单项选择题

下面程序的功能是统计字符串中“array”的个数,在程序的空白处应填入的正确选项是 public class FindKeyWords{  public static void main(String[]args) {   String text="An array is a data structur that stores a collection of"         +"values of the same type. You access each indMdual value"         +"through an integer index. For example,if a is an array"         +"of inergers,then a[i]is the ith integer in the array.";   int arrayCount=0;   int index=-1;   String arrayStr="array";   index=text.indexOf(arrayStr);   while(index>=0) {    ++arrayCount;    index+=arrayStr.length();    index=text.indexOf(arrayStr,index);   }   System.out.println("the text contains"+arrayCount+"arrays");  } }

A.<
B.=
C.<=
D.>=
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