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My computer science teacher encountered this strange string while working with another student one day after class. The assignment was using Scanner and stepping through a string by delimiter. java.util.Scanner[delimiters=\p{javaWhitespace}+][position=0][match valid=false][need input=false][ source closed = false ][skipped=false][group separator=\,][decimal separator=\.][positive prefix=][negative prefix=\Q-\E][positive suffix=][negative suffix=][NaN string=\Q?\E][infinity string=\Q∞\E] Doesn’t that looks like a scary mess? Actually, it’s not [...]