Package java.lang

Class Object


  • public class Object
    Class Object is the root of the Java Card platform class hierarchy. Every class has Object as a superclass. All objects, including arrays, implement the methods of this class.

    This Java Card platform class's functionality is a strict subset of the definition in the JavaTM Platform Standard Edition (Java SETM) API Specification.

    • Constructor Detail

      • Object

        public Object()
    • Method Detail

      • equals

        public boolean equals​(Object obj)
        Compares two Objects for equality.

        The equals method implements an equivalence relation:

        • It is reflexive: for any reference value x, x.equals(x) should return true.
        • It is symmetric: for any reference values x and y, x.equals(y) should return true if and only if y.equals(x) returns true.
        • It is transitive: for any reference values x, y, and z, if x.equals(y) returns true and y.equals(z) returns true, then x.equals(z) should return true.
        • It is consistent: for any reference values x and y, multiple invocations of x.equals(y) consistently return true or consistently return false.
        • For any reference value x, x.equals(null) should return false.

        The equals method for class Object implements the most discriminating possible equivalence relation on objects; that is, for any reference values x and y, this method returns true if and only if x and y refer to the same object (x==y has the value true).

        Parameters:
        obj - the reference object with which to compare.
        Returns:
        true if this object is the same as the obj argument; false otherwise.