In Java, uppercase and lowercase letters are converted to each other (not using the Java method ).
Conversion of uppercase and lowercase letters in Java (not using the built-in Java method)
1. Design source code
/***** @ Title: UpperAndLower. java * @ Package: com. you. utils * @ Description:
2. design results
**************************************** **************************************** * ***** Converts lowercase letters into uppercase letters: ABCDEFGHIKDOERTIOJKSKDKJFKDJFKDFJKABCDEFGHIJKLMNOPQRSTUVWXYZ *************************************** **************************************** * ***** converts uppercase letters into lowercase letters: *************************************** **************************************** * ***** uppercase and lowercase letters are converted to each other: *************************************** **************************************** *******