Unnecessary 'else' statement [duplicate]

Answer 1

If I trace the following code, I will notice that the first if-block is an exceptional code block. However, if I add an "else" to that, I may treat both are operational code block.

Also, for the main operational block, there may be some nested blocks. I prefer minimizing the nested level.

public String myMethod(input) {
    if (!validate(input)) {
        return "invalid input";
    }

    operation1();
    if (someCondition) {
        operation2();
    } else {
        operation3();
    }
    operation4();
    operation5();
    return operation6();
}