下面数组中data [2][3]的值是多少?int [] [] data = { {90, 70, 87, 92}, {85, 87, 104, 107}, {98, 95, 104, 300}, {300, 95, 107, 70} };
A. 104
B. 107
C. 300
D. 70
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如果numbers是一个二维数组,以下哪一项会给出该数组row行的长度?
A. numbers.length
B. numbers.length[row]
C. numbers[row].length[row]
D. numbers[row].length
以下哪些类是来自Java API的类?
A. Scanner
B. Random
C. PrintWriter
D. 以上所有
以下哪个是Java中的关键字?
A. private
B. sightprint
C. house
D. object
If method A calls method B, and method B calls method C, and method C calls method D, when method D finishes, what happens? 如果方法A调用方法B,方法B调用方法C,方法C调用方法D,当方法D完成时,会发生什么?
A. control is returned to method A 控件返回到方法A
B. control is returned to method B 控件返回到方法B
C. control is returned to method C 控件返回到方法C
D. the program terminates 程序终止