JAVA 8 Big Data types

8 large basic data types

8 Number of bits in memory used by the large base data type:

automatic conversion of basic data types:

Automatic type conversion, also known as implicit type conversion, refers to a type conversion that is done automatically by the system without writing code. Because of the many types of conversions in real-world development, the Java language was designed so that it did not design the syntax for the operation, but was done automatically by the JVM. Automatic conversions are converted in order from low to high. The priority relationships between different types of data are as follows:

Low---------------------------------------------> High

byte,short,char-> int, long, float---double

Operations, different types of data are converted to the same type first, then the operation, the conversion rules are as follows:

conversions for basic data types:

Coercion type conversions, also known as explicit type conversions, are type conversions that must be written in order to complete the code. This class type conversion is likely to have a loss of precision, so you must write the appropriate code and be able to tolerate that type of conversion.

Conversion rules: From a type with a large storage range to a type with a small storage range.

The specific rules are: Double→float→long→int→short (char) →byte

The syntax format is: (the type converted to) the value that needs to be converted

Note: Small turn assembly has lost the accuracy of the problem!

JAVA 8 Big Data types