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Core Java (OOP (inheritance (extends, implements), polymorphism…
Core Java
OOP
encapsulation
getter/setter
inheritance
extends
implements
polymorphism
overriding
overload
abstract
abstract class
interface class
Other Topics
Exception Handling
Threads
I/O
Serialization
working with files
PDF
Excel
txt
Conditionals
if
switch case
Class & Objects
Object
Attributes
Method
Method return type
Constructor
Modifier
access modifier
non-access modifier
Loops
for
while
Basic
data types
8 primitive type
Collections
set
HashSet
TreeSet
list
ArrayList
LinkedList
map
HashMap
TreeMap
enums
String
generic <>
Force data
casting
down casting
Arrays