public Number doThing() {
    Number x = 1; // x seems to be equal to 1
    return x + 1;
}

public boolean doThing2(Number x) {
    if (x == 1) {
        return true;
    }
    return false;
}

public Number doThing3() {
    Number x = 1;
    return x + 1;
}

public void doThing4() {
    Number x = 1;
    x = 85;
}