![]() If not available install it before proceeding with JDBC driver installation. PostgreSQL and psql should be installed on your machine that can be checked by typing the command psql -V that should give output as follows –.If not present, you should firstly install java. It can be checked by typing the command java -version in your command which will provide you with the output specifying the version of java available in your system like the following. While creating a database-based java application, it is required to have a few things installed in your system which is as follows – Note that JDBC drivers and URLs are different for different relational databases. In this article, we will learn how we can connect our java application with our PostgreSQL database with the help of the JDBC driver. The database can be any database like MySQL, PostgreSQL, etc. While creating a database-based application and using any of the databases in your java application, you will need to follow certain steps to use the JDBC (Java Database Connectivity) which is an API i.e Application Programming Interface that helps us to communicate between our java application and our database. Now, you can see the shell changing from postgres=# to educba=# that tells we are now connected to the educba database. Now to switch to the educba database and connect to the same we can type the command You can exit from the output screen using \q and if you want to check all the available databases then type \l command which results in all databases present in our database server as follows – Now, you can fire any psql command you wish to \du is the command to list out the user. In the above case, postgres=# shows that now we are connected to the Postgres database. When you finally connect to a particular database, you will see the name of the database on the shell of the terminal. Where databaseName is the name of the database you wish to connect to and nameOfUser is the user using which you want to connect to the database.įor example, if you want to connect to the database named Postgres and have the username as Postgres then the connecting statement becomes – The next step is to connect to a psql prompt that has the following syntax –.After that enter the password of the superuser. Here, I am logging in as Postgres using sudo. The first step is to open the terminal and the login to Postgres using a command prompt with a user using the following command –.Hadoop, Data Science, Statistics
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