public static void main ( String [ ] args ) {
  Node root = getNode ( 1 ) ;
  root . left = getNode ( 2 ) ;
  root . right = getNode ( 3 ) ;
  root . left . left = getNode ( 4 ) ;
  root . left . right = getNode ( 5 ) ;
  if ( isFullBinaryTree ( root ) ) System . out . println ( "Yes" ) ;
  else System . out . println ( "No" ) ;
}

public static void main ( String [ ] args ) { Node root = getNode ( 1 ) ; root . left = getNode ( 2 ) ; root . right = getNode ( 3 ) ; root . left . left = getNode ( 4 ) ; root . left . right = getNode ( 5 ) ; if ( isFullBinaryTree ( root ) ) System . out . println ( " Yes " ) ; else System . out . println ( " No " ) ; }
(method_declaration (modifiers) type: (void_type) name: (identifier) parameters: (formal_parameters (formal_parameter type: (array_type element: (type_identifier) dimensions: (dimensions)) name: (identifier))) body: (block (local_variable_declaration type: (type_identifier) declarator: (variable_declarator name: (identifier) value: (method_invocation name: (identifier) arguments: (argument_list (decimal_integer_literal))))) (expression_statement (assignment_expression left: (field_access object: (identifier) field: (identifier)) right: (method_invocation name: (identifier) arguments: (argument_list (decimal_integer_literal))))) (expression_statement (assignment_expression left: (field_access object: (identifier) field: (identifier)) right: (method_invocation name: (identifier) arguments: (argument_list (decimal_integer_literal))))) (expression_statement (assignment_expression left: (field_access object: (field_access object: (identifier) field: (identifier)) field: (identifier)) right: (method_invocation name: (identifier) arguments: (argument_list (decimal_integer_literal))))) (expression_statement (assignment_expression left: (field_access object: (field_access object: (identifier) field: (identifier)) field: (identifier)) right: (method_invocation name: (identifier) arguments: (argument_list (decimal_integer_literal))))) (if_statement condition: (parenthesized_expression (method_invocation name: (identifier) arguments: (argument_list (identifier)))) consequence: (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (string_literal)))) alternative: (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (string_literal)))))))