about java: get `String[].class` from `String.class`, what if `String.class` is a “runtime type”? [duplicate]

Answer 1

HRgiger's answer improved:

@SuppressWarnings("unchecked")
static  Class getArrayClass(Class clazz) {
    return (Class) Array.newInstance(clazz, 0).getClass();
}

Both of them instantiate an array object when invoked. To get the array type, use

Class childType = ...;
Class arrayType = getArrayClass(childType);