
Java_4
Authored by Александр Митясов
Professional Development
Professional Development
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6 questions
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1.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Как называется класс, способный создавать изменяемые потокобезопасные строки?
String
StringBuilder
StringBuffer
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Что будет выведено в результате работа фрагмента программы?
String str = "file index.htm is in c:\Documents";
Pattern p = Pattern.compile("[(\w+\.\w{2,4})]");
Matcher m = p.matches(str);
while(m.find()) { System.out.println(m.group()) }
index.htm
c:\Documents
true
false
3.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
PrintStream - это реализация
InputStream
OutputStream
Writer
Reader
4.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Для работы датами в Java 8 ввели класс
DateTime
Date
Calendar
LocalDate
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Какое исключение будет выброшено?
try {...} catch (SQLException e) {
ServletException se = new ServletException("database error");
se.initCause(e);
throw se; }
SQLException
ServletException
ни одно из вышеуказанных
оба вышеуказанные
6.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Как называется класс коллекции Java, который хранит набор ключ-значение в хеш таблице?
ArrayList<>
HashSet<>
TreeSet<>
HashMap<>
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