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NEW QUESTION 92
Given:
and this code fragment:
What is the result?
- A. A compilation error occurs at line n1.
- B. Open-Close-Open-
- C. Open-Close-
Exception - 1
Open-Close- - D. Open-Close-Open-Close-
Answer: A
NEW QUESTION 93
Given the structure of the STUDENT table:
Student (id INTEGER, name VARCHAR)
Given:
public class Test {
static Connection newConnection =null;
public static Connection get DBConnection () throws SQLException {
try (Connection con = DriveManager.getConnection(URL, username, password)) { newConnection = con;
}
return newConnection;
}
public static void main (String [] args) throws SQLException {
get DBConnection ();
Statement st = newConnection.createStatement();
st.executeUpdate("INSERT INTO student VALUES (102, 'Kelvin')");
}
}
Assume that:
The required database driver is configured in the classpath.
The appropriate database is accessible with the URL, userName, and passWord exists.
The SQL query is valid.
What is the result?
- A. A SQLException is thrown as runtime.
- B. The program executes successfully and the STUDENT table is updated with one record.
- C. The program executes successfully and the STUDENT table is NOT updated with any record.
- D. A NullPointerException is thrown as runtime.
Answer: D
NEW QUESTION 94
Given the code fragment:
What is the result?
- A. 1 3
1 3 - B. 1 3
followed by an ArrayIndexOutOfBoundsException - C. Compilation fails.
- D. 1 3
1 3 0 0 - E. 1 3 5 7
1 3
Answer: E
NEW QUESTION 95
Given the code fragment:
What is the result?
- A. 0
- B. Compilation fails
- C. 1
- D. AnArrayIndexOutOfBoundsException is thrown at runtime
- E. 2
Answer: E
NEW QUESTION 96
Given the code fragment:
Which three code fragments can be independently inserted at line n1 to enable the code to print one?
- A. double x = 1;
- B. long x = 1;
- C. short x = 1;
- D. Integer x = new Integer ("1") ;
- E. byte x = 1;
- F. string x = "1";
Answer: C,D,E
NEW QUESTION 97
Given the code fragment:
Path file = Paths.get ("courses.txt");
// line n1
Assume the courses.txtis accessible.
Which code fragment can be inserted at line n1to enable the code to print the content of the courses.txt file?
List<String> fc = Files.list(file);
- A. fc.forEach (s - > System.out.println(s));
- B. fc.forEach (s - > System.out.println(s));
List<String> fc = readAllLines(file); - C. fc.stream().forEach (s - > System.out.println(s));
Stream<String> fc = Files.readAllLines (file); - D. fc.stream().forEach (s - > System.out.println(s));
Stream<String> fc = Files.lines (file);
Answer: A
NEW QUESTION 98
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
Answer: C
NEW QUESTION 99
Given the code fragment:
9. Connection conn = DriveManager.getConnection(dbURL, userName, passWord);
10. String query = "SELECT id FROM Employee";
11. try (Statement stmt = conn.createStatement()) {
12. ResultSet rs = stmt.executeQuery(query);
13. stmt.executeQuery("SELECT id FROM Customer");
14. while (rs.next()) {
15. //process the results
16. System.out.println("Employee ID: "+ rs.getInt("id"));
17. }
18. } catch (Exception e) {
19. System.out.println ("Error");
20. }
Assume that:
The required database driver is configured in the classpath.
The appropriate database is accessible with the dbURL, userName, and passWord exists.
The Employee and Customer tables are available and each table has id column with a few records and the SQL queries are valid.
What is the result of compiling and executing this code fragment?
- A. compilation fails on line 13.
- B. The program prints customer IDs.
- C. The program prints Error.
- D. The program prints employee IDs.
Answer: C
NEW QUESTION 100
Which two statements are true about localizing an application?
- A. Resource bundle files include data and currency information.
- B. Support for new regional languages does not require recompilation of the code.
- C. Textual elements (messages and GUI labels) are hard-coded in the code.
- D. Language codes use lowercase letters and region codes use uppercase letters.
- E. Language and region-specific programs are created using localized data.
Answer: B,D
NEW QUESTION 101
Given the code fragment:
Which code fragment, when inserted at line 9, enables the code to print true?
- A. String str2 + str1;
- B. String str2 = sb1.toString ( );
- C. String str2 = "Duke";
- D. String str2 = new String (str1);
Answer: A
NEW QUESTION 102
You have been asked to create a ResourceBundle which uses a properties file to localize an application.
Which code example specifies valid keys of menu1 and menu2 with values of File Menu and View Menu?
- A. <key>menu1</key><value>File Menu</value> <key>menu2</key><value>View Menu</value>
- B. menu1 = File Menu menu2 = View Menu
- C. <key name = 'menu1">File Menu</key> <key name = 'menu2">View Menu</key>
- D. menu1, File Menu, menu2, View Menu
Answer: A
NEW QUESTION 103
Given the code fragments:
4. void doStuff() throws ArithmeticException, NumberFormatException,
Exception {
5. if (Math.random() >-1 throw new Exception ("Try again");
6. }
and
24. try {
25. doStuff ( ):
26. } catch (ArithmeticException | NumberFormatException | Exception e)
{
27. System.out.println (e.getMessage()); }
28. catch (Exception e) {
29. System.out.println (e.getMessage()); }
30. }
Which modification enables the code to print Try again?
- A. Comment the lines 28, 29 and 30.
- B. Replace line 26 with:
} catch (ArithmeticException | NumberFormatException e) { - C. Replace line 27 with:
throw e; - D. Replace line 26 with:
} catch (Exception | ArithmeticException | NumberFormatException e) {
Answer: B
NEW QUESTION 104
Given the code fragment:
public class Foo {
public static void main (String [ ] args) {
Map<Integer, String> unsortMap = new HashMap< > ( );
unsortMap.put (10, "z");
unsortMap.put (5, "b");
unsortMap.put (1, "d");
unsortMap.put (7, "e");
unsortMap.put (50, "j");
Map<Integer, String> treeMap = new TreeMap <Integer, String> (new
Comparator<Integer> ( ) {
@Override public int compare (Integer o1, Integer o2) {return o2.compareTo
(o1); } } );
treeMap.putAll (unsortMap);
for (Map.Entry<Integer, String> entry : treeMap.entrySet () ) {
System.out.print (entry.getValue () + " ");
}
}
}
What is the result?
- A. j z e b d
- B. z b d e j
- C. d b e z j
- D. A compilation error occurs.
Answer: A
NEW QUESTION 105
Given the code fragments:
and
Which two modifications enable to sort the elements of the emps list? (Choose two.)
- A. Replace line n1 with
class Person implements Comparable<Person> - B. Replace line n1 with
class Person extends Comparator<Person> - C. At line n2 insert
public int compare (Person p1, Person p2) {
return p1.name.compareTo (p2.name);
} - D. At line n2 insert
public int compareTo (Person p) {
return this.name.compareTo (p.name);
} - E. At line n2 insert:
public int compareTo (Person p, Person p2) {
return p1.name.compareTo (p2.name);
} - F. Replace line n1 with
class Person implements Comparator<Person>
Answer: A,E
NEW QUESTION 106
Given that version.txtis accessible and contains:
1234567890
and given the code fragment:
What is the result?
- A. 0
- B. 1
- C. 2
- D. The program prints nothing.
Answer: C
NEW QUESTION 107
Which two statements are true for a two-dimensional array?
- A. Using a row by column convention, each row of a two-dimensional array must be of the same size.
- B. At declaration time, the number of elements of the array in each dimension must be specified.
- C. It is implemented as an array of the specified element type.
- D. All methods of the class Object may be invoked on the two-dimensional array.
Answer: C,D
NEW QUESTION 108
Given:
And given the code fragment:
What is the result?
- A. C1C2
- B. C2C2
- C. Compilation fails.
- D. C1C1
Answer: C
NEW QUESTION 109
......
1z0-809 exam questions from ITPassLeader dumps: https://www.itpassleader.com/Oracle/1z0-809-dumps-pass-exam.html (195 Q&As)
Free 2022 Java SE 1z0-809 dumps are available on Google Drive shared by ITPassLeader: https://drive.google.com/open?id=1X6IyNGQufQIkNEcQke1A5iJ_Tp7ChoVb