单项选择题
A. No code is necessary.
B. throws Exception
C. catch ( Exception e )
D. throws RuntimeException
E. catch ( TestException e)
单项选择题 12. void start() { 13. A a = new A(); 14. B b = new B(); 15. a.s(b); 16. b = null; 17. a = null; 18. System.out.println(“start completed”); 19. } When is the B object, created in line 14, eligible for garbage collection?()
单项选择题 for (int i =0; i < 4; i +=2) { System.out.print(i + “”); } System.out.println(i); What is the result?()
单项选择题 float f[][][] = new float[3][][]; float f0 = 1.0f; float[][] farray = new float[1][1]; What is valid?()