how to find particular word from string android

Question

i want to check if the particular word is exits or not in the string with ignore case.

My String is - "Hello world , Wassup? , good moRNING".

Now i want to check if the word - "hello world".

so i have tried the following:

String fullText = "Hello world , Wassup? , good moRNING";
String singleWord = "hello world";
boolean find;

 if (fullText.matches(singleWord)) {

    find = True;
}

I have also tried with contains but this is not working.

How can i find this particular word ?

Try google and look here: http://stackoverflow.com/questions/5091057/how-to-find-a-whole-word-in-a-string-in-java — Flummox - don't be evil SE, Dec 28 '16 at 10:03
Apart from the difference between lowercase and uppercase `h` (as @AdityaVyas-Lakhan pointed out), `contains()` should work. `matches()` is not suited since it (a) requires a regular expression and (b) only returns true if the entire string matches the regex, that is, doesn’t contain more characters before or after. — Ole V.V., Dec 28 '16 at 10:11
It’s an aside: `true` should be with a small `t` (can’t believe how many of the answers copied this error). — Ole V.V., Dec 28 '16 at 10:13

hzitoun · Answer 1 · 2017-06-19T14:15:49.063

3

find = fullText.toUpperCase().contains(singleWord.toUpperCase());

edited Jun 19 '17 at 14:15

answered Dec 28 '16 at 10:04

hzitoun

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Worked well for me, thanks – King Of The Jungle Sep 27 '20 at 21:02

Shubham Khatri · Accepted Answer · 2016-12-28T10:16:37.477

3

You can convert both string to common case and then make use of indexOf or otherwise with matched you need to make use of a regex.

String fullText = "Hello world , Wassup? , good moRNING";
String singleWord = "hello world";
boolean find;



if (fullText.toLowerCase().indexOf(singleWord.toLowerCase()) > -1) {

    find = true;
}

edited Dec 28 '16 at 10:16

answered Dec 28 '16 at 10:06

Shubham Khatri

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Should work (aprat from the capital `T` in `True`). If using Java 5 or newer, `contains()` is simpler. – Ole V.V. Dec 28 '16 at 10:14
@OleV.V. thanks for pointing it out. I edited the code. – Shubham Khatri Dec 28 '16 at 10:19

score 1 · Answer 3 · answered Dec 28 '16 at 10:03

1

You can try lower casing both the sentence to be searched and the string, e.g.

if (fullText.toLowerCase().matches(singleWord.toLowerCase())) {
    find = True;
}

answered Dec 28 '16 at 10:03

Tim Biegeleisen

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score 1 · Answer 4 · answered Dec 28 '16 at 10:05

you can try this :

String string = "Test, I am Adam";
// Anywhere in string
b = string.indexOf("I am") > 0;         // true if contains 

// Anywhere in string
b = string.matches("(?i).*i am.*");     // true if contains but ignore case

// Anywhere in string
b = string.contains("AA")  ;

score 0 · Answer 5 · answered Dec 28 '16 at 10:04

0

The problem is the case:

Hello world doesn't contains hello world because it has the capital letter.

Use this:

if (fullText.toLowerCase().matches(singleWord.toLowerCase())) {
  find = True;
}

answered Dec 28 '16 at 10:04

Pier Giorgio Misley

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how to find particular word from string android

5 Answers5