Question

I’m trying to create a method which checks if the Login (username and password) has a minimum of 6 charakters.

To realize that I created this method public void checkLoginData(final String username, final String password). In that method, I create to booleans (user and pass), with those I can create 4 different boolean-chains:

• user: true pass: true
• user: false pass: true
• user: false pass: false
• user: true pass: false

Now I’d like to do a switch/case request for each of them, but I don’t get how to realize that…

If you ask why I need the switch, I just think I need it, because I’d like to do for every of those 4 boolean-chains, that it does/show something diffrent. Also I’d like to do this in a sexy-java-way not with tousands of diffrent ‘ifs’ :P, Please help!

Here’s the code of the method:

public void checkLoginData(final String username, final String password){

    boolean user, pass;

    if (username.length() < 6){
        user = false;
    }else {
        user = true;
    }

    if (password.length() < 6){
        pass = false;
    }else {
        pass = true;
    }

    boolean[] logindaten = {user, pass};



}

---

Thx for the help in Advance!

Best Regards safari

Answer 1

You can’t switch over boolean[], only over integral types. To convert the booleans to an int, you could use a bit mask for the 2 booleans, like for example this:

int val = 0;
if (user) val |= 0x1;
if (pass) val |= 0x2;

switch (val) {
case 0: // Both too short
case 1: // User Ok, pass too short
case 2: // User too short, pass ok
case 3: // Both Ok
}