class A {
}

class B  {
     B() {
     }

     B(A a) {
     }
}

ArrayList<B> bList = new ArrayList<B>();
for (A a: aList)
	bList.add(new B(a));

	
public static <T> List<Object> convertList(List<T> list, Class clazz) {
		ArrayList<Object> newList = new ArrayList<Object>();
		for (T t : list) {
			clazz.getConstructor(T) ; //здесь ругается
		
		}
	}

import java.lang.reflect.InvocationTargetException;
import java.util.ArrayList;
import java.util.List;

class A {
	String s;

	A(String s) {
		this.s = s;
	}

};

class B {
	String s;

	public B(String s) {
		this.s = s;
	}

	public B(A a) {
		this.s = a.s+"=====";
	}
}

public class Test {

	public static <T,E> ArrayList<E> convertList(List<T> list, Class<E> clazz)
			throws NoSuchMethodException, SecurityException,
			InstantiationException, IllegalAccessException,
			IllegalArgumentException, InvocationTargetException {
		ArrayList<E> newList = new ArrayList<E>();
		for (T t : list) {
			newList.add(clazz.getConstructor(t.getClass()).newInstance(t));
		}
		return newList;
	}

	public static void main(String[] args) throws NoSuchMethodException, SecurityException, InstantiationException, IllegalAccessException, IllegalArgumentException, InvocationTargetException {
			ArrayList<A> as = new ArrayList<A>();
			as.add(new A("sfsfsdfsdf"));
			ArrayList<B> bs  = (ArrayList<B>)convertList(as, B.class);
			for (B b : bs)
				System.out.println(b.s);
			
	}

}