Java.util.Objects Class
Java Objects Class
Java.util package provides a Objects class which consists of static utility methods for operating on objects. These utilities include null-safe or null-tolerant methods for computing the hash code of an object, returning a string for an object, and comparing two objects.
Class declaration
The declaration of java.util.Objects class is:
public final class Objects extends Object
Here, E is the type of element maintained by the container.
java.util.Objects Methods
The java.util.Objects class has a number of methods which are listed below:
Member Methods
| S.N | Methods & Description |
|---|---|
| 1. |
static boolean deepEquals(Object a, Object b) Returns true if the arguments are deeply equal to each other and false otherwise. |
| 2. |
static boolean equals(Object a, Object b) Returns true if the arguments are equal to each other and false otherwise. |
| 3. |
static int hash(Object... values) Generates a hash code for a sequence of input values. |
| 4. |
static int hashCode(Object obj) Returns the hash code of a non-null argument and 0 for a null argument. |
| 5. |
static boolean isNull(Object obj) Returns true if the provided reference is null otherwise returns false. |
| 6. |
static boolean nonNull(Object obj) Returns true if the provided reference is non-null otherwise returns false. |
| 7. |
static String toString(Object o) Returns the result of calling toString for a non-null argument and "null" for a null argument. |
| 8. |
static String toString(Object o, String nullDefault) Returns the result of calling toString on the first argument if the first argument is not null and returns the second argument otherwise. |
Methods inherited
This class inherits the methods of following class:
- java.lang.Object
