Singleton.java

package com.jdon.annotation;

import static java.lang.annotation.ElementType.TYPE;
import static java.lang.annotation.RetentionPolicy.RUNTIME;

import java.lang.annotation.Documented;
import java.lang.annotation.Retention;
import java.lang.annotation.Target;

/**
 * @Component
 * is equals to:
 * <component name="abc" class="com.sample.Abc" />
 * 
 * @Component's name will be the class's getClass.getName();
 * Component not open for the client, so default no need name,
 * but if you call the component from the client, you can use 
 * the @Component's name(class's getClass.getName()).
 * 
 */
@Target(TYPE)
@Retention(RUNTIME)
@Documented
public @interface Singleton {	
}