VJDK - null pointer exception

[Ruslan Zasukhin]

on 8/14/03 20:23, Rodrigo Hjort at rodrigo.hjort at actumplus.com.br wrote:

Hi Rodrigo,
Hi Jochen,

I wonder if this issue was resolved ?


> In the code below (using VJDK's latest release):
> 
> import java.awt.*;
> import java.awt.event.*;
> import com.paradigmasoft.valentina.vjdk.*;
> 
> class BaseVDB extends Frame {
> 
> public static void main(String args[])
> {
> System.out.println("Starting BaseVDB...");
> 
> try
> { 
>  VJDK.init(4 * 1024 * 1024, "", "");
>  VJDK.setDebugLevel(2);
> 
>  VDataBase db = new VDataBase();
>  db.create("MeuBanco.vdb");
> 
>  VBaseObject boCliente = db.getBaseObject("Cliente");
>  if (boCliente == null)
>  {
>   System.out.println("Creating table Cliente...");
>   boCliente = db.makeNewBaseObject("Cliente");
>   
>   /* below happens the exception */
>   VField fldCodigo = boCliente.makeNewField("Codigo", VJDK.TypeShort);
>   VField fldNome = boCliente.makeNewField("Nome", VJDK.TypeString, 40);
>   VField fldDataNasc = boCliente.makeNewField("DataNasc", VJDK.TypeDate);
>   fldCodigo.setFlags(VJDK.fIndexed);
>  }
>  else
>  {
>   System.out.println("Table Cliente already exists.");
>  }
>  db.dump("MeuBanco.xml");
> 
>  db.flush(); /*save to disk*/
>  db.close();
>  VJDK.shutdown();
> 
> }
> catch (VException vx)
> {
>  int errCode = vx.getErrorCode();
>  String errStr = vx.getErrorString();
>  System.out.println("Erro VJDK: " + errCode + " - " + errStr);
> }
> }
> 
> private VDataBase db;
> }
> 
> "Exception in thread "main" java.lang.NullPointerException
>       at myprojects.basevdb.BaseVDB.main(BaseVDB.java:94)"
> 
> It gets compiled, but when started the application the error ocurrs at that
> point. What could be wrong?! If those lines which contains .makeNewField() are
> excluded, the error ceases.
> 
> By the way, the VJDK documentation in PDF has some syntax errors. i.g.:
> VJDK.init() -> VJDK.Init()
> VDataBase.create() -> VDataBase.CreateDataBase()
> VDataBase.getBaseObject() -> VDataBase.GetBaseObject()

-- 
Best regards,
Ruslan Zasukhin      [ I feel the need...the need for speed ]
-------------------------------------------------------------
e-mail: ruslan at paradigmasoft.com
web: http://www.paradigmasoft.com

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