Name: krT82822 Date: 06/13/99


orig. synopsis: "Wrong Exception thrown by runtime system"
[see also bug # 4216176]

The following code produces the problem:

================================================================
class MyClass {
  MyClass() {}
  MyClass(int i) {}
}

public class MySubClass extends MyClass {
  MySubClass(int i) {}
// MySubClass() {}

// With the above line commented out, the code throws an
// InstantiationException. The API Documentation
// for InstantiationException says that it is
// " Thrown when an application tries to create an instance of
// a class using the newInstance method in class Class,
// but the specified class object cannot be instantiated
// because it is an interface or is an abstract class. "
// which is not the case. The API Documentation for
// IllegalAccessException says that
// " An instance of this class can also be thrown when an
// application tries to create an instance of a class using
// the newInstance method in class Class, but the current
// method does not have access to the appropriate
// zero-argument constructor. "
// So an IllegalAccessException is the Exception that should
// be thrown.

  public static final void main(String[] args)
      throws InstantiationException, IllegalAccessException {
    MySubClass ms = new MySubClass(1);
    MySubClass new1 = (MySubClass) ms.getClass().newInstance();
  }
}

================================================================

Error message:

Exception in thread "main" java.lang.InstantiationException: MySubClass
        at java.lang.Class.newInstance0(Native Method)
        at java.lang.Class.newInstance(Class.java:239)
        at MySubClass.main(MySubClass.java:30)

Output of "java -version":

java version "1.2"
Classic VM (build JDK-1.2-V, native threads)
(Review ID: 84274)
======================================================================