static boolean checkPrime ( String number ) {
  if ( number . length ( ) == 0 ) return true ;
  int num = Integer . parseInt ( number ) ;
  for ( int i = 2 ;
  i * i <= num ;
  i ++ ) if ( ( num % i ) == 0 ) return false ;
  return true ;
}

static boolean checkPrime ( String number ) { if ( number . length ( ) == 0 ) return true ; int num = Integer . parseInt ( number ) ; for ( int i = 2 ; i * i <= num ; i ++ ) if ( ( num % i ) == 0 ) return false ; return true ; }
(method_declaration (modifiers) type: (boolean_type) name: (identifier) parameters: (formal_parameters (formal_parameter type: (type_identifier) name: (identifier))) body: (block (if_statement condition: (parenthesized_expression (binary_expression left: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)) right: (decimal_integer_literal))) consequence: (return_statement (true))) (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (identifier))))) (for_statement init: (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (decimal_integer_literal))) condition: (binary_expression left: (binary_expression left: (identifier) right: (identifier)) right: (identifier)) update: (update_expression (identifier)) body: (if_statement condition: (parenthesized_expression (binary_expression left: (parenthesized_expression (binary_expression left: (identifier) right: (identifier))) right: (decimal_integer_literal))) consequence: (return_statement (false)))) (return_statement (true))))