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143. Using 'toLowerCase( )' and 'toUpperCase( )' methods







toLowerCase( ) method is used to convert all the characters in the specified string from Upper case to Lower case.
toUpperCase( ) method is used to convert all the character in the specified string from Lower case to Upper case.

Examples:

"This is a Test Statement".toLowerCase( );  -> This will convert all the upper case letters in the specified string to lower case -> The resulting string after conversion will be "this is a test statement"

"This is a Test Statement".toUpperCase( );  -> This will convert all the lower case letters in the specified string to upper case -> The resulting string after conversion will be "THIS IS A TEST STATEMENT"

Lets implement this on Eclipse IDE:

1. Create 'toLowerCasetoUpperCaseDemo' class under any project as shown below:



2. Save and Run the 'toLowerCasetoUpperCaseDemo' class file
3. Observe that the output is displayed in the console as shown below:



Download this project:

Click here to download the project containing the class file used in this post (You can download this project and import into Eclipse IDE on your machine)




Please comment below to feedback or ask questions.

String Buffer will be explained in the next post.



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