How to get the list of all databases using JDBC?

You can get the list of databases in MySQL using the SHOW DATABASES query.

show databases;

Following JDBC program retrieves the list of databases by executing the show databases query.

Example

import java.sql.Connection; import java.sql.DriverManager; import java.sql.ResultSet; import java.sql.Statement; public class ShowDatabasesExample {    public static void main(String args[]) throws Exception {       //Registering the Driver       DriverManager.registerDriver(new com.mysql.jdbc.Driver());       //Getting the connection       String mysqlUrl = "jdbc:mysql://localhost/mydatabase";       Connection con = DriverManager.getConnection(mysqlUrl, "root", "password");       System.out.println("Connection established......");       //Creating a Statement object       Statement stmt = con.createStatement();       //Retrieving the data       ResultSet rs = stmt.executeQuery("Show Databases");       System.out.println("List of databases: ");       while(rs.next()) {          System.out.print(rs.getString(1));          System.out.println();       }    } }

Output

Connection established...... List of databases: information_schema base details errors logging mydatabase mydb mysql performance_schema sample_database sampledb students sys testdb world

Or, You can use the getCatalogs() method of the DatabaseMetaData interface.

Example

import java.sql.Connection; import java.sql.DatabaseMetaData; import java.sql.DriverManager; import java.sql.ResultSet; public class ListOfAllDatabases {    public static void main(String args[]) throws Exception {       //Registering the Driver       DriverManager.registerDriver(new com.mysql.jdbc.Driver());       //Getting the connection       String mysqlUrl = "jdbc:mysql://localhost/mydatabase";       Connection con = DriverManager.getConnection(mysqlUrl, "root", "password");       System.out.println("Connection established......");       //Retrieving the meta data object       DatabaseMetaData metaData = con.getMetaData();       //Retrieving the list of database names       ResultSet tables = metaData.getCatalogs();       while (tables.next()) {          System.out.println(tables.getString("TABLE_CAT"));       }    } }

Output

Connection established...... List of databases: information_schema base details errors logging mydatabase mydb mysql performance_schema sample_database sampledb students sys testdb world