What is the Difference Between `fn(String... args)` and `fn(String[] args)` in Java?

What is the difference between the syntax `fn(String... args)` and `fn(String[] args)` in Java?

function(String... args) 
function(String[] args)

In Java, both `fn(String... args)` and `fn(String[] args)` denote methods that can accept a variable number of string arguments. However, there are essential differences in their syntax usage, invocation, and handling of parameters.

public void exampleVarargs(String... args) {
    for (String arg : args) {
        System.out.println(arg);
    }
}

public void exampleArray(String[] args) {
    for (String arg : args) {
        System.out.println(arg);
    }
}

// Examples of invoking both methods:
exampleVarargs("one", "two", "three"); // Works with varargs
exampleArray(new String[]{"one", "two", "three"}); // Requires an array

Causes

• The `String... args` syntax is known as varargs (variable-length arguments). It allows you to pass zero or more arguments to the method, effectively treating them as an array within the method.
• The `String[] args` syntax explicitly requires an array as an argument. It can accept an existing array or an explicitly created array of strings.

Solutions

• When using `String... args`, you can call the method with any number of string arguments or even none at all. Example: `fn("arg1", "arg2");` or `fn();`
• With `String[] args`, you must pass an array to the method. Example: `String[] myArgs = {"arg1", "arg2"}; fn(myArgs);`.

Mistake: Assuming `fn(String... args)` and `fn(String[] args)` are completely interchangeable.

Solution: While they can both receive multiple string arguments, they differ in how you invoke the methods.

Mistake: Not recognizing that `String... args` can be used in method overloading.

Solution: Varargs can facilitate method overloading scenarios where the function can accept different sets of arguments.