In java, basic types can be converted to each other, boolean types are special and cannot be converted to other types.
Conversion is divided into default conversion and forced conversion :.
■ Default conversion: The type with small capacity will be converted to the type with large capacity by default.
◆ byte–> short–> int-> long-> float–> double (max)
char–>
◆ Calculation between byte, short and char will not be converted between each other, first convert to int
forced conversion +
◆ The capacity will be large Type conversion into a type with a small capacity requires a forced conversion.
Note: As long as it does not exceed the range, integer values can be directly assigned to byte, short, char.
In a mixed operation of multiple types, first convert all data to the one with the largest capacity, and then calculate.
