I have a java String of a list of numbers with comma separated and i want to put this into an array only the numbers. How can i achieve this?
String result=",17,18,19,";
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1possible duplicate of splitting a comma separated string and Java: How to convert comma separated String to ArrayListPaul Bellora– Paul Bellora2013-09-18 04:35:35 +00:00Commented Sep 18, 2013 at 4:35
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5 Answers
First remove leading commas:
result = result.replaceFirst("^,", "");
If you don't do the above step, then you will end up with leading empty elements of your array. Lastly split the String by commas (note, this will not result in any trailing empty elements):
String[] arr = result.split(",");
One liner:
String[] arr = result.replaceFirst("^,", "").split(",");
3 Comments
tskuzzy
@PaulVargas: No, this is Java
Mike Samuel
The calls to
replaceFirst have unnecessary '/'s in the pattern and are missing a replacement string.
koli
tskuzzy your answer is exactly correct. When i used other methods the length of the array is not properly out put. Thanks.
String[] myArray = result.split(",");
This returns an array separated by your argument value, which can be a regular expression.
Comments
Try split()
Assuming this as a fixed format,
String result=",17,18,19,";
String[] resultarray= result.substring(1,result.length()).split(",");
for (String string : resultarray) {
System.out.println(string);
}
//output : 17 18 19
That split() method returns
the array of strings computed by splitting this string around matches of the given regular expression
1 Comment
Shakeeb Ayaz
wat about first comma , ur codse w'll result into blank space for 1st index
You can do like this :
String result ="1,2,3,4";
String[] nums = result.spilt(","); // num[0]=1 , num[1] = 2 and so on..
3 Comments
Shakeeb Ayaz
wat about first comma , ur codse w'll result into blank space for 1st index
Vimal Bera
@user123 I just gave an example how to use spilt function.
Shakeeb Ayaz
question is String result=",17,18,19," not String result="17,18,19," first char is comma, for asked question split(",") will give num[1]=17 and num[0]=blank space.question is about to truncating first comma also
String result=",17,18,19,";
String[] resultArray = result.split(",");
System.out.printf("Elements in the array are: ");
for(String resultArr:resultArray)
{
System.out.println(resultArr);
}
