public static void main ( String [ ] args ) {
  int x = 10 ;
  swap ( x , x ) ;
  System . out . println ( "After swap(&x, &x): x = " + x ) ;
}

public static void main ( String [ ] args ) { int x = 10 ; swap ( x , x ) ; System . out . println ( " After ▁ swap ( & x , ▁ & x ) : ▁ x ▁ = ▁ " + x ) ; }
(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: (integral_type) declarator: (variable_declarator name: (identifier) value: (decimal_integer_literal))) (expression_statement (method_invocation name: (identifier) arguments: (argument_list (identifier) (identifier)))) (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (binary_expression left: (string_literal) right: (identifier)))))))