How to select records from database in java | how to retrieve data from database in java | JDBC

In this How to select records from database in java we will learn how to retrieve data from database in java using jdbc with mysql.
The tool and technologies used in this tutorial are:
1 Java
2 Netbeans
3 MySQL
4 Jdbc
5 SQL
6 JDK

JDBC - Select Records Example
how to select/ fetch records from a table using JDBC application. Before executing the following example, make sure you have the following in place −

To execute the following example you can replace the username and password with your actual user name and password.

Your MySQL or whatever database you are using is up and running.

Required Steps

The following steps are required to create a new Database using JDBC application −

Import the packages − Requires that you include the packages containing the JDBC classes needed for database programming. Most often, using import java.sql.* will suffice.

Open a connection − Requires using the DriverManager.getConnection() method to create a Connection object, which represents a physical connection with a database server.

Execute a query − Requires using an object of type Statement for building and submitting an SQL statement to select (i.e. fetch ) records from a table.

Extract Data − Once SQL query is executed, you can fetch records from the table.

JDBC Select All Records Example
JDBC Select All Records Example

In this tutorial we will learn how select all records from the table use mysql JDBC driver.
In this tutorial we will learn how select all records from the table use mysql JDBC driver.
JDBC Select All Records Example

In this tutorial we will learn how select all records from the table use mysql JDBC driver. This tutorial example for select all records from table if exist and defined how the records fetch and store.

This example applied mysql query "SELECT * FROM user" and applied the given step by step that describe in "SelectAllRecords.java" class and given steps as:

1.Import the packages
2.Register the JDBC driver
3.Open a connection
4.Execute a query
5.Extract Data

First we create connection to the database server, again create query and execute , store the result in ResultSet object and Extract data. While loop extract data from ResultSet rs one by one row and print also.

Java JDBC: A SQL SELECT query example
how to select records from a database table using JDBC Statement interface. Statement interface provides executeQuery() method which executes the SQL query in this Statement object and returns the ResultSet object generated by the query.

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Java JDBC: A SQL SELECT query example
By Alvin Alexander. Last updated: July 8, 2020
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Java JDBC FAQ: Can you share an example of a SQL SELECT query using the standard JDBC syntax?

In my JDBC connection article I showed how to connect your Java applications to standard SQL databases like MySQL, SQL Server, Oracle, SQLite, and others using JDBC. In those examples I showed how to connect to two different databases so you could see how little the code changes when you switch from one database to another.

In this SELECT query tutorial I'll take JDBC to the next step, showing how to create and execute a SQL SELECT statement in your Java code.
JDBC SELECT query: A sample database

Before looking at the SQL queries, let's take a quick look at our sample database.

In all of these examples I’ll access a database named "Demo", and in these SELECT query examples I’ll access a database table named "Customers" that's contained in the Demo database.
How to Select Data from database in java JDBC

How to Select Data from database in java JDBC | JDBC | Java and MySQL
How to Select Data from database in java JDBC | JDBC | Java and MySQL
How to Select Data from database in java JDBC | JDBC | Java and MySQL

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