attempt_on_correct_error_handling.java

finally {
  try {
    if (resultSet != null) {
      resultSet.close();
    }
 
  } catch (SQLException ex) {
    logger.error("Error in Database", ex);
  } finally {
    try {
      if (statement != null) {
        statement.close();
      }
 
    } catch (SQLException ex) {
      logger.error("Error in Database", ex);
    } finally {
      try {
       if (conn != null) {
         conn.close();
       }
     } catch (SQLException ex) {
      logger.error("Error in Database", ex);
    }
  }
}

final_rethrow.java

public void call() throws ReflectiveOperationException, IOException {
    try {
      callWithReflection(arg);
    } catch (final Exception e) {
      logger.trace("Exception in reflection", e);
      throw e;
    }
}

generic_array.java

List<Integer>[] matrix = new List[23];

heap_pollution.java

List<integer>[] matrix = new List[23];
List[] nonGenericMatrix = matrix;
// No exception
nonGenericMatrix[0] = Arrays.asList("String1", "String1");
// java.lang.Integer cannot be cast to java.lang.String
List</integer><integer> vectorList = matrix[0];

integer_array.java

Integer[] vector = new Integer[3];
Object[] vectorObjects = vector;
// java.lang.ArrayStoreException
vectorObjects[0] = "String"

multicatch.java

try {
  callWithReflection(arg);
} catch (final ReflectiveOperationException | IOException e) {
  throw new RuntimeException(e);
}

read_unsave.java

public void readData() {
  Connection conn = null;
  Statement statement = null;
  ResultSet resultSet = null;
  try {
    conn = DriverManager.getConnection(CONNECTION_STRING);
    statement = conn.createStatement();
    resultSet = statement.executeQuery("SELECT patient, medication_day, medication_desc FROM medications");
 
    while (resultSet.next()) {
      String patient = resultSet.getString("patient");
      LocalDate medication_day = LocalDate.fromDateFields(resultSet.getDate("medication_day"));
      String medication_desc = resultSet.getString("medication_desc");
 
     System.out.println(String.format("'%s','%s','%s'", patient, medication_day, medication_desc));
    }
 
  } catch (SQLException ex) {
    logger.error("Error in Database", ex);
  } finally {
    try {
      resultSet.close();
      statement.close();
      conn.close();
    } catch (SQLException ex) {
      logger.error("Error in Database", ex);
    }
  }
}

reflection_in_java6.java

try {
  callWithReflection(arg);
} catch (NoSuchMethodException e) {
  throw new RuntimeException(e);
} catch (IllegalAccessException e) {
  throw new RuntimeException(e);
} catch (InvocationTargetException e) {
  throw new RuntimeException(e);
} catch (ClassNotFoundException e) {
  throw new RuntimeException(e);
} catch (IOException e) {
  throw new RuntimeException(e);
}

relective_operation_exception.java

try {
  callWithReflection(arg);
} catch (ReflectiveOperationException e) {
  throw new RuntimeException(e);
} catch (IOException e) {
  throw new RuntimeException(e);
}

try_with_resources.java

try (Connection conn = DriverManager.getConnection(CONNECTION_STRING);
        Statement statement = conn.createStatement();
        ResultSet resultSet = statement.executeQuery("SELECT patient, medication_day, medication_desc FROM medications");
        BufferedWriter output = Files.newBufferedWriter(target, Charset.forName("utf-8"))) {
 
  while (resultSet.next()) {
    String patient = resultSet.getString("patient");
    LocalDate medication_day = LocalDate.fromDateFields(resultSet.getDate("medication_day"));
    String medication_desc = resultSet.getString("medication_desc");
 
    output.write(String.format("'%s','%s','%s'\n", patient, medication_day, medication_desc));
 
  }
 
} catch (SQLException ex) {
  logger.error("Error in Database", ex);
} catch (IOException ex) {
  logger.error("Error in File Writing", ex);
}