Question

I have a method want to refactor, and some dummy codes as below:

if(deletedInfo.isEmpty() && addedInfo.isEmpty()) {
    // some logic codes
} else if (!deletedInfo.isEmpty() && addedInfo.isEmpty()) {
    // some logic codes
} else if (deletedInfo.isEmpty() && !addedInfo.isEmpty()) {
    // some logic codes
} else if(!deletedInfo.isEmpty() && !addedInfo.isEmpty()) {
    // some logic codes
}

is there a appropriate pattern or some algorithm to refactor this codes?

Thanks.

Answer 1

if (deletedInfo.isEmpty()) {

    if (addedInfo.isEmpty()) {
        // some logic codes
    } else {
        // some logic codes
    }

} else {

    if (addedInfo.isEmpty()) {
        // some logic codes
    } else {
        // some logic codes
    }

}