abstract interface Veloz { void metodo(String x); }

public class A {

    private abstract interface Veloz{ Number metodo(int x); }  // 0

    abstract static class B{  // 1
		
		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 {	}   // 2
			}
		}
	}

    public void test(){
		
		class Opa2 implements Veloz{

			public Integer metodo(int x) throws RuntimeException { // 3
				return (Integer)(int) .5f;  //4
			}
		}
	}
}