Primitive Type vs. Reference Type

int a = 11; // Primitive Type 

Integer b = new Integer(11); // Reference Type

Source: stackoverflow.com

Primitive Type vs. Reference Type

+================+=========+===================================================================================+
| Primitive type | Size    | Description                                                                       |
+================+=========+===================================================================================+
| byte           | 1 byte  | Stores whole numbers from -128 to 127                                             |
+----------------+---------+-----------------------------------------------------------------------------------+
| short          | 2 bytes | Stores whole numbers from -32,768 to 32,767                                       |
+----------------+---------+-----------------------------------------------------------------------------------+
| int            | 4 bytes | Stores whole numbers from -2,147,483,648 to 2,147,483,647                         |
+----------------+---------+-----------------------------------------------------------------------------------+
| long           | 8 bytes | Stores whole numbers from -9,223,372,036,854,775,808 to 9,223,372,036,854,775,807 |
+----------------+---------+-----------------------------------------------------------------------------------+
| float          | 4 bytes | Stores fractional numbers. Sufficient for storing 6 to 7 decimal digits           |
+----------------+---------+-----------------------------------------------------------------------------------+
| double         | 8 bytes | Stores fractional numbers. Sufficient for storing 15 decimal digits               |
+----------------+---------+-----------------------------------------------------------------------------------+
| char           | 2 bytes | Stores a single character/letter or ASCII values                                  |
+----------------+---------+-----------------------------------------------------------------------------------+
| boolean        | 1 bit   | Stores true or false values                                                       |
+----------------+---------+-----------------------------------------------------------------------------------+

Source: stackoverflow.com

Similar codes

12 votes210 views3 answers
Smart ways to print a matrix in java
Java
1 vote191 views1 answer
Get day of week java
Java
1 vote197 views1 answer
Convert java date to sql date
Java
1 vote223 views1 answer
Declaration and definition of array in java
Java
0 vote220 views1 answer
How to load template file from resource folder in spring boot project
Java
0 vote204 views1 answer
Association in java
Java
0 vote186 views4 answers
His version of the Android Support plugin for IntelliJ IDEA (or Android Studio) cannot open this project, please retry with version 4.2 or newer.
Java
2 votes160 views1 answer
Error: java_home is not set and could not be found.
Java
7 votes186 views1 answer
AdapterView OnItemClickListener
Java
18 votes190 views6 answers
Android java get current time
Java