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Exam Code: 1Z0-053

Exam Name: Oracle Database 11g: Administration II

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1Z0-053 Questions and answers Total Q&A: 698 Questions and Answers

Last Update: 2016-11-04

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Exam Code: 1z0-809

Exam Name: Java SE 8 Programmer II

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1z0-809 Latest Dumps Total Q&A: 128 Questions and Answers

Last Update: 2016-11-04

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NO.1 Given the code fragment:
class CallerThread implements Callable<String> {
String str;
public CallerThread(String s) {this.str=s;}
public String call() throws Exception {
return str.concat("Call");
}
}
and
public static void main (String[] args) throws InterruptedException, ExecutionException
{
ExecutorService es = Executors.newFixedThreadPool(4); //line n1
Future f1 = es.submit (newCallerThread("Call"));
String str = f1.get().toString();
System.out.println(str);
}
Which statement is true?
A. An ExecutionException is thrown at run time.
B. A compilation error occurs at line n1.
C. The program prints Call Call and does not terminate.
D. The program prints Call Call and terminates.
Answer: C

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NO.2 Which three statements are benefits of encapsulation?
A. Protects confidential data from leaking out of the objects
B. Permits classes to be combined into the same package
C. Prevents code from causing exceptions
D. Enables the class implementation to protect its invariants
E. Allows a class implementation to change without changing t he clients
F. Enables multiple instances of the same class to be created safely
Answer: A,D,E