Concepts of core java

Brief overview on java

1. Concepts of CORE JAVA By AKSHITA MANGRULKAR

2. W h a t i s Ja v a ?

3. Features of Java

4. Java Variables A variable is a container which holds the value while the  Java program   is executed. Data Types in Java Data types specify the different sizes and values that can be stored in the variable. There are two types of data types in Java: Primitive data types: The primitive data types include Boolean , char, byte, short, int, long, float and double. Non-primitive data types: The non-primitive data types include  Classes ,  Interfaces , and  Arrays . Eg. Int age=20; Value Variable_name Data Type

5. Operators in Java Operator  in  Java  is a symbol which is used to perform operations. For example: +, -, *, / etc.

6. Java Keywords Java keywords are also known as reserved words. Keywords are particular words which acts as a key to a code. These are predefined words by Java so it cannot be used as a variable or object name.