Java equals() ordering

Question

If I try to do a .equals() on a null string in java, a null pointer exception will be thrown. I am wondering, if I am trying to compare if a string is equal to

Answer 1

If you are concerned about the quality of your code, write a helper class that takes care of equality test:

public class ObjectHelper {
    public static boolean testEquality(Object o1, Object o2) {
        if (o1 == null && o2 == null) return true;
        if (o1 == null) return false;
        return o1.equalts(o2);
    }
}

Then use it like this:

if (ObjectHelper.testEquality(aStringVariable, My_CONSTANT_STRING))

Your so-called constant MIGHT stop being constant. It might be read from a configuration file some time in the future.