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Java String toLowerCase()
The java string toLowerCase() method returns the string in lowercase letter. In other words, it converts all characters of the string into lower case letter.
The toLowerCase() method works same as toLowerCase(Locale.getDefault()) method. It internally uses the default locale.
Internal implementation
Signature
There are two variant of toLowerCase() method. The signature or syntax of string toLowerCase() method is given below:
The second method variant of toLowerCase(), converts all the characters into lowercase using the rules of given Locale.
Returns
string in lowercase letter.
Java String toLowerCase() method example
Output:
tutoraspire hello string
Java String toLowerCase(Locale locale) Method Example 2
This method allows us to pass locale too for the various langauges. Let’s see an example below where we are getting string in english and turkish both.
Output:
tutoraspire hello string tutoraspire hello str?ng
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