objects.nonnull in java 8

Unlike Objects. hashCode(), which takes only a single object, Objects. hash() can take one or more objects and provides a hashcode for them . Under the hood, the hash() method works by putting the supplied objects into an array and calling Arrays.

public static int hash(Object… values) Generates a hash code for a sequence of input values . The hash code is generated as if all the input values were placed into an array, and that array were hashed by calling Arrays. hashCode(Object[]) .

A Java object is a member (also called an instance) of a Java class . Each object has an identity, a behavior and a state. The state of an object is stored in fields (variables), while methods (functions) display the object’s behavior. Objects are created at runtime from templates, which are also known as classes.