Program: 127337
Project: 127337
Buggy source:
private String checkDBVersion(){
  String msg=null;
  EDatabaseVersion4Drivers version=EDatabaseVersion4Drivers.indexOfByVersionDisplay(dbVersionCombo.getText());
  DatabaseConnection connection=getConnection();
  List<EDatabaseVersion4Drivers> dbTypeList=EDatabaseVersion4Drivers.indexOfByDbType(connection.getDatabaseType());
  if (version != null && dbTypeList.size() > 1) {
    EDatabaseTypeName dbType=EDatabaseTypeName.getTypeFromDbType(getConnection().getDatabaseType());
    if (dbType == null || dbType.equals(EDatabaseTypeName.ACCESS) || dbType.equals(EDatabaseTypeName.PSQL) || dbType.equals(EDatabaseTypeName.PLUSPSQL)) {
      return null;
    }
    if (connection.getDriverClass() == null && dbType != EDatabaseTypeName.GENERAL_JDBC) {
      String driverClass=ExtractMetaDataUtils.getDriverClassByDbType(connection.getDatabaseType());
      connection.setDriverClass(driverClass);
    }
    java.sql.Connection sqlConn=MetadataConnectionUtils.checkConnection(connection).getObject();
    if (sqlConn != null) {
      try {
        DatabaseMetaData dm=ExtractMetaDataUtils.getDatabaseMetaData(sqlConn,connection);
        int versionNum=dm.getDatabaseMajorVersion();
        String[] strArray=version.getVersionValue().split("String_Node_Str");
        if (strArray.length > 1 && strArray[1].startsWith(Integer.toString(versionNum))) {
          msg=null;
        }
 else {
          msg="String_Node_Str" + strArray[0] + "String_Node_Str"+ versionNum+ "String_Node_Str";
        }
      }
 catch (      SQLException exp) {
        ExceptionHandler.process(exp);
      }
 finally {
        ConnectionUtils.closeConnection(sqlConn);
      }
    }
  }
  return msg;
}

Fixed version (ground truth):
private String checkDBVersion(){
  String msg=null;
  EDatabaseVersion4Drivers version=EDatabaseVersion4Drivers.indexOfByVersionDisplay(dbVersionCombo.getText());
  ExtractMetaDataUtils extractMeta=ExtractMetaDataUtils.getInstance();
  DatabaseConnection connection=getConnection();
  List<EDatabaseVersion4Drivers> dbTypeList=EDatabaseVersion4Drivers.indexOfByDbType(connection.getDatabaseType());
  if (version != null && dbTypeList.size() > 1) {
    EDatabaseTypeName dbType=EDatabaseTypeName.getTypeFromDbType(getConnection().getDatabaseType());
    if (dbType == null || dbType.equals(EDatabaseTypeName.ACCESS) || dbType.equals(EDatabaseTypeName.PSQL) || dbType.equals(EDatabaseTypeName.PLUSPSQL)) {
      return null;
    }
    if (connection.getDriverClass() == null && dbType != EDatabaseTypeName.GENERAL_JDBC) {
      String driverClass=extractMeta.getDriverClassByDbType(connection.getDatabaseType());
      connection.setDriverClass(driverClass);
    }
    java.sql.Connection sqlConn=MetadataConnectionUtils.checkConnection(connection).getObject();
    if (sqlConn != null) {
      try {
        DatabaseMetaData dm=extractMeta.getDatabaseMetaData(sqlConn,connection);
        int versionNum=dm.getDatabaseMajorVersion();
        String[] strArray=version.getVersionValue().split("String_Node_Str");
        if (strArray.length > 1 && strArray[1].startsWith(Integer.toString(versionNum))) {
          msg=null;
        }
 else {
          msg="String_Node_Str" + strArray[0] + "String_Node_Str"+ versionNum+ "String_Node_Str";
        }
      }
 catch (      SQLException exp) {
        ExceptionHandler.process(exp);
      }
 finally {
        ConnectionUtils.closeConnection(sqlConn);
      }
    }
  }
  return msg;
}