/* package whatever; // don't place package name! */
 
import java.util.*;
import java.lang.*;
import java.io.*;
import java.util.function.*;
 
interface Searchable {
    public static <T extends Enum,N extends Comparable> Optional<T> getByCode(Supplier<T[]> v,Function<T,N> s,N code) 
    {
        return Arrays.stream(v.get())
                .filter(data -> s.apply(data).equals(code))
                .findFirst();
    }
}
 
enum TestEnum implements Searchable { 
  A(1),B(2),C(3);
  private final Integer id;
  private TestEnum (int id) { this.id = id;}
 
  public Integer getId() { return id; }
 
  public static Optional<TestEnum> getById(Integer id){
    return Searchable.getByCode(TestEnum::values,TestEnum::getId,id);
  }
}
 
/* Name of the class has to be "Main" only if the class is public. */
class Ideone
{
	public static void main (String[] args) throws java.lang.Exception
	{
      TestEnum.getById(2).ifPresent(System.out::println);
	}
}

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