Java core:
- what is boxing / unboxing,
- primitive and wrappers code example with objects , string , int comparison, comparison with casting.
- Integer new syntaxt with _
- Contructors example, static blocks, empty block
- equals override: InstanceOf or vs reflection wich one is better
- Minuses of garbage collector

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Java core: 
- what is boxing / unboxing, 
- primitive and wrappers code example with objects , string , int comparison, comparison with casting.
- Integer new syntaxt with _
- Contructors example, static blocks, empty block
- equals override: InstanceOf or vs reflection wich one is better
- Minuses of garbage collector

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