Method show

patterns/SingletonPattern.java:24–27

(Resource<T> r)

public class SingletonPattern {
  public static <T> void show(Resource<T> r) {
    T val = r.get();
    System.out.println(val);
  }
  public static <T> void put(Resource<T> r, T val) {
    r.set(val);
  }