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單項選擇題

1.public class Test { 
2.public static void main (String args[]) { 
3.class Foo { 
4.public int i = 3; 
5.} 
6.Object o = (Object) new Foo(); 
7.Foo foo = (Foo)o; 
8.System.out.printIn(foo. i);
9. } 
10.}  
What is the result?()  

A. Compilation will fail.
B. Compilation will succeed and the program will print “3”
C. Compilation will succeed but the program will throw a ClassCastException at line 6.
D. Compilation will succeed but the program will throw a ClassCastException at line 7.

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