Oracle认证考试1Z0-853单项选择题每日一练(2019.01.22)

单项选择题
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".
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.
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
Given：What is the result？（）
A. An exception is thrown at runtime.
B. int Long
C. Compilation fails.
D. Short Long
单项选择题
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？（）
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.