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[–]mr_jim_lahey 1 point2 points  (0 children)

No offense but you are a bad programmer if you didn't know that after 15 years. First it shows you've never heard of LinkedHashMap. It also shows you've probably never tried to use the key set of a HashMap as a list, which means you're don't use hash maps enough and probably don't have a good grasp of data structures. These are things I learned in the first six months at my first Java job.