Source:
<code>public void init() throws DBException { if (initialized) { System.err.println("Client connection already initialized."); return; } props = getProperties(); String urls = props.getProperty(CONNECTION_URL, DEFAULT_PROP); String user = props.getProperty(CONNECTION_USER, DEFAULT_PROP); String passwd = props.getProperty(CONNECTION_PASSWD, DEFAULT_PROP); String driver = props.getProperty(DRIVER_CLASS); this.jdbcFetchSize = getIntProperty(props, JDBC_FETCH_SIZE); this.batchSize = getIntProperty(props, DB_BATCH_SIZE); this.autoCommit = getBoolProperty(props, JDBC_AUTO_COMMIT, true); this.batchUpdates = getBoolProperty(props, JDBC_BATCH_UPDATES, false); try { if (driver.contains("sqlserver")) { sqlserver = true; } <START> if (driver != null) { <END> Class.forName(driver); } int shardCount = 0; conns = new ArrayList<Connection>(3); final String[] urlArr = urls.split(";"); for (String url : urlArr) { System.out.println("Adding shard node URL: " + url); Connection conn = DriverManager.getConnection(url, user, passwd); conn.setAutoCommit(autoCommit); shardCount++; conns.add(conn); } System.out.println("Using shards: " + shardCount + ", batchSize:" + batchSize + ", fetchSize: " + jdbcFetchSize); cachedStatements = new ConcurrentHashMap<StatementType, PreparedStatement>(); this.dbFlavor = DBFlavor.fromJdbcUrl(urlArr[0]); } catch (ClassNotFoundException e) { System.err.println("Error in initializing the JDBS driver: " + e); throw new DBException(e); } catch (SQLException e) { System.err.println("Error in database operation: " + e); throw new DBException(e); } catch (NumberFormatException e) { System.err.println("Invalid value for fieldcount property. " + e); throw new DBException(e); } initialized = true; }</code><technical_language>I need move this null check</technical_language>

Target:
public void init() throws DBException { if (initialized) { System.err.println("Client connection already initialized."); return; } props = getProperties(); String urls = props.getProperty(CONNECTION_URL, DEFAULT_PROP); String user = props.getProperty(CONNECTION_USER, DEFAULT_PROP); String passwd = props.getProperty(CONNECTION_PASSWD, DEFAULT_PROP); String driver = props.getProperty(DRIVER_CLASS); this.jdbcFetchSize = getIntProperty(props, JDBC_FETCH_SIZE); this.batchSize = getIntProperty(props, DB_BATCH_SIZE); this.autoCommit = getBoolProperty(props, JDBC_AUTO_COMMIT, true); this.batchUpdates = getBoolProperty(props, JDBC_BATCH_UPDATES, false); try { if (driver != null) { if (driver.contains("sqlserver")) { sqlserver = true; } Class.forName(driver); } int shardCount = 0; conns = new ArrayList<Connection>(3); final String[] urlArr = urls.split(";"); for (String url : urlArr) { System.out.println("Adding shard node URL: " + url); Connection conn = DriverManager.getConnection(url, user, passwd); conn.setAutoCommit(autoCommit); shardCount++; conns.add(conn); } System.out.println("Using shards: " + shardCount + ", batchSize:" + batchSize + ", fetchSize: " + jdbcFetchSize); cachedStatements = new ConcurrentHashMap<StatementType, PreparedStatement>(); this.dbFlavor = DBFlavor.fromJdbcUrl(urlArr[0]); } catch (ClassNotFoundException e) { System.err.println("Error in initializing the JDBS driver: " + e); throw new DBException(e); } catch (SQLException e) { System.err.println("Error in database operation: " + e); throw new DBException(e); } catch (NumberFormatException e) { System.err.println("Invalid value for fieldcount property. " + e); throw new DBException(e); } initialized = true; }