Which is a proper JDBC URL?

• A.jdbe.mysql.com://localhost:3306/database
• B.http://localhost.mysql.com:3306/database
• C.jdbc:mysql://localhost:3306/database
• D.http://localhost mysql.jdbc:3306/database

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Given:

executed with this command:
java Main one two three
What is the result?

• A.0). one
• B.The compilation fails.
• C.A java.lang.NullPointerException is thrown.
• D.0). one1). two2). three
• E.It creates an infinite loop printing:0). one1). two1). two...

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Given:

Which statement is equivalent to line 1?

• A.double totalSalary = list.stream().map(e -> e.getSalary() * ratio).reduce (bo).ifPresent (p -> p.doubleValue());
• B.double totalSalary = list.stream().mapToDouble(e -> e.getSalary() * ratio).sum;
• C.double totalSalary = list.stream().map(Employee::getSalary * ratio).reduce (bo).orElse(0.0);
• D.double totalSalary = list.stream().mapToDouble(e -> e.getSalary() * ratio).reduce(starts, bo);

Correct Answer: C

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Given:

Which two independent changes will make the Main class compile? (Choose two.)

• A.Move the entire Student class declaration to a separate Java file, Student.java.
• B.Change line 2 to public Student(String classname).
• C.Change line 1 to public class Student {.
• D.Change line 3 to Student student = new Student("Biology");.
• E.Change line 1 to static class Student {.

Correct Answer: B,D

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Given:

and

What is the result?
Joe

• A.null
  null
• B.Mary
  Joe
• C.Marry
  null
• D.null

Correct Answer: A

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