Given the code fragment:

You have been asked to define the ProductCode class. The definition of the ProductCode class must allow c1
instantiation to succeed and cause a compilation error on c2 instantiation.
Which definition of ProductCode meets the requirement?

• A.Option A
• B.Option D
• C.Option B
• D.Option C

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Given:
public class Foo<K, V> {
private K key;
private V value;
public Foo (K key, V value) (this.key = key; this value = value;)
public static <T> Foo<T, T> twice (T value) (return new Foo<T, T>
(value, value); )
public K getKey () (return key;)
public V getValue () (return value;)
}
Which option fails?

• A.Foo<?, ?> percentage = new Foo <> (97, 32);
• B.Foo<String, Integer> mark = new Foo<String, Integer> ("Steve", 100);
• C.Foo<String, String> grade = new Foo <> ("John", "A");
• D.Foo<String, String> pair = Foo.<String>twice ("Hello World!");

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Given the code fragment:

What is the result?

• A.Compilation fails.
• B.An UnsupportedOperationException is thrown at runtime.
• C.Hi removed
• D.The program compiles, but it prints nothing.

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Given the code fragment:

What is the result?

• A.4
• B.-1
• C.Compilation fails.
• D.3

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Which two code blocks correctly initialize a Locale variable?

• A.Locale loc5 = new Locale ("ru", "RU");
• B.Locale loc4 = Locale.UK;
• C.Locale loc1 = "UK";
• D.Locale loc2 = Locale.getInstance("ru");
• E.Locale loc3 = Locale.getLocaleFactory("RU");

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