How to get last few characters of varying length from a string ..?

Question

I have a multiple string urls, from which i have to pick last few characters, which are id's infact. But the problem is that, the length of id's is not consistent, i.e., if one id is of length 6 then, other may be of length 5 or 4 and so on. The sample urls are like:

www.abc.com/xyz-123456
www.abc.com/pqr-5432
www.abc.com/lmn/opqr-25647

it could have been a lot easier if the length of the particular id portion would have been same, i could have used:

String abc = "www.abc.com/xyz-123456"; 
String id = abc.substring(abc.length()-6);

But now the scenario is different as length of id portion in the selected url is not the same always, How can i cater this varying id..???? please any help is appreciated.

pimaster · Accepted Answer · 2011-10-18 05:17:32Z

5

There is a lastIndexOf method on the String object that will let you find the position of the '-' (I take it that is your separator). From there you can do the substring.

answered Oct 18, 2011 at 5:17

pimaster

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2 Comments

Usama Sarwar Over a year ago

@Pimastar, Thanks man, u have pulled me out of hell indeed...:P

Usama Sarwar Over a year ago

Yes! Sure, i was trying but i am getting a message that i can accept answer in few minutes. So as the time passes, i'll accept that...:-)

KV Prajapati · Accepted Answer · 2011-10-18 05:27:10Z

2

You can use something like this.

String id=abc.subString(abc.lastIndexOf('\'),abc.length()-1);

Hope it will help you. :)

edited Oct 18, 2011 at 5:27

KV Prajapati

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answered Oct 18, 2011 at 5:20

Android Killer

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Comments

Paul Trone · Accepted Answer · 2011-10-18 05:27:44Z

1

String url1 = "www.abc.com/xyz-123456";
String[] url1Split = url1.split("-");

What you're looking for can be found in url1split[1]

edited Oct 18, 2011 at 5:27

answered Oct 18, 2011 at 5:26

Paul Trone

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Comments

Prince John Wesley · Accepted Answer · 2011-10-18 05:17:22Z

0

Use regex to remove all characters upto -.

String id = url.replaceAll("^.*-","");

or

String id = url.replaceAll("^.*-(\\w+)$","$1");

answered Oct 18, 2011 at 5:17

Prince John Wesley

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Rajnikant · Accepted Answer · 2011-10-18 05:20:03Z

0

You can use LastIndexOf or create the regular expression.

answered Oct 18, 2011 at 5:20

Rajnikant

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