java原生类型占用内存大小

2021-11-26 本文已影响0人内沐

Type	Size (bits)	Size(byte)	Minimum	Maximum	Default	Example
byte	8	1	-27	27– 1	0	byte b = 100;
short	16	2	-215	215– 1	0	short s = 30_000;
int	32	4	-231	231– 1	0	int i = 100_000_000;
long	64	8	-263	263– 1	0L	long l = 100_000_000_000_000;
float	32	4	-151	(2-2-23)·2127	0.0f	float f = 1.456f;
double	64	8	-1076	(2-2-52)·21023	0.0d	double f = 1.456789012345678;
char	16	2	0	216– 1	u0000'	char c = ‘c';
boolean	1	–	–	–	FALSE	boolean b = true;

Java语言支持一些特殊的转义字符序列。