private static char translate ( char ch ) {
  if ( 'a' <= ch & ch <= 'z' ) return TRANSLATER . charAt ( ch - 'a' ) ;
  else return ch ;
}

private static char translate ( char ch ) { if ( ' a ' <= ch & ch <= ' z ' ) return TRANSLATER . charAt ( ch - ' a ' ) ; else return ch ; }
(method_declaration (modifiers) type: (integral_type) name: (identifier) parameters: (formal_parameters (formal_parameter type: (integral_type) name: (identifier))) body: (block (if_statement condition: (parenthesized_expression (binary_expression left: (binary_expression left: (character_literal) right: (identifier)) right: (binary_expression left: (identifier) right: (character_literal)))) consequence: (return_statement (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (binary_expression left: (identifier) right: (character_literal))))) alternative: (return_statement (identifier)))))