Java cheatsheets
Primitive Data Types
Non-object data types supported by Java.
More >>String
Reference data type for storing text data, which has some properties of primitive data types.
More >>Input/output
Printing data to CLI output, and prompting users of the program to input data.
More >>Object-Oriented Programming
Usage of classes, interfaces, enums, access modifiers, and other elements of OOP.
More >>Loops and Iteration
Usage of loops and other ways to iterate on arrays, Strings, Collections.
More >>Streams
Create a sequence of elements from numbers, an array or a collection, and execute sequential or parallel operations on it. Often used to replace loops in Java 11 and higher.
More >>Array
The most basic data structure to store multiple piece of data of the same type.
More >>Lists
The most common Collection types, used to store elements in a fixed order.
Coming soon...Maps
Collections to store data organized into key-value pairs.
Coming soon...