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

0 vote149 views1 answer
Calling activity method from fragment:
Java
0 vote183 views1 answer
Reponse entity as result spring controller
Java Spring
0 vote151 views1 answer
Int a[ ]={4,8,3,2}; a[0] = 23; a[3]= a[1]; a[2]=12; for(int i=0; i<a.length; i++) System.out.println(a[i]);
Java
0 vote158 views1 answer
Java program to swap two numbers using bitwise xor operator
Java
5 votes144 views2 answers
Gradle springboot run
Java
0 vote167 views1 answer
.int x=5; final int y=7; x=x+10; y=y+10;
Java
0 vote145 views1 answer
How to open a folder in java swing project
Java
0 vote145 views1 answer
How to check if something exists in an sql column java
Java
1 vote143 views1 answer
Android run background service on startup
Java
0 vote152 views1 answer
Java operater == char
Java