Help with anonymous classes [Java]

Question

I don't undertand the coding couch to anonymous classes. when the second object is created: it doesn't end with semi-colon insted there is a {
why???

public class Main
{
public static void main(String[] args) {

Purchase customer = new Purchase();
Purchase specialCustomer = new Purchase(){
//I don't get the following part
public int totalAmount(int price) {
return price - (price*20)/100;

}

};

System.out.println(customer.totalAmount(1000));
System.out.println(specialCustomer.totalAmount(100000));
}
}

class Purchase {
int price;

public int totalAmount(int price) {
return price - (price*10)/100;
}
}

Answer 1

An anonymous class is a special type of class that has no name. It is declared and instantiated in the same statement, and it can be used to create an instance of a class without having to define a new class. In the example code you provided, an anonymous class is being used to create a special purchase instance with a different totalAmount method. The code block after the declaration of the specialCustomer object is the anonymous class, which defines the new totalAmount method. The code block ends with a closing brace '}' instead of a semicolon to indicate that it is a code block, rather than just an ordinary object declaration.