1z0-829 practice test

1. Question 1 · 1

   Given the code fragment: and Which is true?

   Choose one answer.

   

   

   • The program prints t1 : 1 : t2 : 1: t1 : 2 : t2 : 2 : in random order.
   • The program prints t1 : 1 : t2 : 1: t1 : 2 : t2 : 2 :
   • The program prints t1 : 1 : t2 : 1: t1 : 1 : t2 : 1 : indefinitely.
   • The program prints an exception.

2. Question 2 · 1

   Given: What is the result?

   Choose one answer.

   

   • Compilation fails.
   • there
   • hello
   • A NumberFormatException is thrown.

3. Question 3 · 1

   Given the code fragment: What is the result?

   Choose one answer.

   

   • ABBCDE // the order of elements is unpredictable
   • ABCDE
   • ABCDE // the order of elements is unpredictable
   • ADEABCB // the order of elements is unpredictable

4. Question 4 · 1

   Given: What is the result?

   Choose one answer.

   

   • {bicycle=7, car=7, motorcycle=7, truck=7}
   • {3:bicycle, 0:car, 6:motorcycle, 5:truck}
   • Compilation fails.
   • {bicycle=1, car=3, motorcycle=1, truck=2}
   • {bicycle, car, motorcycle, truck}

5. Question 5 · 1

   Which statement is true about modules?

   Choose one answer.

   • Only unnamed modules are on the module path.
   • Automatic and named modules are on the module path.
   • Only automatic modules are on the module path.
   • Only named modules are on the module path.
   • Automatic and unnamed modules are on the module path.

6. Question 6 · 1

   Given the code fragment: Which code at line n1, obtains the java.io.Console object?

   Choose one answer.

   

   • Console console = Console.getInstance();
   • Console console = System.console();
   • Console console = new Console(System.in);
   • Console console = new Console(new InputStreamReader(System.in));
   • Console console = System.console(System.in);

7. Question 7 · 1

   Given the content of the in.txt file: 0123456789 and the code fragment: What is the content of the out.txt file?

   Choose one answer.

   

   • 012345678
   • 01234567801234
   • 01234567
   • 0123456789
   • 012345678901234
   • 0123456789234567

8. Question 8 · 1

   Given the code fragment: What is the result?

   Choose one answer.

   

   • true:true:false:false
   • true:false:true:false
   • true:false:true:true
   • true:false:false:false

9. Question 9 · 1

   Given the code fragment: What is the result?

   Choose one answer.

   

   • 888
   • 8109
   • 7107
   • 777
   • 71010
   • 81111

10. Question 10 · 1

    Which statement is true?

    Choose one answer.

    • IllegalStateException is thrown if a thread in waiting state is moved back to runnable.
    • A thread in waiting state consumes CPU cycles.
    • After the timed wait expires, the waited thread moves to the terminated state.
    • A thread in waiting state must handle InterruptedException.

11. Question 11 · 1

    Given: What is the result?

    Choose one answer.

    

    • 4
    • 2
    • 6
    • Compilation fails.
    • A runtime exception is thrown.
    • Nothing is printed because of an indefinite loop.
    • 5
    • 3

12. Question 12 · 1

    Which statement is true?

    Choose one answer.

    • The lock() method returns a boolean indicator immediately regardless if it has or has not managed to acquire the lock.
    • The lock() method returns a boolean indicator immediately if it has managed to acquire the lock, otherwise it waits for the lock acquisition.
    • The tryLock() method returns a boolean indicator immediately if it has managed to acquire the lock, otherwise it waits for the lock acquisition.
    • The tryLock() method returns a boolean indicator immediately regardless if it has or has not managed to acquire the lock.

13. Question 13 · 1

    Given: Which action enables the code to compile?

    Choose one answer.

    

    • Replace 2 with static String name;
    • Replace 7 with public static void display(String design) {
    • Replace 3 with private static void display() {
    • Replace 15 with Item.display("Flower");

14. Question 14 · 1

    Given: What is the result?

    Choose one answer.

    

    • B A D
    • D A D
    • B A C
    • D D D

15. Question 15 · 1

    Given: What is the result?

    Choose one answer.

    

    • runsruns
    • flipsruns
    • runsflips
    • Compilation fails.
    • flipsflips

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