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What are the eight basic data types in java

王林
王林Original
2020-07-07 13:27:543934browse

The eight basic data types in Java are: 1. Integer type, including byte, short, int, long; 2. Floating point type, including float, double; 3. Character type (char); 4. Boolean.

What are the eight basic data types in java

The eight basic data types in java:

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1. Integer type

1.byte 
//字节型 1byte 8位 (-2^7 ~ 2^7 - 1) 例如:byte n = 8;
2.short 
//短整型 2byte 16位 (-2^15 ~ 2^15 - 1) 例如: short n = 8888;
3.int 
// 整形 4byte 32位(-2^31 ~ 2^31 - 1) 例如: int n = 88888888; 
4.long 
//长整型 8byte 64位 (-2^63 ~ 2^63 - 1) 例如: long l = 12345678901234567890L;

2. Floating point type

1.float 
//单精度 4byte 32位(1.4E - 45 ~ 3.4028235E38)例如:float f = 3.14f;
2.double 
//双精度 8byte 64位(4.9E - 324 ~ 1.7976931348623157E308) java中小数常量默认为double,如果要给float变量赋值则要加F或f

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3. Character type

1.char //字符型 2byte 16位(0 ~ 2^16 - 1) 占两个2字节,存储Unicode值 例如: char n = 'A';

4. Boolean type

1.boolean //boolean为布尔基本类型。

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