Given the structure of the Student table: Student (id INTEGER, name VARCHAR) Given the records from the STUDENT table: Given the code fragment: Assume that: The required database driver is configured in the classpath. The appropriate database is accessible with the dbURL, userName, and passWord exists. What is the result?
A. The program prints Status: true and two records are deleted from the Student table.
B. The program prints Status: false and two records are deleted from the Student table.
C. A SQLException is thrown at runtime.
D. The program prints Status: false but the records from the Student table are not deleted.
Answer:
B
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Question 2
Given the code fragment: Which should be inserted into line n1 to print Average = 2.5?
A. IntStream str = Stream.of (1, 2, 3, 4);
B. IntStream str = IntStream.of (1, 2, 3, 4);
C. DoubleStream str = Stream.of (1.0, 2.0, 3.0, 4.0);
D. Stream str = Stream.of (1, 2, 3, 4);
Answer:
C
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Question 3
Which two statements are true about synchronization and locks? (Choose two.)
A. A thread automatically acquires the intrinsic lock on a synchronized statement when executed.
B. The intrinsic lock will be retained by a thread if return from a synchronized method is caused by an uncaught exception.
C. A thread exclusively owns the intrinsic lock of an object between the time it acquires the lock and the time it releases it.
D. A thread automatically acquires the intrinsic lock on a synchronized methods object when entering that method.
E. Threads cannot acquire intrinsic locks on classes.
Answer:
A,B
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Question 4
Which two statements are true about the Fork/Join Framework? (Choose two.)
A. The RecursiveTask subclass is used when a task does not need to return a result.
B. The Fork/Join framework can help you take advantage of multicore hardware.
C. The Fork/Join framework implements a work-stealing algorithm.
D. The Fork/Join solution when run on multicore hardware always performs faster than standard sequential solution.
Answer:
A,C
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Question 5
Given the code fragment: Which code fragment, when inserted at line 7, enables printing 100?
A. Function<Integer> funRef = e –> e + 10;Integer result = funRef.apply(value);
B. IntFunction funRef = e –> e + 10;Integer result = funRef.apply (10);
C. ToIntFunction<Integer> funRef = e –> e + 10;int result = funRef.applyAsInt (value);
D. ToIntFunction funRef = e –> e + 10;int result = funRef.apply (value);
Answer:
A
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Question 6
Given the records from the STUDENT table: Given the code fragment: Assume that the URL, username, and password are valid. What is the result?
A. The STUDENT table is not updated and the program prints:114 : John : [email protected]
Given the Greetings.properties file, containing: and given: What is the result?
A. Compilation fails.
B. GOODBY_MSG
C. Hello, everyone!
D. Goodbye everyone!
E. HELLO_MSG
Answer:
A
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Question 9
Given the code fragment: Assume that dbURL, userName, and password are valid. Which code fragment can be inserted at line n1 to enable the code to print Connection Established?
A. Properties prop = new Properties();prop.put (user, userName);prop.put (password, password);con = DriverManager.getConnection (dbURL, prop);
B. con = DriverManager.getConnection (userName, password, dbURL);
C. Properties prop = new Properties();prop.put (userid, userName);prop.put (password, password);prop.put(url, dbURL);con = DriverManager.getConnection (prop); D. con = DriverManager.getConnection (dbURL);con.setClientInfo (user, userName);con.setClientInfo (password, password);
Answer:
A
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Question 10
Given: and the code fragment: What is the result?
A. 0.0
B. 1500.0
C. A compilation error occurs.
D. 2000.0
Answer:
B
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Question 11
Given the code fragments: and Which two modifications enable to sort the elements of the emps list? (Choose two.)
A. Replace line n1 withclass Person extends Comparator<Person>
B. At line n2 insertpublic int compareTo (Person p) {return this.name.compareTo (p.name);}
C. Replace line n1 withclass Person implements Comparable<Person>
D. At line n2 insertpublic int compare (Person p1, Person p2) {return p1.name.compareTo (p2.name);}
E. At line n2 insert:public int compareTo (Person p, Person p2) {return p1.name.compareTo (p2.name);}
F. Replace line n1 withclass Person implements Comparator<Person>
Answer:
B,C
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Question 12
Given the code fragment: Which two code fragments, when inserted at line n1 independently, result in the output PEEK: Unix?
A. .anyMatch ();
B. .allMatch ();
C. .findAny ();
D. .noneMatch ();
E. .findFirst ();
Answer:
C,E
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Question 13
Given: and the code fragment: Which definition of the ColorSorter class sorts the blocks list?