Clarification on this subject within java.

Then my question is wrong. I mean more on the topic Practice with variable visibility. But thanks for the reply!!

With "variable visibility", do you mean the different access modifiers (public, private...) in front of the variable or the actual visibility within a class/file/programme/method? The former will be covered later on in the course. For now it is enough to know that it has something to do with accessibility of certain fields or values from outside (other files, other packages, etc. ). If you want a very condensed overview about this whole "hierarchy of access"-thing and what it is good for, I recommend the material on hyperskill (which, by the way, is another great yet sometimes extremely challenging online java course). For the latter, I think the starting point is to understand that your code blocks are all nested inside one another. This means that the variables you declare on the outside (or further up) are definitely visible, readable, and writable further inside, but not the other way round:

int iAmVisibleAllTheTime = 0;
int meToo;

    if (someCondition){
        int onlyVisibleInsideIfStatement=1;
    } else {
        meToo = 3; //you have still access to this variable, because you declared it outside
    }
iAmVisibleAllTheTime = 7;
onlyVisibleInsideIfStatement = 4; //Error! Will not work, because you declared int further inside

Notice that it is important on which level/hierarchy you declare the variables, not where you actually initialize / assign a value to them.

Many Thanks. Its getting to me now. Cheers