Which string class method returns a copy of the string with all leading and trailing spaces removed?

In this tutorial, we will learn about the Python String strip() method with the help of examples.

The strip() method returns a copy of the string by removing both the leading and the trailing characters (based on the string argument passed).

Example

message = ' Learn Python '

# remove leading and trailing whitespaces print('Message:', message.strip())

# Output: Message: Learn Python


Syntax of String strip()

The syntax of the strip() method is:

string.strip([chars])

strip() Parameters

  • chars (optional) - a string specifying the set of characters to be removed from the left and right part of the string.

The strip() method removes characters from both left and right based on the argument (a string specifying the set of characters to be removed).

Note: If the chars argument is not provided, all leading and trailing whitespaces are removed from the string.


strip() Return Value

strip() returns a copy of the string with both leading and trailing characters stripped.


Working of the strip() method

  • When the character of the string in the left mismatches with all the characters in the chars argument, it stops removing the leading characters.
  • Similarly, when the character of the string in the right mismatches with all the characters in the chars argument, it stops removing the trailing characters.

Example: Working of the strip() method

string = ' xoxo love xoxo ' # Leading and trailing whitespaces are removed

print(string.strip())

# All ,x,o,e characters in the left # and right of string are removed

print(string.strip(' xoe'))

# Argument doesn't contain space # No characters are removed. print(string.strip('stx')) string = 'android is awesome'

print(string.strip('an'))

Output

xoxo love xoxo lov xoxo love xoxo droid is awesome

Here, we can see that the first expression string.strip() without any arguments removed the whitespaces from the left and right of string.

  • string.strip(' xoe') - Removes all whitespace, x, o, and e that lead or trailed the string.
  • string.strip('stx') - Since string has whitespace at the beginning and end, this expression does not change the string. x is not removed since it is at the middle of the string (whitespaces lead and trail the string)
  • string.strip('an') - Removes an leading the string.

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Which string class method returns a copy of the string with all leading and trailing spaces removed?
Which string class method returns a copy of the string with all leading and trailing spaces removed?
Which string class method returns a copy of the string with all leading and trailing spaces removed?
Which string class method returns a copy of the string with all leading and trailing spaces removed?
Which string class method returns a copy of the string with all leading and trailing spaces removed?
Which string class method returns a copy of the string with all leading and trailing spaces removed?
Which string class method returns a copy of the string with all leading and trailing spaces removed?
Which string class method returns a copy of the string with all leading and trailing spaces removed?

How to remove only trailing spaces of a string in Java and keep leading spaces?

Tags: string , java , trim , android Answers: 1 | Viewed 56,965 times

The trim() function removes both the trailing and leading space, however, if I only want to remove the trailing space of a string, how can I do it?



Micha Wiedenmann answer at 2013-06-07 81



Since JDK 11

If you are on JDK 11 or higher you should probably be using stripTrailing().




Earlier JDK versions

Using the regular expression \s++$, you can replace all trailing space characters (includes space and tab characters) with the empty string ("").


final String text = " foo ";
System.out.println(text.replaceFirst("\\s++$", ""));

Output


foo

Online demo.

Here's a breakdown of the regex:



  • \s – any whitespace character,

  • ++ – match one or more of the previous token (possessively); i.e., match one or more whitespace character. The + pattern is used in its possessive form ++, which takes less time to detect the case when the pattern does not match.

  • $ – the end of the string.

Thus, the regular expression will match as much whitespace as it can that is followed directly by the end of the string: in other words, the trailing whitespace.

The investment into learning regular expressions will become more valuable, if you need to extend your requirements later on.

References



  • Java regular expression syntax


* The answers/resolutions are collected from stackoverflow, are licensed under CC BY-SA 4.0

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Please leave your answer here:

How do you remove leading and trailing spaces from a string?

To remove leading and trailing spaces in Java, use the trim() method. This method returns a copy of this string with leading and trailing white space removed, or this string if it has no leading or trailing white space.

What string method returns a copy of the string with all trailing whitespace characters removed?

The strip() string method returns a copy of the string with all leading and trailing whitespace characters removed.

How do you remove trailing spaces from a string?

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

What does strip () do in Java?

strip() is an instance method that returns a string whose value is the string with all leading and trailing white spaces removed. This method was introduced in Java 11. If the string contains only white spaces, then applying this method will result in an empty string.