https://github.com/spring-projects/spring-boot/tree/master/spring-boot-samples

https://mvnrepository.com/artifact/org.springframework.boot

https://start.spring.io/

Spring Boot is a brand new framework, designed to simplify the bootstrapping and development of a new Spring application. The framework takes an opinionated approach to configuration, freeing developers from the need to define boilerplate configuration

private static void order(List persons) { Collections.sort(persons, new Comparator() { public int compare(Object o1, Object o2) { String x1 = ((Person) o1).getName(); String x2 = ((Person) o2).getName(); int sComp = x1.compareTo(x2); if (sComp != 0) { return sComp; } Integer x1 = ((Person) o1).getAge(); Integer x2 = ((Person) o2).getAge(); return x1.compareTo(x2); } }); }