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Editorial Team
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Asked: 2026-06-07T15:57:22+00:00

I would like to know if Java supports casting and melting of data somehow.

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I would like to know if Java supports “casting and melting” of data somehow. By “casting and melting” I mean “reshaping” data in the way that the R package reshape ( or reshape2) does.

So I have a SQL query that returns the following ( in a ResultSet ) :

---------------------
|Id | Key    | Value|
---------------------
|1  | Name   | John |
|1  | Gender | Male | 
|1  | Country| U.S  |
|2  | Name   | Tom  |
|2  | Gender | Male |
|2  | Country| Cuba |
---------------------

I want to reshape this data so that I can get this : 

------------------------
|Id|Name|Gender|Country|
------------------------
|1 |John|Male  |U.S    |
|2 |Tom |Male  |Cuba   |
------------------------

How do Java programmers achieve this transformation ?

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1 Answer

  1. Editorial Team

    Not directly. R is more focused on data while Java is more of a general purpose language and lacks some of the various specific functions. You can either program something yourself; or use a “ETL” (Extract, Transform, Load) tool such as Kettle http://kettle.pentaho.com/

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