单项选择题
public static Iterator reverse(List list) {
Collections.reverse(list);
return list.iterator();
}
public static void main(String[] args) {
List list = new ArrayList();
list.add(” 1”); list.add(”2”); list.add(”3”);
for (Object obj: reverse(list))
System.out.print(obj + “,”);
}
What is the result?()
A. 3,2,1,
B. 1,2,3,
C. Compilation fails.
D. The code runs with no output.
E. An exception is thrown at runtime.
点击查看答案&解析
相关考题
-
单项选择题
int x= 10; do { x--; } while(x< 10); How many times will line 37 be executed?()
A. ten times
B. zero times
C. one to me times
D. more than ten times -
单项选择题
25.intx=12; 26. while (x < 10) { 27. x--; 28. } 29. System.out.print(x); What is the result?()
A. 0
B. 10
C. 12
D. Line 29 will never be reached. -
单项选择题
int x=0; int y 10; do { y--; ++x; } while (x < 5); System.out.print(x + “,“ + y); What is the result?()
A. 5,6
B. 5,5
C. 6,5
D. 6,6
