OnJava8-Examples/interfaces/RandVals.java

// interfaces/RandVals.java
// Initializing interface fields with
// non-constant initializers.
import java.util.*;

public interface RandVals {
  Random RAND = new Random(47);
  int RANDOM_INT = RAND.nextInt(10);
  long RANDOM_LONG = RAND.nextLong() * 10;
  float RANDOM_FLOAT = RAND.nextLong() * 10;
  double RANDOM_DOUBLE = RAND.nextDouble() * 10;
}