Client to
If you press the button I provided on the Internet, You want a string and a random number to appear.
What I thought was
a123 . . . z123
Start with uppercase when lowercase ends
A123 . . . Z123
I want to make sure that lowercase letters come in when capital letters are over
aA123 . . . zZ123
When lowercase letters are finished, lowercase letters and uppercase letters are combined again
Aa123 . . . Zz123 The reason why we planned it this way is
I don't think it'll overlap if I think that's why Of course, I'm going to give you a random number.
I don't know what to do because I'm a beginner.
Can I get a hint?
java sql
I don't know the purpose, but...Why don't we make a set of alphabets and numbers and shuffle that set to get results?
java.util.Collections.shuffle(List<?>) returns a random mix of List objects.
For example, if you put elements a~z, 0~9 in the list and shuffle, you will randomly mix them and return them. This allows you to create random values without worrying about duplication.
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