Java-J2SE学习笔记-查找一个String中，subString的出现次数

package Test;

public class TestStringContain {

public static void main(String[] args) {
String str = "javakkjava--java99javahajava98098098098java";
String subStr = "java";

int count = 0;
int fromIndex = 0;
int index = -1;

while((index = str.indexOf(subStr,fromIndex)) != -1){
//每次找到subStr，都把fromIndex下移subStr.length()个长度
fromIndex = index + subStr.length();
count++;
}

System.out.println(count);
}
}