Evaluar si .java de un directorio forman parte d el proyecto y acceder a metodos

[LuisChavezB]

Puedes utilizar anotaciones:

Código Javascript:

/*
 * Copyright 2012 Leviathan.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package mx.com.leviathan.data.filter;
 
import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;
 
/**
 *
 * @author Leviathan
 */
@Target(ElementType.TYPE)
@Retention(RetentionPolicy.RUNTIME)
public @interface Filter {
 
    String author();
 
    String name();
 
    String version();
}
 

Código Javascript:

/*
 * Copyright 2012 Leviathan.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package mx.com.leviathan.data.filter;
 
import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;
 
/**
 *
 * @author Leviathan
 */
@Target(ElementType.METHOD)
@Retention(RetentionPolicy.RUNTIME)
public @interface FilterFunction {
 
    String[] params();
 
    Class<?>[] paramTypes();
 
    Class<?> returnType();
}
 

Aplicarlas:

Código Javascript:

@Filter(author = "Leviathan", version = "0.1", name = "Example")
public class FilterExample {
 
    @FilterFunction(params = {"firstName", "lastName"}, paramTypes = {String.class, String.class}, returnType = String.class)
    public String testString(String firstName, String lastName) {
        return firstName + lastName;
    }
}
 

y por medio de reflexión trabajar con la información proporcionada en las anotaciones.