How to remove part of the string in java?

Question

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How do I split a string with any whitespace chars as delimiters?

I want to break up a string in java. I have a string "message.txt.cpabe".I want to remove the last portion and only want "message.txt". How do I do it?

Please ask some quality question. You can easily get answer from any search engine. — kundan bora, Apr 05 '12 at 07:14

Eng.Fouad · Answer 1 · 2012-04-05T07:16:07.503

6

String s = "message.txt.cpabe";
int indexOfLast = s.lastIndexOf(".");
String newString = s;
if(indexOfLast >= 0) newString = s.substring(0, indexOfLast);
System.out.println(newString); // prints "message.txt"

edited Apr 05 '12 at 07:16

answered Apr 05 '12 at 07:09

Eng.Fouad

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I would guard against lastIndexOf returning -1, which in turn will cause substring to throw an exception. – Adamski Apr 05 '12 at 07:13
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ah, spoon feeding is not a great idea. (: – Nishant Apr 05 '12 at 07:13

score 2 · Answer 2 · answered Apr 05 '12 at 07:10

2

I would use LastIndexOf(".") to get the index of that last '.', and then use substring() to cut out the part that you want.

answered Apr 05 '12 at 07:10

Oleksi

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score 1 · Answer 3 · answered Apr 05 '12 at 07:48

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String str="message.txt.cpabe";
str=str.substring(0,str.lastIndexOf("."));

Try this.

answered Apr 05 '12 at 07:48

ganesshkumar

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score -2 · Answer 4 · answered Apr 05 '12 at 07:11

-2

Probably not what you wanted but certainly what you asked for.. :-)

String original = "message.txt.cpabe";
original = "message.txt";

answered Apr 05 '12 at 07:11

jabal

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How to remove part of the string in java?

4 Answers4