相关考题

单项选择题 10. public class ClassA {  11. public void methodA() {  12. ClassB classB = new ClassB();  13. classB.getValue();  14. }  15. }  And:  20. class ClassB {  21. public ClassC classC;  22.  23. public String getValue() {  24. return classC.getValue();  25. }  26. }  And:  30. class ClassC {  31. public String value;  32.  33. public String getValue() {  34. value = “ClassB”;  35. return value;  36. }  37. }  Given:  ClassA a = new ClassA();  a.methodA();  What is the result?()

单项选择题 11. public void someMethod(Object value) {  12. // check for null value ....  20. System.out.println(value.getClass());  21. }  What, inserted at line 12, is the appropriate way to handle a null value?()

单项选择题 static void test() throws RuntimeException {  try {  System.out.print(”test “);  throw new RuntimeException();  }  catch (Exception ex) { System.out.print(”exception “); }  }  public static void main(String[] args) {  try { test(); }  catch (RuntimeException ex) { System.out.print(”runtime “); }  System.out.print(”end “);  }  What is the result?()