Question

Just want to confirm if Salesforce Apex don’t support parameters like Java and other languages?

For example:

It’s a simple function with parameters in Java. And, Salesforce Apex DO NOT support such kind of syntax. Am I right?

public int mult(int x, int y)
{
   return x * y;
}

Salesforce can pass parameters from Javascript or Visualforce Page to Apex, however, I never see parameters within function/class in Apex language so just want to make sure it. If Salesforce have function and parameters then we can write apex code more with efficient structure.

Added by 2012-12-18 ===========================
Thanks Gerard Sexton, it works.

Sample codes:

public class MyClass {
    public integer mult(integer x, integer y)
    {
        return x * y;
    }
}

MyClass m = new MyClass();

System.debug(m.mult(3,4));

The result is 12.

Answer 1

Apex does support method parameters.

Here are the docs for defining a class method.

public class MyClass {
    public static integer mult(integer x, integer y)
    {
        return x * y;
    }
}

These methods can be accessed and used ONLY within APEX. To use data passed in from a Visualforce page, please see these docs for an example.

In the visualforce example they use searchText as a class instance property, but in standard programming languages we would pass it in as a method parameter.