static int swapNibbles ( int x ) {
  return ( ( x & 0x0F ) << 4 | ( x & 0xF0 ) >> 4 ) ;
}

static int swapNibbles ( int x ) { return ( ( x & 0x0F ) << 4 | ( x & 0xF0 ) >> 4 ) ; }
(method_declaration (modifiers) type: (integral_type) name: (identifier) parameters: (formal_parameters (formal_parameter type: (integral_type) name: (identifier))) body: (block (return_statement (parenthesized_expression (binary_expression left: (binary_expression left: (parenthesized_expression (binary_expression left: (identifier) right: (hex_integer_literal))) right: (decimal_integer_literal)) right: (binary_expression left: (parenthesized_expression (binary_expression left: (identifier) right: (hex_integer_literal))) right: (decimal_integer_literal)))))))