1z1-809試験無料問題集（209題）「Oracle Java SE 8 Programmer II 認定」

出題：1

Given:
Book.java:
public class Book {
private String read(String bname) { return "Read" + bname }
}
EBook.java:
public class EBook extends Book {
public class String read (String url) { return "View" + url }
}
Test.java:
public class Test {
public static void main (String[] args) {
Book b1 = new Book();
b1.read("Java Programing");
Book b2 = new EBook();
b2.read("http://ebook.com/ebook");
}
}
What is the result?

A. Read Java ProgrammingRead http:/ ebook.com/ebook

B. The Test.java file fails to compile.

C. Read Java ProgrammingView http:/ ebook.com/ebook

D. The EBook.java file fails to compile.

正解：B 解答を投票する

出題：2

Given this code;

Which two are correct after this class is instantiated and tested?

A. If the value of i is set to 8, the value of j could be any integer value.

B. If the value of j is set to 15, the value of i could be any integer value.

C. If the value of i is set to 5, the value of j will be 1.

D. If the value of i is set to 6, the value of j will be 18.

E. If the value of i remains 3, the value of j will remain 9.

F. If the value of j is set to 5, the value of i will be 15.

正解：C,F 解答を投票する

出題：3

Which statement is true about the single abstract method of the java.util.function.Predicate interface?

A. It accepts one argument and returns void.

B. It accepts one argument and always produces a result of the same type as the argument.

C. It accepts one argument and returns boolean.

D. It accepts an argument and produces a result of any data type.

正解：C 解答を投票する

解説: (GoShiken メンバーにのみ表示されます)

出題：4

The data.doc, data.txt and data.xml files are accessible and contain text.
Given the code fragment:
Stream<Path> paths = Stream.of (Paths. get("data.doc"),
Paths. get("data.txt"),
Paths. get("data.xml"));
paths.filter(s-> s.toString().endWith("txt")).forEach(
s -> {
try {
Files.readAllLines(s)
.stream()
.forEach(System.out::println); //line n1
} catch (IOException e) {
System.out.println("Exception");
}
}
);
What is the result?

A. The program prints the content of the three files.

B. A compilation error occurs at line n1.

C. The program prints:Exception<<The content of the data.txt file>>Exception

D. The program prints the content of data.txt file.

正解：D 解答を投票する

出題：5

Given the content:

and given the code fragment:

Which two code fragments, when inserted at line 1 independently, enable the code to print "Wie geht's?"

A. currentlocale = new Locale();currentLocale.setLanguage ("de");currentLocale.setRegion ("DE");

B. currentLocale = new Locale ("de", "DE");

C. currentLocale = Locale.GERMAN;

D. currentLocale = new Locale.Builder ().setLanguage ("de").setRegion ("DE").build();

E. currentLocale = Locale.getInstance(Locale.GERMAN,Locale.GERMANY);

正解：A,D 解答を投票する

出題：6

Given:

What is the result?

A. Bar HelloFoo Hello

B. Baz Hello

C. A compilation error occurs in the Daze class.

D. Bar HelloBaz Hello

正解：D 解答を投票する

出題：7

Given the content of /resourses/Message.properties:
welcome1="Good day!"
and given the code fragment:
Properties prop = new Properties ();
FileInputStream fis = new FileInputStream ("/resources/Message.properties"); prop.load(fis); System.out.println(prop.getProperty("welcome1")); System.out.println(prop.getProperty("welcome2", "Test"));//line n1 System.out.println(prop.getProperty("welcome3")); What is the result?

A. Good day!Testfollowed by an Exception stack trace

B. A compilation error occurs at line n1.

C. Good day!Testnull

D. Good day!followed by an Exception stack trace

正解：C 解答を投票する

出題：8

Given:
Item table
* ID, INTEGER: PK
* DESCRIP, VARCHAR(100)
* PRICE, REAL
* QUANTITY< INTEGER
And given the code fragment:
9. try {
10.Connection conn = DriveManager.getConnection(dbURL, username, password);
11. String query = "Select * FROM Item WHERE ID = 110";
12. Statement stmt = conn.createStatement();
13. ResultSet rs = stmt.executeQuery(query);
14.while(rs.next()) {
15.System.out.println("ID:" + rs.getInt("Id"));
16.System.out.println("Description:" + rs.getString("Descrip"));
17.System.out.println("Price:" + rs.getDouble("Price"));
18. System.out.println(Quantity:" + rs.getInt("Quantity"));
19.}
20. } catch (SQLException se) {
21. System.out.println("Error");
22. }
Assume that:
The required database driver is configured in the classpath.
The appropriate database is accessible with the dbURL, userName, and passWord exists.
The SQL query is valid.
What is the result?

A. Compilation fails.

B. The code prints information about Item 110.

C. An exception is thrown at runtime.

D. The code prints Error.

正解：B 解答を投票する

出題：9

Given:
class Bird {
public void fly () { System.out.print("Can fly"); }
}
class Penguin extends Bird {
public void fly () { System.out.print("Cannot fly"); }
}
and the code fragment:
class Birdie {
public static void main (String [ ] args) {
fly( ( ) -> new Bird ( ));
fly (Penguin : : new);
}
/* line n1 */
}
Which code fragment, when inserted at line n1, enables the Birdie class to compile?

A. static void fly (Supplier<? extends Bird> bird) {LOST

B. static void fly (Supplier<Bird> bird) {bird.get( ) fly ();}

C. static void fly (Consumer<? extends Bird> bird) {bird.accept( ) fly ();}

D. static void fly (Consumer<Bird> bird) {bird :: fly ();}

正解：B 解答を投票する

出題：10

Given the structure of the EHF and DEPT tables:

Given the code fragment:

What is the result?

A. The code throws a syntax error at ResultSet because the semicolon (:) is missing.

B. The code prints only the first record of the EM? table.

C. The code prints all of the records in the EMP table along with the respective department names.

D. The code prints all of the records in the EM? table but not with the respective department names.

正解：D 解答を投票する

出題：11

Given:

Which option fails?

A. Foo<String, String> grade = new Foo <> ("John", "A");

B. Foo<String, Integer> mark = new Foo<String, Integer> ("Steve", 100);

C. Foo<Object, Object> percentage = new Foo<String, Integer>("Steve", 100);

D. Foo<String, String> pair = Foo.<String>twice ("Hello World!");

正解：B 解答を投票する

出題：12

Given the code fragment:

What is the result?

A. text1text2text2text3

B. [text1, text2]

C. text1

D. text1text2

正解：D 解答を投票する

出題：13

Given the content of the files:

Given the code fragment from the Test. java file:

What is the result?

A. Compilation fails at line 14.

B. A MissingResourceException is thrown at run time.

C. Have a nice day!

D. Hi!

正解：A 解答を投票する

出題：14

Given the code fragments:

and

What is the result?

A. Video played.Game played.

B. A compilation error occurs.

C. class java.io.IOException

D. class java.lang.Exception

正解：D 解答を投票する

出題：15

Given the code fragment:

Assume that dbURL, userName, and password are valid.
Which code fragment can be inserted at line n1 to enable the code to print Connection Established?

A. Properties prop = new Properties();prop.put ("user", userName);prop.put ("password", password);con = DriverManager.getConnection (dbURL, prop);

B. Properties prop = new Properties();prop.put ("userid", userName);prop.put ("password", password); prop.put("url", dbURL);con = DriverManager.getConnection (prop);

C. con = DriverManager.getConnection (dbURL);con.setClientInfo ("user", userName);con.setClientInfo ("password", password);

D. con = DriverManager.getConnection (userName, password, dbURL);

正解：A 解答を投票する

1z1-809試験無料問題集「Oracle Java SE 8 Programmer II 認定」