Describe and contrast overloading in Java and Haskell.

Overloading in Java and Haskell are similar in concept but differ in implementation.

In Java, method overloading allows multiple methods to have the same name but with different parameters. The compiler determines which method to call based on the number and type of arguments passed. This allows for more flexibility and readability in code.

For example:

public int add(int x, int y) {
    return x + y;
}

public double add(double x, double y) {
    return x + y;
}

In Haskell, function overloading is achieved through the use of type classes. Type classes define a set of functions that can operate on a particular type. This allows for polymorphic behavior and avoids the need for explicit type annotations.

For example:

class Addable a where
    add :: a -> a -> a

instance Addable Int where
    add x y = x + y

instance Addable Double where
    add x y = x + y

In this example, the `Addable` type class defines the `add` function for types that are instances of the type class. The `instance` keyword is used to define specific implementations of the function for different types.

Overall, overloading in Java and Haskell serve similar purposes but differ in syntax and implementation. Java uses method overloading with different parameter types, while Haskell uses type classes to provide polymorphic behavior.