问题:单选题Given the command line java Pass2 and: What is the result? ()AdoStuff x = 6 main x = 6BCompilation fails.CdoStuff x = 6 main x = 7DAn exception is thrown at runtime.EdoStuff x = 7 main x = 6FdoStuff x = 7 main x = 7
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问题:单选题Click the Exhibit button. Given: ClassA a = new ClassA(); a.methodA(); What is the result?()AThe code runs with no output.BCompilation fails.CAn exception is thrown at runtime.DClassC is displayed.
问题:单选题Given: What is the result?()AAn exception is thrown at runtime.Bint LongCCompilation fails.DShort Long
问题:多选题Given: 12. NumberFormat nf = NumberFormat.getInstance(); 13. nf.setMaximumFractionDigits(4); 14. nf.setMinimumFractionDigits(2); 15. String a = nf.format(3.1415926); 16. String b = nf.format(2); Which two statements are true about the result if the default locale is Locale.US?()AThe value of b is 2.00.BThe value of a is 3.141.CThe value of a is 3.14.DThe value of b is 2.0000.EThe value of a is 3.1415.FThe value of a is 3.1416.GThe value of b is 2.
问题:单选题Given: What is the result of calling search with a valid List implementation? ()A0BThe result is undefined.CaD2E1FcGb
问题:单选题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?()ALine 19BThe object is NOT a candidate for garbage collection.CLine 17DLine 16ELine 18
问题:多选题Which two code fragments correctly create and initialize a static array of int elements?()AABBCCDD
问题:多选题Given: Which five methods, inserted independently at line 5, will compile?()Aprotected int blipvert(long x) { return 0; }Bprotected long blipvert(int x) { return 0; }Cprivate int blipvert(long x) { return 0; }Dprivate int blipvert(int x) { return 0; }Epublic int blipvert(int x) { return 0; }Fprotected long blipvert(long x) { return 0; }Gprotected long blipvert(int x, int y) { return 0; }
问题:单选题Given: 12. System.out.format("Pi is approximately %d.", Math.PI); What is the result?()AAn exception is thrown at runtime.BPi is approximately 3.CPi is approximately 3.141593.DCompilation fails.
问题:多选题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?()AABBCCDD
问题:单选题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? ()ACompilation fails because of an error in line 19.BAn exception is thrown at runtime.CBDCompilation fails because of an error in line 18.ECompilation fails because of an error in line 15. FThe code runs with no output.
问题:多选题Given: 10. interface Jumper { public void jump(); } ... 20. class Animal {} ... 30. class Dog extends Animal { 31. Tail tail; 32. } ... 40. class Beagle extends Dog implements Jumper{ 41. public void jump() {} 42. } ... 50. class Cat implements Jumper{ 51. public void jump() {} 52. }. Which three are true?()ACat is-a JumperBCat is-a AnimalCDog is-a JumperDDog is-a AnimalEBeagle has-a JumperFCat has-a AnimalGBeagle has-a Tail
问题:单选题Given: What is the result?()AAn exception is thrown at runtime.Br, e, o,CCompilation fails.Dr, t, t,
问题:单选题Given: 11. public static void main(String[] args) { 12. Object obj = new int[] { 1, 2, 3 }; 13. int[] someArray = (int[])obj; 14. for (int i : someArray) System.out.print(i + " "); 15. } What is the result? ()ACompilation fails because of an error in line 13.BA ClassCastException is thrown at runtime.C1 2 3DCompilation fails because of an error in line 14.ECompilation fails because of an error in line 12.