Level 21: level plan and extras. materials - 1Level Plan:
  • Operator precedence
  • All methods of the Object class , methodtoString(
  • Methods equals& hashCode: why, where they are used, how they work
  • Introduction to waitmethodsnotifynotifyAll
  • Method clone, interface Cloneable .
  • Method finalize, try-with-resources(java7).
  • Method getClass(), Class object , introduction toReflection
Java courseWhat else you can watch in your spare time: Answers to interview questions on a level topic . Details about equals & hashCode Java Philosophy – Appendix A: Passing and Returning Objects Read only from the section Cloning Objects up to and including Copy Constructors . Chapter from Effective Java in English. By the way, a very good book, there is a Russian version. I recommend reading it, but not now, but towards the end of the Java Core course - after level 30. Now you need to read Thinking in Java (Java Philosophy) How to generate hashCode in Java
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