Intermediate level java

Here we deal with more complex topics in java such as:

Object oriented ideas

• classes

  • static methods

  • static fields

  • constructors

  • accessors

• objects

  • instance methods

  • instance fields

• Interfaces

• abstract classes

• Inheritence

Enums

Packages and imports

• paths

• naming

Common classes/libraries

• String

  • REGEX

• ArrayList/List

• Map/HashMap

• ZoneDateTime

Exceptions

• Checked

• Unchecked

• try/catch

• try with resources

Comparators

• Comparable interface

• compareTo

Generics

• PECS

• wildcards

• casting

• types