iyengarajay

import java.util.function.Function;

public class BaseText implements Function<String,String>{
	
	public BaseText(){
	}
 
	@Override
	public String apply(String t) {	
		return t;

iyengarajay

public abstract class TextDecorator implements Text 
{
	Text text;

	public TextDecorator(Text text) {
		this.text = text;
	}

	public abstract String format(String s);
  

iyengarajay

private List<Person> getPeopleWithFilter(List<Person> persons, Predicate<Person> personFilter)
{
	return persons.stream()
                      .filter(personFilter)
                      .collect(Collectors.toList());
}