Question: How do you trim a space in a list in Java?

How do I remove a space from a list in Java?


  1. public class removeWhiteSpace {
  2. public static void main(String[] args) {
  3. String str1=”Remove white spaces”;
  4. //Removes the white spaces using regex.
  5. str1 = str1.replaceAll(“\s+”, “”);
  6. System.out.println(“String after removing all the white spaces : ” + str1);
  7. }
  8. }

How do you remove spaces in ArrayList?

Removing spaces from an ArrayList

  1. public ArrayList removeSpace()
  2. {
  3. Iterator<String> it = array.iterator();
  4. while (it.hasNext())
  5. {
  6. if (” “))
  7. {
  8. it.remove();

How do I change a space in Java?


  1. public class ReplaceSpace.
  2. {
  3. public static void main(String[] args) {
  4. String string = “Once in a blue moon”;
  5. char ch = ‘-‘;
  6. //Replace space with specific character ch.
  7. string = string. replace(‘ ‘, ch);
  8. System. out. println(“String after replacing spaces with given character: “);

How do you add a space to a string in Java?

String padded = String. format(“%-20s”, str); In a formatter, % introduces a format sequence. The – means that the string will be left-justified (spaces will be added at the end of the string).

How do you skip a space in Java?

To remove all white spaces from String, use replaceAll() method of String class with two arguments, i.e. Article Tags : Java-Strings.

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How do I crop a String in Java?

Java String trim() Method Example 2

  1. public class StringTrimExample2 {
  2. public static void main(String[] args) {
  3. String s1 =” hello java string “;
  4. System.out.println(s1.length());
  5. System.out.println(s1); //Without trim()
  6. String tr = s1.trim();
  7. System.out.println(tr.length());
  8. System.out.println(tr); //With trim()

What is String method in Java?

All String Methods

Method Description Return Type
toString() Returns the value of a String object String
toUpperCase() Converts a string to upper case letters String
trim() Removes whitespace from both ends of a string String
valueOf() Returns the string representation of the specified value String

How do I remove all spaces from an Arraylist in Java?

Your answer

replaceAll(“\s+”,””) removes all whitespaces and non-visible characters (e.g., tab, n).

How do you remove blank spaces from an Arraylist in Java?


  1. Get the list with null values.
  2. Create a Collection with only null as element using Collections. singletonList(null)
  3. Call removeAll(Collection) on the list once.
  4. Return/Print the list (now with all null values removed).

How do you remove spaces from a string?

Different ways to remove spaces from string in java

  1. trim() : Removing leading and trailing spaces from the string.
  2. strip() : Removes spaces at the beginning and end of the string. …
  3. trim vs strip : Differences between trim and strip method.
  4. stripLeading() : Removes white spaces only from the beginning of the string.
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