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How to remove the backslash in string using regex in Java?
For example:
hai how are\ you? I want only:
hai how are you? 
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To remove all backslashes from a string:Call the replaceAll method, passing it a string containing 2 backslashes as the first parameter and an empty string as the second - str. replaceAll('\\', '') . The replaceAll method returns a new string with all of the matches replaced.
If you want to match a backslash in your regular expression, you'll have to escape it. Backslash is an escape character in regular expressions. You can use '\\' to refer to a single backslash in a regular expression. However, backslash is also an escape character in Java literal strings.
Replacing a Single Backslash( \ ) With a Double Backslash( \\ ) Using the replaceAll() Method. This is another solution that you can use to replace the backslashes. Here, we used the replaceAll() method that works fine and returns a new String object.
str = str.replaceAll("\\\\", ""); or
str = str.replace("\\", ""); replaceAll() treats the first argument as a regex, so you have to double escape the backslash. replace() treats it as a literal string, so you only have to escape it once.
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