CODEWITHSUNDEEP
java
user1838169
user1838169

Reputation: 534

Getting integer values from string and double it

I get a string that consists of a number and then some text, eg; "23 test", "600 tests test" the string will always start with the number but it has no set length. How do i get the number value and double it?

Upvotes: 1

Views: 475

Answers (3)

Code Enthusiastic
Code Enthusiastic

Reputation: 2847

I would do the following.

//Assumption that there is always a space after the number. Lets say String string = "23 test";

String stringArray = string.split("");

String number = stringArray[0];

System.out.print(Integer.parseInt(number)*2);

Upvotes: 0

Rahul
Rahul

Reputation: 16345

split on space, take the value on 0th index, convert it into Integer and double the value 

String s = "23 test";
Integer.parseInt(s.split(" ")[0]) * 2

Please make sure that all strings follow the same format else there will be a numberFormatException

Upvotes: 0

Deepak Singhal
Deepak Singhal

Reputation: 10874

String example = "600 test";
return Double.parseDouble ( example.substring ( 0, example.indexOf(" ")));

Upvotes: 4

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