java循环匹配递归的问题

private static void digui(String displayName, ArrayList<ArrayList<String>> object, int flag) { 

       // TODO Auto-generated method stub 

        Log.d("hehe", "每次进来flag="+flag); 

        if (flag > object.size()) { 

            return; 

        } 
        //displayName博达波打安 //bda //object{博，波}{打，达}{安} 

        ArrayList<String> value = object.get(flag); 

        for (int i = 0; i < value.size(); i++) {// 博 波 

            Log.d("hehe", "flag =====" + flag); 

            Log.d("hehe", "value =====" + value); 

            displayName = flag == 0 ? mDisplayName : displayName; 

            Log.d("hehe", "displayName=" + displayName+";mDisplayName="+mDisplayName); 

            int pos = displayName.indexOf(value.get(i)); 

            Log.d("hehe", "值=" + value.get(i) + ",pos=" + pos); 

            if ((flag == 0) || (flag > 0 && pos == 0)) { 

                if (flag == object.size() - 1) { 

                    Log.d("hehe", "return!!!!!!!!!!!!!!!!!!!!!!!" + flag); 

                    return; 
                } 

                flag = flag + 1; 

                String subStr = displayName.substring(pos + value.get(i).length()); 

                Log.d("hehe", "剩余subStr=" + subStr + ",flag=" + flag); 

                digui(subStr, object, flag);// 达 打 、、安 

            } 

        } 

        //Log.d("hehe", "js*********************"+flag); 

    }