A DESCRIPTION OF THE PROBLEM :
Consider this snippet at https://docs.oracle.com/javase/tutorial/java/generics/bridgeMethods.html:

"Consider the following code:

MyNode mn = new MyNode(5);
Node n = mn; // A raw type - compiler throws an unchecked warning
n.setData("Hello"); // Causes a ClassCastException to be thrown.
Integer x = mn.data;
After type erasure, this code becomes:

MyNode mn = new MyNode(5);
Node n = (MyNode)mn; // A raw type - compiler throws an unchecked warning
n.setData("Hello"); // Causes a ClassCastException to be thrown.
Integer x = (String)mn.data;"

The type casts in "After type erasure" are incorrect:
  1. Actual: "Node n = (MyNode)mn;"
      Expected: either "Node n = (Node) mn;" (for illustration purposes) or"Node n = mn;" (preferred) because the compiler doesn't generate any cast here since none is required

  2. Actual: "Integer x = (String)mn.data;",
      Expected: "Integer x = (Integer) mn.data;" because the compiler generates a "24: checkcast #8 // class java/lang/Integer"


FREQUENCY : always