查找一个String变量中有多少的###page###

public class Test {
public static void main(String[] args) {
List list = new ArrayList();
String context = "ss###page###ggggg###page###ffferfawe###page###ssa";
String[] numCut = context.split("###page###");
for (String item: numCut) {
list.add(item);
System.out.println(item);
}

}
}