Answer to Question #15376 in Java | JSP | JSF for Royce

Question

ArrayList<Double>a;
a=new ArrayList<Float>();

What is the error in the code segment?

Answer 1

You must use only object types in generic class. Example:
a=new ArrayList<Float>() where Float - object type (float - simple type)

Likewise you must use Integer, Double, Long, Byte, String etc.