Java- Convert String Value to Integer

Question

I am getting the json data from an API as String but I want to store it in DB and use it as integer. For example I am getting A=15K or 15M but I want 15000.

Here is my class

public class JsonRestApi {
    public JsonRestApi() {
        try {
            String Response = "{\"Youtube Data\":{\"Views\":\"15K\"}}";

            JSONParser parser = new JSONParser();
            try {
                Object obj = parser.parse(Response);

                JSONObject jsonObject = (JSONObject) obj;
                JSONObject jsonObject3  = (JSONObject)jsonObject.get("Youtube Data");

                String yviews = (String)jsonObject3.get("Views");
                System.out.println(yviews);
            }
        }
     }
 }

Output- 15K

But I want output as 15000. However I do not want to change my Json data. How should I accomplish this?

s = s.replaceFirst("(?i)\\s*K$", "000").replaceFirst("(?i)\\s*M$", "000000").replaceFirst("(?i)\\s*G$", "000000000") — Joop Eggen
– Joop Eggen, Commented Sep 29, 2016 at 8:54
@Joop Suppose if I have views = 15.4K value then according to your code it would print 15.4000 but what i want is 15400 — Sarthak Srivastava
– Sarthak Srivastava, Commented Sep 29, 2016 at 9:03

uoyilmaz · Accepted Answer · 2016-09-29 09:14:19Z

5

Replace K, M etc. with the appropriate number of zeroes.

String yviews = (String)jsonObject3.get("Views");
yviews = yviews.replace( "K", "000").replace( "M", "000000");
System.out.println(yviews);

Edit: If your number of views can have floating point numbers, you can use the following code:

String[][] conversionMatrix = {{"K", "1000"}, {"M", "1000000"}, {"B", "1000000000"}};

for( int i = 0; i < conversionMatrix.length; i++)
{
    if( yviews.endsWith( conversionMatrix[i][0]))
    {
        BigDecimal temp = new BigDecimal( yviews.substring( 0, 
                                            yviews.indexOf( conversionMatrix[i][0])));
        temp = temp.multiply( new BigDecimal( conversionMatrix[i][1]));
        yviews = temp.toBigInteger().toString();
        break;
    }
}

System.out.println( yviews);

edited Sep 29, 2016 at 9:14

answered Sep 29, 2016 at 8:53

uoyilmaz

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2 Comments

Sarthak Srivastava Over a year ago

Suppose if I have views = 15.4K value then according to your code it would print 15.4000 but what i want is 15400

uoyilmaz Over a year ago

If your views can have floating point numbers, you need a different approach, see the edit.

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