public class StringDemo {

public static void main(String[] args) {

String bigString = "javajava I love java l like jajavava I enjoy javajavajava";

String smallString = "java";
int count=getCount(bigString,smallString);
System.out.println("小字符串在大字符串中出现的次数:"+count);

}
public static int getCount(String bigString,String smallString){

int count = 0;
int index;

while ((index=bigString.indexOf(smallString))!=-1) {

count++;
bigString = bigString.substring(index + smallString.length());
}
return count;
　　}

}

统计小字符串在大字符串中出现的次数