Please Help : (x)newInstance()

Question

I want to load class and instantiate object, but i dont i now the type of object :
my code java is :
Class cls = class.forName(org.com.xxxx);
int idx0 = str.lastIndexOf(".");
String testObj = str.substring(idx0+1);
obj = (testObj)cls.newInstance();
when i compile exception is : class testObj introuvable
Please Help Thanks

Answer 1

My code is (i dont use interface in my case.......):
HashMap ht_ = getAttribute (root, hsAll_);
Set s_ = ht_.keySet();
for (Iterator i= s_.iterator(); i.hasNext(); ) {
String str = (String)i.next();
int idx0 = str.lastIndexOf(".");
String testObj = str.substring(idx0+1);
HashMap htt_ = (HashMap)ht_.get(str);
Set ss_ = htt_.keySet();
Class cls = Class.forName(str);
o_ = (testObj)cls.newInstance();
for (Iterator ii= ss_.iterator(); ii.hasNext(); ) {
String nomAtt = ((String)ii.next());
String test = (nomAtt.substring(3));
String valAtt = (String)htt_.get(nomAtt);
//Tableau des classes des param�tres des m�thodes
Class[] args = new Class[1] ;
//R�cup�ration du type des param�tres des m�thdes de l'objet
String clsField = cls.getDeclaredField(test.toUpperCase()).getType().toString();
int idx = clsField.lastIndexOf(".");
String strField = clsField.substring(idx+1);
//Tableau des objets � passer en param�tre(chaque type doit
//�tre envelopper dans un objet qui lui correspond(double----> Double))
Object[] parms = new Object[1] ;
if(strField.equals("String") ){
parms[0] = valAtt;
args[0] = Class.forName("java.lang.String");
method = cls.getMethod(nomAtt,args);
else if(clsField.equals("double")){
parms[0] = new Double(valAtt);
method = cls.getMethod(nomAtt,new Class[] {double.class});
else if(clsField.equals("int")){
parms[0] = new Integer(valAtt);
method = cls.getMethod(nomAtt,new Class[] {int.class});
else if(clsField.equals("boolean")){
parms[0] = new Boolean(valAtt);
method = cls.getMethod(nomAtt,new Class[] {boolean.class});
else if(clsField.equals("float")){
parms[0] = new Float(valAtt);
method = cls.getMethod(nomAtt,new Class[] {float.class});
else if(clsField.equals("DateOms")){
dateoms = new DateOms(valAtt,"dd-MM-yyyy");
else continue;
//Appel de la m�thode envelopp�e dans l'objet method avec le param�tre params
method.invoke(o_,parms);
if (TraceManager.on()) {
TraceManager.log ("Le vecteur g�n�r� est de taille : " + htsObj.size());
//Stockage de l'objet instanci� dans un HashMap
htsObj.put(testObj, o_);
htsObj.put("DateOms", dateoms);
catch (Exception ex) {
TraceManager.log ("Le vecteur d'objet est null ");
ex.printStackTrace();
if (TraceManager.on()) {
TraceManager.log ("Fin de la m�thode xmlToObj()");
return htsObj;
}