question: public boolean matchWithRegEx ( String aRegEx ) { if ( TextUtils . isEmpty ( aRegEx ) ) { return false ; } boolean matched = false ; if ( ! TextUtils . isEmpty ( mDisplayName ) ) { matched = mDisplayName . matches ( aRegEx ) ; } if ( ! matched ) { for ( String email : mEmails ) { matched |= email . matches ( aRegEx ) ; } } return matched ; }
target:  test if some fields match with the reg ex.