B b = new B();
BeanCopier.create(classFrom, classTo, false).copy(a,b,null);

B b = new SimpleBeanCopier(A.class,B.class).copy(a);

1,000,000 round
jdk set/get takes 17ms
cglib takes 117ms
abc(reflection version) takes 496ms
jodd takes 5309ms
apche beanutils takes 6264ms

@Service
public class A2BBeanCopier extends BeanCopier<A,B> {

	@PostConstruct
	public void init(){
		setSourceClass(A.class);
		setTargetClass(B.class);
		super.init();
	}

	@Override
	public B postCopy(A source, B target) {
		target.setF5("aaa");
		return target;
	}
}

BeanCopier<A, B> beanCopier = new SimpleBeanCopier<A, B>(A.class, B.class);
listB = Lists.transform(listA, beanCopier);
listA = Lists.transform(listB, beanCopier.reverse());