![Read JDBC Configurations from Properties File Read JDBC Configurations from Properties File](https://code2care.org/java/read-java-jdbc-connection-details-from-properties-file/images/Read JDBC Configurations from Properties File.jpg)
It is always better to keep the configuration details in the properties file, this helps you choose the Database and user details based on the environment like local/staging/uat/production.
Step 1: Create a local_configuration.properties file
local_configuration.propertiesMYSQL_JDBC_DRIVER_CLASS=com.mysql.cj.jdbc.Driver
MYSQL_DB_URL=jdbc:mysql://localhost:3306/my_uat
MYSQL_DB_USER=root
MYSQL_DB_USER_PASSWORD=root123
Step 2: Reading the Properties File
InputStream inputStream = new FileInputStream("local_configuration.properties");
Properties properties = new Properties();
properties.load(inputStream);
String url = properties.getProperty("MYSQL_DB_URL");
String user = properties.getProperty("MYSQL_DB_USER");
String password = properties.getProperty("MYSQL_DB_USER_PASSWORD");
Step 3: Complete JDBC Code
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.Properties;
public class JDBCReadFromPropertiesFile {
public static void main(String[] args) throws SQLException, IOException {
InputStream inputStream = new FileInputStream("local_configuration.properties");
Properties properties = new Properties();
properties.load(inputStream);
String url = properties.getProperty("MYSQL_DB_URL");
String user = properties.getProperty("MYSQL_DB_USER");
String password = properties.getProperty("MYSQL_DB_USER_PASSWORD");
String sql = "Select * from students";
Connection connection = DriverManager.getConnection(url, user, password);
Statement statement = connection.createStatement();
ResultSet resultSet = statement.executeQuery(sql);
while(resultSet.next()) {
System.out.print(resultSet.getInt(1)+"\t");
System.out.print(resultSet.getString(2)+"\t");
System.out.print(resultSet.getDate(3)+"\t");
System.out.println();
}
}
}
Output:
1 Mike 2001-07-22
2 Alex 2002-08-13
3 Sam 2022-01-25
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Author Info:
Rakesh (He/Him) has over 14+ years of experience in Web and Application development. He is the author of insightful How-To articles for Code2care.
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