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--- cs257e17:proj2 [2017/03/03 17:39]
scarl
+++ cs257e17:proj2 [2021/03/09 14:58] (current)
scarl
@@ Line 1: / Line 1: @@
-It appears Java 8 has tightened up rules on casting. To fix some of the problems:
+It appears newer versions of Java tightened up rules on casting. To fix some issues I've seen:
-Prefer calling **superclass** methods to accessing the protected instance variables. For example:
+In ''dump'', trying to output members of the ''elements'' array can cause casting errors at runtime. A simple workaround is
+<code java>
+Object[] elementsCopy = elements;
+for (int i = 0; i <= topIndex; i++) {
+   System.out.println((Short) elementsCopy[i]);
+}
+</code>
+When using inheritance, prefer calling **superclass** methods to accessing protected instance variables. For example:
 <code java>
    short x, y, z;
@@ Line 10: / Line 19: @@
    z = (short) (x + y); // cast because type of the result is int
 </code>
-In dump, trying to output members of the ''elements'' array can cause casting errors at runtime. A simple workaround is
-<code java>
-Object[] elementsCopy = elements;
-for (int i = 0; i <= topIndex; i++) {
-   System.out.println((Short) elementsCopy[i]);
-}
-</code>

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