CODEWITHSUNDEEP
java
Jack
Jack

Reputation: 161

Extract only number from a string

Supposedly I have a string that contains: hello 14:12.

Now I want to extract only the number and have two separate value in two variable like this: first_num value should be int i.e. first_num = 14 and the second variable should store the number after the colon (:) i.e. second_num = 12.

Upvotes: 1

Views: 8539

Answers (2)

Ved Agarwal
Ved Agarwal

Reputation: 565

You can use Regex to solve the problem

public static List<Integer> extractNumbers(String s){       
        List<Integer> numbers = new ArrayList<Integer>();

        Pattern p = Pattern.compile("\\d+");
        Matcher m = p.matcher(s);

        while(m.find()){
            numbers.add(Integer.parseInt(m.group()));
        }       
        return numbers;     
    }

Upvotes: 2

Iqbal S
Iqbal S

Reputation: 1154

ReplaceAll is the best solution

String str = "hello 14:12";
str = str.replaceAll("[^0-9]+", " ");
System.out.println(Arrays.asList(str.trim().split(" ")));

In this way you can attain only numbers in the array.

Upvotes: 2

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