Eliminados avisos sonar --> Return of boolean expressions should not be
wrapped into an if-then-else statement; Useless parentheses around
expressions should be removed to prevent any misunderstanding; Loggers
should be "private static final" and should share a naming convention;
Left curly braces should be located at the end of lines of code;
Constants should be declared "final static" rather than merely "final";
Right curly brace and next "else", "catch" and "finally" keywords should
be located on the same line