CODEWITHSUNDEEP
javaregexstring
NeptuneGamer
NeptuneGamer

Reputation: 123

Removing trailing and leading spaces

I am trying to filter out commas and spaces from file input. I am returning a line of input(example below and passing that line to a method which is filtering out the commas and leading and trailing spaces) 

John Paul Claurigh, Craig Megan, Bob a’ Chores

should filter to three separate strings in the an array.

John Paul Claurigh
Craig Megan
Bob a’ Chores

My problem is not getting rid of the commas but eliminating the leading and trailing spaces.

public void listConverter(String list){
String[] array=listConverter.split(",");
for(int i=0; i<array.length; i++){
    addSubject(array[i]);
}

Can I use the split method to get rid of the leading and trailing spaces ?

Upvotes: 2

Views: 1432

Answers (5)

med116
med116

Reputation: 1606

A java 8 rendition

    String fileInput = "John Paul Claurigh,   Craig Megan    ,    Bob a’ Chores   ";

    List<String> namesList = Pattern.compile(",\\s")
            .splitAsStream(fileInput)
            .map(name -> name.trim())
            .collect(Collectors.toList());


    namesList.forEach(name -> System.out.println("NAME: " + name));

OUTPUT

NAME: John Paul Claurigh
NAME: Craig Megan
NAME: Bob a’ Chores

Upvotes: 0

Abhash Upadhyaya
Abhash Upadhyaya

Reputation: 727

You can try this:

public void listConverter(String list){
String[] array=listConverter.split("\\s*,\\s*");
for(int i=0; i<array.length; i++){
    addSubject(array[i]);
}

It will split on comma with or without any leading/trailing whitespaces.

Upvotes: 0

Pedro Lobito
Pedro Lobito

Reputation: 98881

Your code seems correct, just use trim() to remove the leading/ending spaces

public void listConverter(String list){
String[] array=listConverter.split(",");
for(int i=0; i<array.length; i++){
    addSubject(array[i].trim());
}

Upvotes: 1

SMA
SMA

Reputation: 37023

Try something like:

String[] array = s.split("\\s*,\\s*");

Which means split by any number (0..n) spaces before or after comma (,).

Output:

<John Paul Claurigh>
<Craig Megan>
<Bob a’ Chores>

Upvotes: 2

Uma Kanth
Uma Kanth

Reputation: 5629

A simple split with a space after comma is more than enough

String s = "John Paul Claurigh, Craig Megan, Bob a’ Chores";
String[]tokens = s.split(", ");//note the space after comma.
System.out.println(Arrays.toString(tokens));

Upvotes: 0

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