How to use Constructor.newInstance(Object [] o)

this is my code:
Constructor[] theConstructors = c.getConstructors();
for(int ii=0;ii<theConstructors.length;ii++)
Object oArg[] = new Object[2];
Integer integerX = new Integer(x);
Integer integerY = new Integer(y);
oArg[0] = integerX;
oArg[1] = integerY;
Class [] cAry =theConstructors[ii].getParameterTypes();
o = theConstructors[ii].newInstance(oArg);
}catch (InstantiationException aa){}
catch (IllegalAccessException bb){}
catch (IllegalArgumentException cc){}
catch (InvocationTargetException dd){}
and the class called UseCase(Object[] o)
but the object can't null ......why?

but the object can't null ......why?Because the constructor wants one parameter of the type Object[], but you give it two parameters of the types Integer.
Change the following three lines accordingly:
Object[][] oArg = new Object[1][2];
oArg[0][0] = integerX;
oArg[0][1] = integerY;- Marcus

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