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 …
The looping statements can be used to create patterns by using the concept of a nested loop in python. Nested Loop When we place another loop within a loop then this is known as a nested loop. There can be multiple loops placed inside one another as a nested loop. Example: >>>for i in range(3): …