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1Z0-819 · Question #189

1Z0-819 Question #189: Real Exam Question with Answer & Explanation

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Question

public class X {
 protected void print(Object obj) {
 print(objects);
 }
 public final void print(Object... objects) {
 collection.forEach(System.out::println);
 }
}

public class Y extends X {
 public void print(Object obj) {
 System.out.println("obj " + obj);
 }
 public void print(Object... objects) {
 for (Object object : objects) {
 System.out.println("[" + object + "]");
 }
 }
 public void print(Collection collection) {
 print(collection.toArray());
 }
}
Why does this compilation fail?

Options

  • AThe method X.print(Object) does not call the method super.print(Object)
  • BThe method X.print(Object...) is not accessible to Y
  • CThe method Y.print (collection), however. Out of scope, is an invalid Java identifier.
  • DThe method print (Object) and the method print (Object...) are duplicates of each other. The method X.print (Object...) cannot override the final method X.print (Object...)

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