@"no conceptual need for " ... Negative numbers?!
@"no conceptual need for them."
Imagine trying to tell that to all the mathematicians throughout the past 2000 years and then see if you can't find any "conceptual need for them"!.
Just because Java chooses to omit them, doesn't mean there is no conceptual need for them! ... Negative integers are very useful and fundamental in many areas of work and its a total fuck up design flaw that the only way a language can support something so fundamental is via a library which slows its performance down. But then a lot of Java developers don't believe in thinking about performance either, so in their narrow myopic mind, there is no conceptual need for them. Try opening your mind and find conceptual needs for them, because if you don't others will and they will beat you in a competitive job marketplace.
But if you want to remain close minded and refuse to see what I'm saying, we can at least just console ourselves that there is one less competitor in the job market than we thought. But I find I can't shake off the despair I feel at some people's closed mindedness!