Java Utililty Methods JDBC Database Metadata

DatabaseMetaData dmd = c.getMetaData();
ResultSet rs = null;
try {
    rs = dmd.getSchemas();
    Map map = new HashMap();
    List l;
    while (rs.next()) {
        String schema = rs.getString(1);
...

String url = metadata.getURL();
int s1 = url.indexOf('?');
if (s1 < 0)
    s1 = url.length();
int s2 = url.indexOf(';');
if (s2 < 0)
    s2 = url.length();
return url.substring(0, Math.min(s1, s2));
...

ResultSet rs = null;
try {
    DatabaseMetaData meta = connection.getMetaData();
    rs = meta.getColumns(null, null, selectedTable, null);
    ArrayList<String> columnNames = new ArrayList<String>();
    while (rs.next()) {
        columnNames.add(rs.getString(4));
    return columnNames;
} finally {
    closeResultSet(rs);
    closeConnection(connection);

Map<String, Map<String, String>> tableMetadatas = new HashMap<String, Map<String, String>>();
DatabaseMetaData metadata = connection.getMetaData();
ResultSet resultSet = metadata.getColumns(null, null, tableName, null);
while (resultSet.next()) {
    Map<String, String> metaDataMap = new HashMap<String, String>();
    String name = resultSet.getString("COLUMN_NAME");
    String type = resultSet.getString("TYPE_NAME");
    int size = resultSet.getInt("COLUMN_SIZE");
...

DatabaseMetaData dbmd = conn.getMetaData();
return getTableNames(conn, dbmd.getUserName());

ResultSet rs = dbMD.getTables(null, null, null, null);
List results = new ArrayList();
while (rs.next()) {
    results.add(rs.getString(TABLE_NAME));
safeClose(rs);
return results;

if (metadata != null && metadata.getDatabaseProductName() != null
        && metadata.getDatabaseProductName().indexOf(IBM_DB2_ZOS_PRODUCT_NAME) > -1) {
    return true;
return false;

return Pattern.matches(".*derby.*", metaData.getDatabaseProductName().toLowerCase());

DatabaseMetaData dmd = con.getMetaData();
ResultSet rs = dmd.getTables(null, schema, "%", null);
try {
    tableName = tableName.toUpperCase();
    while (rs.next()) {
        String tableNameTmp = rs.getString("TABLE_NAME");
        if (tableName.equals(tableNameTmp.toUpperCase())) {
            return true;
...

return isDerbyDatabase(metaData) || isMySQLDatabase(metaData) || isOracleDatabase(metaData);