格林模拟试题二(下)(3)

  question 36)

which of the following are java key words
2)switch
4)instanceof

 

question 37)

system.out.println(math.floor(-2.1));
1) -2
3) -3

 

question 38)

given the following main method in a class called cycle and a command line of

java cycle one two
what will be output?

public static void main(string bicycle){
}
1) none of these options
3) one

 

question 39)

which of the following statements are true?

1) at the root of the collection hierarchy is a class called collection
3) the interator method returns an instance of the vector class