Given:
11. static class A {
12. void process() throws Exception { throw new Exception(); }
13. }
14. static class B extends A {
15. void process() { System.out.println("B "); }
16. }
17. public static void main(String[] args) {
18. A a = new B();
19. a.process();
20. }
What is the result? ()
A. Compilation fails because of an error in line 19.
B. An exception is thrown at runtime.
C. B
D. Compilation fails because of an error in line 18.
E. Compilation fails because of an error in line 15.
F. The code runs with no output.
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Given:
12. System.out.format("Pi is approximately %d.", Math.PI);
What is the result?()
A. An exception is thrown at runtime.
B. Pi is approximately 3.
C. Pi is approximately 3.141593.
D. Compilation fails.
Given:
11. String test = "This is a test";
12. String[] tokens = test.split("\s");
13. System.out.println(tokens.length);
What is the result?()
A. An exception is thrown at runtime.
B. 1
C. 4
D. Compilation fails.
E. 0
Given:
11. public void genNumbers() {
12. ArrayList numbers = new ArrayList();
13. for (int i=0; i<10; i++) {
14. int value = i * ((int) Math.random());
15. Integer intObj = new Integer(value);
16. numbers.add(intObj);
17. }
18. System.out.println(numbers);
19. }
Which line of code marks the earliest point that an object referenced by intObj becomes a candidate for garbage collection?()
A. Line 19
B. The object is NOT a candidate for garbage collection.
C. Line 17
D. Line 16
E. Line 18
A JavaBeans component has the following field:
11. private boolean enabled;
Which two pairs of method declarations follow the JavaBeans standard for accessing this field?()
A.A
B.B
C.C
D.D
Given:
What is the result?()
A. An exception is thrown at runtime.
B. r, e, o,
C. Compilation fails.
D. r, t, t,
Click the Exhibit button.
Given: ClassA a = new ClassA();
a.methodA();
What is the result?()
A. The code runs with no output.
B. Compilation fails.
C. An exception is thrown at runtime.
D. ClassC is displayed.
Given:
What is the result of calling search with a valid List implementation? ()
A. 0
B. The result is undefined.
C. a
D. 2
E. 1
F. c
G. b
Given the command line java Pass2 and:
What is the result? ()
A. doStuff x = 6 main x = 6
B. Compilation fails.
C. doStuff x = 6 main x = 7
D. An exception is thrown at runtime.
E. doStuff x = 7 main x = 6
F. doStuff x = 7 main x = 7
Given:
Which five methods, inserted independently at line 5, will compile?()
A. protected int blipvert(long x) { return 0; }
B. protected long blipvert(int x) { return 0; }
C. private int blipvert(long x) { return 0; }
D. private int blipvert(int x) { return 0; }
E. public int blipvert(int x) { return 0; }
F. protected long blipvert(long x) { return 0; }
G. protected long blipvert(int x, int y) { return 0; }
Click the Exhibit button.
What is the result?()
A. The code will deadlock.
B. The code may run with output "2 0 6 4".
C. The code may run with no output.
D. The code may run with output "0 6".
E. An exception is thrown at runtime.
F. The code may run with output "0 2 4 6".
最新试题
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Given: 11. // insert code here 12. private N min, max; 13. public N getMin() { return min; } 14. public N getMax() { return max; } 15. public void add(N added) { 16. if (min == null added.doubleValue() < min.doubleValue()) 17. min = added; 18. if (max == null added.doubleValue() > max.doubleValue()) 19. max = added; 20. } 21. } Which two, inserted at line 11, will allow the code to compile?()
Click the Exhibit button. What is the output of the program shown in the exhibit? ()
Given: What is the result?()