Add wildcards to each word in string array

Question

I have a Sentence

String query = "This is a sample Sentence"

I extracted all the words from it.

 String[] queryWords = query.split(" ");

... and this gives;

[ "This", "is", "a", "simple", "sentence"]

Now I want to add wildcards to each word.

[ "%This%" , "%is%" , "%a%" , "%simple%" , "%sentence%" ]

To add % symbol at the beginning and end of each word.

How can i do this?

Possible duplicate of java replace certain string in array of strings — FoldFence
– FoldFence, Commented Nov 3, 2015 at 17:41

Manos Nikolaidis · Accepted Answer · 2015-11-03 17:34:31Z

3

Iterate over all strings in queryWords and replace with a new String that is the old String with the '%' added at the beginning and the end

for (int i = 0; i < queryWords.length; ++i) {
    queryWords[i] = '%' + queryWords[i] + '%';
}

answered Nov 3, 2015 at 17:34

Manos Nikolaidis

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Comments

dejvuth · Accepted Answer · 2015-11-03 17:44:07Z

3

If you want to use Stream,

queryWords = Arrays.stream(queryWords).map(s -> "%"+s+"%").toArray(String[]::new);

answered Nov 3, 2015 at 17:44

dejvuth

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1 Comment

Shoaib Over a year ago

Thanks. will update to this code when i upgrade to java8

FoldFence · Accepted Answer · 2015-11-03 17:53:50Z

0

You can do a for loop over the array like

    for(int i = 0; i< test.length; i++){
        s[i] = "%" + s[i] + "%";
    }

http://schabby.de/java-for/

edited Nov 3, 2015 at 17:53

answered Nov 3, 2015 at 17:33

FoldFence

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4 Comments

FoldFence Over a year ago

it is look in the tags =)

Mark Sholund Over a year ago

"for each" is not Java.

Sotirios Delimanolis Over a year ago

This will only change the local s variable, not what is in queryWords.

Shoaib Over a year ago

for each can be used in java.

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