Given:

Which is true?

• A.The compilation fails due to an error in line 9.
• B.The compilation fails due to an error in line 6.
• C.The compilation succeeds.
• D.The compilation fails due to an error in line 2.
• E.The compilation fails due to an error in line 7.
• F.The compilation fails due to an error in line 10.
• G.The compilation fails due to an error in line 4.

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Given an application with a main module that has this module-info.java file:

Which two are true? (Choose two.)

• A.A module providing an implementation of country.CountryDetails must have a requires main; directive in its module-info.java file.
• B.To run without an error, the application must have at least one module in the module path that provides an implementation of country.CountryDetails.
• C.An implementation of country.countryDetails can be added to the main module.
• D.A module providing an implementation of country.CountryDetails can be compiled and added without recompiling the main module.
• E.To compile without an error, the application must have at least one module in the module source path that provides an implementation of country.CountryDetails.

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Given:

and

Which two method definitions at line n1 in the Bar class compile? (Choose two.)

• A.public ArrayList<Number> foo(Set<CharSequence> m) {...}
• B.public List<Integer> foo(TreeSet<String> m) {...}
• C.public List<Integer> foo(Set<CharSequence> m) {...}
• D.public List<Number> foo(Set<String> m) {...}
• E.public List<Object> foo(Set<CharSequence> m) {...}
• F.public ArrayList<Integer> foo(Set<String> m) {...}

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Given:

and

What is the result?

• A.A NullPointerException is thrown at run time.
• B.The compilation fails.
• C.1
  Null
  null
• D.1
  1
  1
• E.A ClassCastException is thrown at run time.

Correct Answer: B

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Given:

What is the type of x?

• A.String
• B.List<String>
• C.List<Character>
• D.char

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