What is the difference between Object and Objects in java

Question

What's the difference between them and how can I use Objects?

Objects                 |        Object
java.util               |        java.lang
Class Objects           |        Class Object

java.util.Objects       |        java.lang.Object

No need to use 'Objects', if it is necessary, the class 'Object' will use them — Kugelblitz
– Kugelblitz, Commented May 11, 2015 at 7:32
... and you can look at its JavaDoc to see what these utility methods are: docs.oracle.com/javase/7/docs/api/java/util/Objects.html — Thilo
– Thilo, Commented May 11, 2015 at 7:33
@assylias I see, I did some reading up. Had previously thought you could access these methods through 'Object' aswell — Kugelblitz
– Kugelblitz, Commented May 11, 2015 at 7:55

Benjamin · Accepted Answer · 2015-05-11 07:36:05Z

5

The javadoc can help:

java.lang.Object

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

java.util.Objects

This class 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.

answered May 11, 2015 at 7:36

Benjamin

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3 Comments

Pieter De Bie Over a year ago

I wonder what the difference between null-safe and null-tolerant is.

Sagar Rout Over a year ago

@PieterDeBie It means if reference is not pointing to anyone or it is null, it will run and it will not show null pointer exception

Pieter De Bie Over a year ago

So, no difference between them?

AlexR · Accepted Answer · 2015-05-11 07:35:05Z

3

Object is a implicit base class for all classes in java. Objects is a utility class introduced in java 7 that contains several very convenient static utility methods.

answered May 11, 2015 at 7:35

AlexR

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1 Comment

AlexR Over a year ago

Objects indeed utility. However there is a lot to learn more.

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