convert between string rappresentations of dates. example: from("yyyy-MM-dd").to("dd/MM/yyyy").convert("1987-12-01"); // results in 01/12/1987

DateConverter.java

import java.text.ParseException;
import java.text.SimpleDateFormat;

public final class DateConverter {
	private SimpleDateFormat formatterFrom;
	private SimpleDateFormat formatterTo;
	
	private DateConverter(){
		super();
	}
	
	public static DateConverter from(String pattern){
		DateConverter converter = new DateConverter();
		converter.formatterFrom = new SimpleDateFormat(pattern);
		
		return converter;
	}
	
	public DateConverter to(String pattern){
		formatterTo = new SimpleDateFormat(pattern);
		return this;
	}
	
	public String convert(String date) {
		if(formatterTo == null || formatterFrom == null)
			throw new RuntimeException("DateFormatter is not ready to format!");
		
		try {
			return formatterTo.format(formatterFrom.parse(date));
		} catch (ParseException e) {
			throw new RuntimeException(e.getCause());
		}
	}
}