What are the differences between nested if and &&?

Question

What are the differences between writing:

if(condition1 && condition2){
    //some code
}

And:

if(condition1){
    if(condition2){
        //some code
    }
}

If there are any, which one is better?

Answer 1

The differences are mainly in readability and maintenance.

Concatenation of 2 logical conditions should usually imply that there is a semantic relation between them.

Another thing to consider is the scoping. The nested if gives you additional flexibility in this area.