When defining arguments in a method, how must they be declared?

In programming, when defining arguments in a method, they must be separated in parentheses. This is a standard syntax requirement across many programming languages, which specifies that any input parameters the method will accept must be enclosed within parentheses immediately following the method's name.

For example, in a method declaration like void myMethod(int a, String b), the arguments int a and String b are defined within the parentheses. This clearly indicates to the compiler or interpreter that these are the parameters being passed to the method. Properly declaring arguments in parentheses allows for multiple parameters to be provided, each separated by a comma, enhancing method functionality and enabling flexible data handling.

This approach avoids confusion and ensures that the method's interface is explicitly defined when it is called in the program, allowing for predictable behavior. Understanding this is crucial for writing effective methods and leveraging function calls in programming.