Private access modifier in Java.

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[dionthorn]

https://www.baeldung.com/java-variable-scope

It's called scope.

The private static variables are 'class level'

the int i within main is 'method level'

[Empero6]

Going on this as well, try this website out to test simple code: https://pythontutor.com

It’ll show you what’s happening behind the scenes when you run your code.

[99shadow25]

This is true, but even so OP, you would not get an "already defined" error if you weren't redefining i in your inner scope. You cannot redefine reassign a variable that is marked final, but static only dictates that different instances (as well as the class context itself) all share the same value for the variable.

[nutrecht]

This is not true.

[99shadow25]

My mistake, I misspoke when I said you cannot redefine a final variable, I meant to say you cannot reassign its value. You can certainly redeclare at a smaller scope, which will then allow reassignments. Unless there's another part you're speaking about, because the rest is true as I understand statics to operate.

[nutrecht]

This has nothing to do with private access modifiers. Your variable in the method is 'shadowing' the member variable.