There are two types of exceptions:
- Checked exceptions: When a service method throws this exception, all the consumer methods should either handle or throw the exception
- Unchecked exceptions: The consumer method is not required to handle or throw the exception thrown by the service method
RuntimeException and all its subclasses are unchecked exceptions. All other exceptions are checked exceptions.
Checked exceptions can make your code cumbersome to read. Take a look at the following example:
PreparedStatement st = null;
try {
st = conn.prepareStatement(INSERT_TODO_QUERY);
st.setString(1, bean.getDescription());
st.setBoolean(2, bean.isDone());
st.execute();
} catch (SQLException e) {
logger.error("Failed : " + INSERT_TODO_QUERY, e);
} finally {
if (st != null) {
try...
