Question: What is the output of the following program?
1 class Tool<T> {
2 public String name;
3 }
4 public class ToolBox<U> {
5 public static <T> Tool<T> solve(T t) {
6 Tool<T> u = new Tool<T>();
7 u.name = "drill";
8 return u;
9 }
10 public static <T> T desc(T t) {
11 return t;
12 }
13 public static <T> void idle(T t){}
14
15 public static void main(String...args) {
16 System.out.print(ToolBox.desc("hammer"));
17 System.out.print(ToolBox.solve("hammer").name);
18 System.out.print(ToolBox.<Integer>solve(10).name);
19 ToolBox.<String>idle("xxx");
20 }
21 }
Choice:
A. compiler error at line 1
B. compiler error at line 4
C. compiler error at line 6
D. compiler error at line 10
E. compiler error at other lines
F. hammerhammer10
G. hammerdrill10
H. hammerdrilldrill
