anon classes^lambda: java perf #class file loading

Based on [[JavaPerm]] P381

  • An anon class requires an actual *.class file created by javac compiler and loaded from serialized form (usually disk).
  • No such class file for a lambda.

This difference has very limited performance impact, as of java 8. However, More than half the interview questions are about fancy theoretical knowledge, so this is knowledge valuable to interviews.

 

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