parameterized constructors can be invoked just by inserting parameteers into the object create statement i.e for example

class Test{

Test(int a)

{

system.out.println( the value of a is + a);

}

}

this can be called by calling

Test t1 new Test(a);

Here is the snap shot of the working solution to the said question..

try{

System.out.println( class name is +class_name);

Class cls Class.forName(class_name);

Constructor[] ctorlist cls.getConstructors();

/*

*temporary remove the sysout statement

*

*

*/

/*

* to go to the list box

*

*/

for(int i 0;i<ctorlist.length;i++)

System.out.println(ctorlist[i]+ i +i);

partypes ctorlist[inx].getParameterTypes();

Constructor ctor cls.getConstructor(partypes);

argcnt partypes.length;

System.out.println( argcnt +argcnt);

arglist new Object[argcnt];

/*

*call to verify the argument

*/

boolean temp comparevalidate();

if(objectlist.size()>0)

System.out.println( object list is :: + objectlist.toString());

for(int i 0;i<arglist.length;i++)

System.out.println( arglist +arglist[i].toString());

if(temp true){

System.out.println( created new object );

Object retobj ctor.newInstance(arglist);

objectlist.add(retobj);

if(objectlist.size()>0)

System.out.println( object list is new:: + objectlist.toString());

/*else

if((argcnt 0) && (paramValues.size() 0))

{

Object retobjnew cls.newInstance();

objectlist.add(retobjnew);

System.out.println( inside default constructor );

}*/

}catch(Exception ex){ex.printStackTrace();}