Listing All Databases - getCatalogs()

This section describes how to get a list of all databases on the SQL Server through the DatabaseMetaData object.

If you want to list all databases on the SQL Server, you can use the DatabaseMetaData method: getCatalogs(). It returns all databases in a ResultSet object with one field, TABLE_CAT, containing the database name.

Note that a JDBC catalog is mapped to SQL Server database.

The tutorial Java program below shows you how to list all databases on the SQL Server:

/* ListDatabases.java
 * Copyright (c) HerongYang.com. All Rights Reserved.
 */
import java.sql.*;
public class ListDatabases {
  public static void main(String [] args) {
    Connection con = null;
    try {

      con = DriverManager.getConnection(
          "jdbc:sqlserver://localhost\\SQLEXPRESS;"
        + "user=herong;password=T0pSecret;"
        + "database=AdventureWorks2019");

      DatabaseMetaData meta = con.getMetaData();
      ResultSet res = meta.getCatalogs();
      System.out.println("List of databases: ");
      while (res.next()) {
         System.out.println("   "
           +res.getString("TABLE_CAT"));
      }
      res.close();

      con.close();
    } catch (Exception e) {
      e.printStackTrace();
    }
  }
}

Here is the output of the program:

herong> java -cp .;mssql-jdbc-9.4.1.jre16.jar ListDatabases.java

List of databases:
   AdventureWorks2019
   master
   model
   msdb
   tempdb

Table of Contents

 About This Book

 JDBC (Java Database Connectivity) Introduction

 JDK (Java SE) Installation

 Microsoft SQL Server Express Edition

 Microsoft JDBC Driver for SQL Server

 Microsoft JDBC Driver - Query Statements and Result Sets

Microsoft JDBC Driver - DatabaseMetaData Object

 Commonly Used DatabaseMetaData Methods

 Getting Database Server and Driver Info

Listing All Databases - getCatalogs()

 Listing All Schemas - getSchemas()

 Listing All Tables - getTables()

 Listing All Culumns - getColumns()

 Listing All Stored Procedures - getProcedures()

 Microsoft JDBC Driver - DDL Statements

 Microsoft JDBC Driver - DML Statements

 SQL Server - PreparedStatement

 SQL Server CLOB (Character Large Object) - TEXT

 SQL Server BLOB (Binary Large Object) - BLOB

 JDBC-ODBC Bridge Driver - sun.jdbc.odbc.JdbcOdbcDriver

 JDBC-ODBC Bridge Driver - Flat Text Files

 JDBC-ODBC Bridge Driver - MS Access

 JDBC-ODBC Bridge Driver - MS SQL Server

 Archived Tutorials

 References

 Full Version in PDF/EPUB