Java Type Casting: A Complete Guide

In Java, type conversion functions are typically referred to as type casting operators. Type casting operators are used to convert one data type to another.

To use a type conversion function, you need to add the target data type in front of the variable, as shown below:

int num1 = 10;
double num2 = (double) num1; // 将int类型的变量num1转换为double类型

In the example above, (double) is a type conversion operator that converts the variable num1 of type int to type double, and assigns the result to num2.

It is important to be aware that converting data types may result in loss of data or precision. Therefore, it is important to handle type conversions carefully.