Using Boolean Object

Question

I am having problems trying to get the result I want. Basically, what I want to do is to have a Boolean object that will allow me to have 3 options, if the mail program is old, I want it to be set to false (the value does not contain "mapQ.cmd" and "add- coid.cmd ")

if the mailer is new, I want it to be set to true (if it is new, it will contain the mapQ.cmd and add-coid.cmd files in the directory), and if it is not old or new mail (then there is no mailer), then I want it to be zero.

This is what I have, I want to put elseif instead of else and do another inside to set the value to zero, which means no higher, and then I want to return a boolean value. local-build-deploy.cmd is used in the example, but I want to use the above file names

private boolean isOldMailer(File mailerFolder) {
    File localBuildAndDeploy = new File(mailerFolder,"test/local-build-deploy.cmd");
    if (localBuildAndDeploy.exists()) {
        return true;
    } else {
        return false;
    }
}

Answer 1

There are two ways to do this.

If you insist on using Boolean, use Capital B instead of lowercase b. Capital B Boolean is an object and can be set to null and do what you describe. The lowercase b boolean is primitive and cannot be set to null.

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public enum Status { NEW, OLD, NEITHER }

private Status isOldMailer(File mailerFolder) {
    File localBuildAndDeploy = new File(mailerFolder,"test/local-build-deploy.cmd");
    if (localBuildAndDeploy.exists())
        return Status.NEW;
    else if (/*Something else*/)
        return Status.OLD
    else
        return Status.NEITHER;
}

Answer 2

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Answer 4

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