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.
单项选择题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
单项选择题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
多项选择题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
单项选择题Given: What is the result?()
A. An exception is thrown at runtime. B. r, e, o, C. Compilation fails. D. r, t, t,
单项选择题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.