C．:/Program Files is a directory
请将程序补充完整。
import Java.io.*;
public class DirTest{
public static void main(String[] args){
F．ile myDir = new File( " C:/Program Files/ " );
System.out.println(myDir + ( ( 11 ) .isDirectory() ? " is " : " is not " ) + " a directory. " );
}
}