"%' or FirstName LIKE '%"+name+"%' or LastName LIKE '%"+name+"%'"); while (rs.next()){ finded.setUsername(rs.getString("Username")); finded.setFirstName(rs.getString("FirstName")); finded.setLastName(rs.getString("LastName")); finded.setId(rs.getInt("Id")); findList.add(finded); Log.d("this is the content of the List:",((Integer) findList.get(j).getId()).toString()); Log.d("this is the content of the List 0:",((Integer) findList.get(0).getId()).toString()); } con.close(); </code></pre> <p>And this is what the Log.d gives me each time. </p> <pre><code>10-18 08:31:39.407: D/this is the content of the List:(427): 3 10-18 08:31:39.407: D/this is the content of the List 0:(427): 3 10-18 08:31:39.427: D/this is the content of the List:(427): 15 10-18 08:31:39.427: D/this is the content of the List 0:(427): 15 10-18 08:31:39.437: D/this is the content of the List:(427): 13 10-18 08:31:39.437: D/this is the content of the List 0:(427): 13 10-18 08:31:39.447: D/this is the content of the List:(427): 50 10-18 08:31:39.447: D/this is the content of the List 0:(427): 50 10-18 08:31:39.460: D/this is the content of the List:(427): 34 10-18 08:31:39.460: D/this is the content of the List 0:(427): 34 10-18 08:31:39.467: D/this is the content of the List:(427): 49 10-18 08:31:39.467: D/this is the content of the List 0:(427): 49 10-18 08:31:39.479: D/this is the content of the List:(427): 53 10-18 08:31:39.479: D/this is the content of the List 0:(427): 53 </code></pre> <p>As you can see it copies the same object in all the position of the <code>ArrayList</code>. I tried also to do it with <code>findList.add(index, finded)</code> (<code>index</code> is an <code>int</code> who is incrementing) But I get the same result.</p>
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    1. PO
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      1. PTAnswer
    1. This table or related slice is empty.
    1. PTQuestion
    1. USnkr
    1. USIban Arriola
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    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PO
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      1. PTAnswer
    2. PO
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      1. PTAnswer
    3. PO
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    1. VO
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      1. POFail adding objects to an ArrayList. Always copies the same
      1. This table or related slice is empty.
      1. VTApproveEditSuggestion
    1. COHeiko's answer below seems correct. If you add the SAME object again and again, then when you setUsername, you set it for everywhere that this object is added. That's why you need to create a NEW object for each time you insert it, as described by Heiko.
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      1. POFail adding objects to an ArrayList. Always copies the same
      1. USNiels Brinch
 

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