Go Language for Java Developers Part 3

In Java, we have primitive data types and objects. Java support 8 primitive data types:

Data Type	Value
byte	0
short	0
int	0
long	0L
float	0.0f
double	0.0d
char	'\u0000'
boolean	false

Reference: https://docs.oracle.com/javase/tutorial/java/nutsandbolts/datatypes.html

The Go language is a statically typed programming language. This means that variable always has specific type that can't be changed. The Go language data type can be divided in main three categories:

Boolean: A boolean type represents the set of Boolean truth values denoted by the predeclared constants true and false. The predeclared boolean type is bool.
Numeric: A numeric type represents sets of integer or floating-point values. The predeclared architecture-independent numeric types are: int, float32, float64, etc
String: A string type represents the set of string values. A string value is a (possibly empty) sequence of bytes. Strings are immutable: once created, it is impossible to change the contents of a string. The predeclared string type is string.

Data Type	Default Value	Range
bool	false	true or false
int	0	either int32 or int64
int8	0	signed 16-bit integers (-32768 to 32767)
int16	0	signed 16-bit integers (-32768 to 32767)
int32	0	signed 32-bit integers (-2147483648 to 2147483647)
int64	0	signed 64-bit integers (-9223372036854775808 to 9223372036854775807)
uint	0	either 32 or 64 bits
uint8	0	unsigned 8-bit integers (0 to 255)
uint16	0	unsigned 16-bit integers (0 to 65535)
uint32	0	unsigned 32-bit integers (0 to 4294967295)
uint64	0	unsigned 64-bit integers (0 to 18446744073709551615)
float32	0	IEEE-754 32-bit floating-point numbers
float64	0	IEEE-754 64-bit floating-point numbers
string

Reference: https://golang.org/ref/spec#Types

Next article we will learn about variables in the Go Language

Go Language for Java Developers Part 3

Part 3 of a 5 part series that explains the Go language to Java developers.

More Reading

Java Partner Resources