如何从由模式分割的字符串中获取最后一个标记

Question

I am having a string

String S1="Hello@world@today@2018/01/01"
S2="Foo@Obj@new@tornado"

I want to get the last token always from each of these strings. Eg: 2018/01/01 in S1 and tornado in S2.

Please help.

Answer 1

If @ is a common delimiter you could do

String[] parts = S1.split("@");
final String lastItem = parts[parts.length - 1];

Or, perhaps an easier way of doing it depending on your preference:

final String lastItem = S1.substring(S1.lastIndexOf("@"));

Answer 2

You can use following function on String object for which you want last token

 public static String getTocken(String s) {
    String []str=s.split("@");
    return str[str.length-1];
}

Pass the input String and get the result.

Answer 3

use regex and replaceAll

.*@

S1.replaceAll(".*@", "");
S2.replaceAll(".*@", "");

output

2018/01/01
tornado