What is the method for defining variables and assigning values in Java?

In Java, the method of defining a variable and assigning a value is to first declare the data type of the variable, and then use the assignment operator “=” to assign a value to the variable.

For example, define an integer variable and assign it a value of 10:

int num = 10;

In this example, int is the data type, num is the variable name, and 10 is the value assigned to the variable num. After declaring the variable, it can be used in the program for various operations.