st.split("") 取出来第一个是空格啊...char数组不好用..不能比较
追答char数组可以这样比较啊
String temp = c + "";
String数组,你就从第1个索引开始啊
String str = "1234";
String[] strs = str.split ("");
String[] result = new String[strs.length - 1];
System.arraycopy (strs, 1, result, 0, result.length);
System.out.println (Arrays.toString (result));