Question: How To Remove Spaces From A String In Java?

How do you remove special characters and spaces from a string in Java?

Example of removing special characters using replaceAll() method

  1. public class RemoveSpecialCharacterExample1.
  2. {
  3. public static void main( String args[])
  4. {
  5. String str= “This# string %contains^ special *characters&.”;
  6. str = str.replaceAll(“[^a-zA-Z0-9]”, ” “);
  7. System.out.println(str);
  8. }

How can I remove the trailing spaces from a string?

String result = str. trim(); The trim() method will remove both leading and trailing whitespace from a string and return the result.

Which of the following method can be used to delete the spaces from a string?

trim () is the most common method used for removing spaces in string.

How do I remove a specific character from a string in Java?

How to remove a particular character from a string?

  1. public class RemoveChar {
  2. public static void main( String [] args) {
  3. String str = “India is my country”;
  4. System.out.println(charRemoveAt(str, 7));
  5. }
  6. public static String charRemoveAt( String str, int p) {
  7. return str.substring(0, p) + str.substring(p + 1);
  8. }
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Is blank space a special character in Java?

A character is a Java whitespace character if and only if it satisfies one of the following criteria: It is a Unicode space character (SPACE_SEPARATOR, LINE_SEPARATOR, or PARAGRAPH_SEPARATOR) but is not also a non-breaking space (‘u00A0’, ‘u2007’, ‘u202F’). It is ‘t’, U+0009 HORIZONTAL TABULATION.

How do you remove the last space in a string?

If you want to remove spaces at the beginning (leading spaces ) and spaces at the end ( trailing spaces ) best way to do it is to use trim () method of the Java String class. As per trim () method space is defined as any character whose codepoint is less than or equal to ‘U+0020’ (the space character).

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 (it.next().equals(” “))
  7. {
  8. it. remove ();

How do I get rid of trailing space in Linux?

`sed` command is another option to remove leading and trailing space or character from the string data. The following commands will remove the spaces from the variable, $myVar using `sed` command. Use sed ‘s/^ *//g’, to remove the leading white spaces. There is another way to remove whitespaces using `sed` command.

How do I remove multiple spaces from a string in Java?

The “\s+” pattern matches one or more space characters. Use the replaceAll method of the String class which accepts a regular expression to replace one or more space characters with the single space to remove multiple spaces from the string as given below.

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How do I remove one character from a string?

Using ‘str. replace (), we can replace a specific character. If we want to remove that specific character, replace that character with an empty string. The str. replace () method will replace all occurrences of the specific character mentioned.

Can we convert StringBuilder to string in Java?

To convert a StringBuilder to String value simple invoke the toString() method on it. Instantiate the StringBuilder class. Append data to it using the append() method. Convert the StringBuilder to string using the toString() method.

How can I remove last character from a string in Java?

There are four ways to remove the last character from a string:

  1. Using StringBuffer. deleteCahrAt() Class.
  2. Using String. substring() Method.
  3. Using StringUtils. chop() Method.
  4. Using Regular Expression.

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