Java tutorial
import java.sql.Connection; import java.sql.DatabaseMetaData; import java.sql.DriverManager; import java.sql.ResultSet; import java.sql.Statement; public class Main { public static void main(String[] args) throws Exception { Connection conn = getHSQLConnection(); System.out.println("Got Connection."); Statement st = conn.createStatement(); st.executeUpdate("create table survey (id int,name varchar, PRIMARY KEY (id) );"); st.executeUpdate("insert into survey (id,name ) values (1,'nameValue')"); DatabaseMetaData meta = conn.getMetaData(); ResultSet rs = meta.getPrimaryKeys(null, null, "survey"); java.util.List list = new java.util.ArrayList(); while (rs.next()) { String columnName = rs.getString("COLUMN_NAME"); System.out.println("getPrimaryKeys(): columnName=" + columnName); } st.close(); conn.close(); } private static Connection getHSQLConnection() throws Exception { Class.forName("org.hsqldb.jdbcDriver"); System.out.println("Driver Loaded."); String url = "jdbc:hsqldb:data/tutorial"; return DriverManager.getConnection(url, "sa", ""); } public static Connection getMySqlConnection() throws Exception { String driver = "org.gjt.mm.mysql.Driver"; String url = "jdbc:mysql://localhost/octopus"; String username = "root"; String password = "root"; Class.forName(driver); // load MySQL driver Connection conn = DriverManager.getConnection(url, username, password); return conn; } public static Connection getOracleConnection() throws Exception { String driver = "oracle.jdbc.driver.OracleDriver"; String url = "jdbc:oracle:thin:@localhost:1521:caspian"; String username = "mp"; String password = "mp2"; Class.forName(driver); // load Oracle driver Connection conn = DriverManager.getConnection(url, username, password); return conn; } }