This file looks weird, but it compiles

[Joe Allen]

import java.io.*;

abstract interface Veloz { void metodo(String x); }
public class A {
private abstract interface Veloz{ Number metodo(int x); }
abstract static class B{
private abstract static interface Veloz{void metodo(long x) throws Exception;}
public void metodo(){
class Opa implements Veloz{
public void metodo(long x) throws IOException { }
}
}
}
public void test(){
class Opa2 implements Veloz{
public Integer metodo(int x) throws RuntimeException {
return (Integer)(int) .5f;
}
}
}
}
===========================
private abstract static interface?
abstract static class?
I don't understand. Hopefully I don't get all confused and messed up before taking the exam.

[Zhenyi Luo]

Joe Allen wrote:import java.io.*;

abstract interface Veloz { void metodo(String x); }
public class A {
private abstract interface Veloz{ Number metodo(int x); }
abstract static class B{
private abstract static interface Veloz{void metodo(long x) throws Exception;}
public void metodo(){
class Opa implements Veloz{
public void metodo(long x) throws IOException { }
}
}
}
public void test(){
class Opa2 implements Veloz{
public Integer metodo(int x) throws RuntimeException {
return (Integer)(int) .5f;
}
}
}
}
===========================
private abstract static interface?
abstract static class?
I don't understand. Hopefully I don't get all confused and messed up before taking the exam.

Interfaces can be members of class definitions and can be declared private or protected there. Inner class is similar.

[Robert Kristofic]

class in class which is static is static nested class (not static is inner class).

Nested classes