public static int f ( int a ) {
  if ( a % 2 == 0 ) {
    return a / 2 ;
  }
  else {
    return 3 * a + 1 ;
  }
}

public static int f ( int a ) { if ( a % 2 == 0 ) { return a / 2 ; } else { return 3 * a + 1 ; } }
(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: (identifier) right: (decimal_integer_literal)) right: (decimal_integer_literal))) consequence: (block (return_statement (binary_expression left: (identifier) right: (decimal_integer_literal)))) alternative: (block (return_statement (binary_expression left: (binary_expression left: (decimal_integer_literal) right: (identifier)) right: (decimal_integer_literal)))))))