In this article we will continue to explain the remaining 10 methods of Object class in java.lang package. equals(Object o) Prototype of this method is public boolean equals(Object o) We use Equals() method in order to check the equality of any 2 objects. Method equals() is meant for reference comparison or address comparison, and when …
We have already discussed about the toString() method so now we will explain the remaining 10 methods of Object class in java.lang package. 2) hashCode(): Prototype of this method is public native int hashCode() In java, JVM assigns one unique id to every object through which we can represent it in the memory. This unique …
Hashcode() and CLone() – Methods of Object Class in Java Read More »
After java.util package, java.lang package is another java package that is used most by the programmers. This package is by default imported in the java program, therefore it is not required to import it explicitly. Some of the most commonly used class in this package are: Object String StringBuilder StringBuffer Wrapper Classes Now discussing these …
In this tutorial we will learn about how to limit documents, skip some documents and using sorting techniques in mongodb. Retrieve the document from the database Note: We are using testDB database, and from the previous tutorial we are using collection as testCollection 1) Open a new command Prompt 2) Enter “mongod“, and press ENTER (it …
In this tutorial we will talk about indexing. In a textbook you all remember about the index page that contains the metadata, which give details about the chapter number, chapter name and the corresponding page number. Suppose you want to go to chapter number 4, so you just open the index, search for the chapter …