How to Remove White space after splitting String?

Question

Hi i am splitting String with delimiter "," . The result containing white space. How can i remove this white space? why this white space is coming?

public class StringUtilsPractice  {
public static void main(String[] args) {
    String myString= "123,456";
    String[] splitedString= myString.split(",");
    List<String> splitedList= Arrays.asList(splitedString);
    List<String> filterValue=new ArrayList<String>();
    filterValue.add("123,456");
    boolean flag=filterValue.contains(splitedList);
    System.out.println("splitedList:"+splitedList);
    System.out.println("filterValue:"+filterValue);
    System.out.println("Flag::"+flag);
}

}

Result: splitedList:[123, 456] filterValue:[123,456] Flag::false

I am splitting by default one white space is adding. how can remove that white space. And result should return "true".

Answer 1

Look at line 442 of AbstractCollection . What you're looking at is the native toString() output of List (ie, the string representation of List ), which adds a comma for readability.

You can also see this in the JavaDoc for AbstractCollection :

Returns a string representation of this collection. The string representation consists of a list of the collection's elements in the order they are returned by its iterator, enclosed in square brackets ("[]"). Adjacent elements are separated by the characters ", " (comma and space) . Elements are converted to strings as by String.valueOf(Object) . (emphasis mine)

If you iterated over the values yourself and printed them out, you will notice that there are no spaces.