编辑代码

class Main {
	public static void main(String[] args) { 
       	System.out.println( cutStr("一共12.0元","一共","元"));
	}

    public static String cutStr (String str, String start, String end) { 
        str = str.substring(str.indexOf(start)+start.length());
        str = str.substring(0, str.indexOf(end));
        return str;
    }
}