Yes,an inner class may be built an Interface.
public interface xyz
{
static int p=0;
void m();
class c
{
c()
{
int q;
System.out.println(“inside”);
}
public static void main(String c[])
{
System.out.println(“inside “);
}
};
}
In Java, as of my last knowledge update in January 2022, an inner class can be defined within an interface. These are called “nested interfaces” or “nested classes.” There are two types of nested classes in Java: static and non-static (also known as inner classes).
Here’s an example of an interface with a nested class:
public interface MyInterface {
// Regular interface methods
// Nested class (static inner class)
static class MyNestedClass {
// Code for the nested class
}
// Another nested class (non-static inner class)
class AnotherNestedClass {
// Code for the non-static inner class
}
}
In the example above, MyNestedClass is a static nested class, and AnotherNestedClass is a non-static nested class (inner class). You can define nested interfaces similarly within an interface.
It’s important to note that starting from Java 8, interfaces can also have static and default methods, providing more flexibility in terms of functionality. However, as of my last knowledge update, interfaces cannot contain non-static fields or constructors.
Always refer to the latest Java documentation or resources for the most up-to-date information, as Java evolves with new releases.