Java Basic data types

Divided into four categories of 8 basic forms and a string

1. Integer type:

From small to large:

Byte range -128~127 is 2 of the 8-time Square

Short is 2 of the 16-time Square

Int is 2 of the 32-time Square

Long is 2 of the 64-time Square

2. Float Type:

for float;

Double

3. Boolean type:

Boolean has only two values of ture false

4. Character type

Char

There is also a string that does not belong to 8 basic types;

String;

In addition, the definition of the underlying type cannot be empty;

Type conversions are sequential and large to small:

Double float long int char short byte;

The following three values default to int

Conversion order implicit conversions from low to high display conversions from high to low;

Java Basic data types