18 October, 2019

[Oct-2019-18] Most Up-to-date 1Z0-809 Lab

Want to know Certleader 1Z0-809 Exam practice test features? Want to lear more about Oracle Java SE 8 Programmer II certification experience? Study Practical Oracle 1Z0-809 answers to Most recent 1Z0-809 questions at Certleader. Gat a success with an absolute guarantee to pass Oracle 1Z0-809 (Java SE 8 Programmer II) test on your first attempt.

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Total 164 questions Full Exam Access

Question 1

Given the code fragment:
1Z0-809 dumps exhibit

What is the result?

A compilation error occurs at line n1.

courseJava

Javacourse

A compilation error occurs at line n2.

Question 2

Given:
class CheckClass {
public static int checkValue (String s1, String s2) { return s1 length() – s2.length();
}
}
and the code fragment:
String[] strArray = new String [] {“Tiger”, “Rat”, “Cat”, “Lion”}
//line n1
for (String s : strArray) { System.out.print (s + “ “);
}
Which code fragment should be inserted at line n1 to enable the code to print Rat Cat Lion Tiger?

Arrays.sort(strArray, CheckClass : : checkValue);

Arrays.sort(strArray, (CheckClass : : new) : : checkValue);

Arrays.sort(strArray, (CheckClass : : new).checkValue);

Arrays.sort(strArray, CheckClass : : new : : checkValue);

Question 3

Given that data.txt and alldata.txt are accessible, and the code fragment:
1Z0-809 dumps exhibit

What is required at line n1 to enable the code to overwrite alldata.txt with data.txt?

br.close();

bw.writeln();

br.flush();

bw.flush();

Question 4

Given the content:
1Z0-809 dumps exhibit

and given the code fragment:
1Z0-809 dumps exhibit

Which two code fragments, when inserted at line 1 independently, enable the code to print “Wie geht’s?”

currentLocale = new Locale (“de”, “DE”);

currentLocale = new Locale.Builder ().setLanguage (“de”).setRegion (“DE”).build ();

currentLocale = Locale.GERMAN;

currentlocale = new Locale(); currentLocale.setLanguage (“de”); currentLocale.setRegion (“DE”);

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

Question 5

Given the code fragment:
1Z0-809 dumps exhibit

Which two code fragments, when inserted at line n1 independently, result in the output PEEK: Unix?

.anyMatch ();

.allMatch ();

.findAny ();

.noneMatch ();

.findFirst ();

Question 6

Given the code fragment:
1Z0-809 dumps exhibit

What is the result?

A compilation error occurs at line n1.

Checking…

Checking… Checking…

A compilation error occurs at line n2.

Question 7

Which two statements are true about synchronization and locks? (Choose two.)

A thread automatically acquires the intrinsic lock on a synchronized statement when executed.

The intrinsic lock will be retained by a thread if return from a synchronized method is caused by an uncaught exception.

A thread exclusively owns the intrinsic lock of an object between the time it acquires the lock and the time itreleases it.

A thread automatically acquires the intrinsic lock on a synchronized method’s object when entering that method.

Threads cannot acquire intrinsic locks on classes.

Question 8

Given:
public class product { int id; int price;
public Product (int id, int price) { this.id = id;
this.price = price;
}
public String toString() { return id + “:” + price; }
}
and the code fragment:
List products = Arrays.asList(new Product(1, 10), new Product (2, 30),
new Product (2, 30));
Product p = products.stream().reduce(new Product (4, 0), (p1, p2) -> { p1.price+=p2.price;
return new Product (p1.id, p1.price);}); products.add(p); products.stream().parallel()
.reduce((p1, p2) - > p1.price > p2.price ? p1 : p2)
.i fPresent(System.out: :println); What is the result?

2 : 30

4 : 0

4 : 60

4 : 602 : 303 : 201 : 10

The program prints nothing.

Question 9

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?

Comment the lines 28, 29 and 30.

Replace line 26 with:} catch (Exception | ArithmeticException | NumberFormatException e) {

Replace line 26 with:} catch (ArithmeticException | NumberFormatException e) {

Replace line 27 with: throw e;

Question 10

Given the code fragment:
1Z0-809 dumps exhibit

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?

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

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

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

con = DriverManager.getConnection (dbURL); con.setClientInfo (“user”, userName); con.setClientInfo (“password”, password);

Question 11

Given:
class Sum extends RecursiveAction { //line n1 static final int THRESHOLD_SIZE = 3;
int stIndex, lstIndex; int [ ] data;
public Sum (int [ ]data, int start, int end) { this.data = data;
this stIndex = start; this. lstIndex = end;
}
protected void compute ( ) { int sum = 0;
if (lstIndex – stIndex <= THRESHOLD_SIZE) { for (int i = stIndex; i < lstIndex; i++) {
sum += data [i];
}
System.out.println(sum);
} else {
new Sum (data, stIndex + THRESHOLD_SIZE, lstIndex).fork( ); new Sum (data, stIndex,
Math.min (lstIndex, stIndex + THRESHOLD_SIZE)
).compute ();
}
}
}
and the code fragment:
ForkJoinPool fjPool = new ForkJoinPool ( ); int data [ ] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10}
fjPool.invoke (new Sum (data, 0, data.length));
and given that the sum of all integers from 1 to 10 is 55. Which statement is true?

The program prints several values that total 55.

The program prints 55.

A compilation error occurs at line n1.

The program prints several values whose sum exceeds 55.

Question 12

For which three objects must a vendor provide implementations in its JDBC driver? (Choose three.)

Time

Date

Statement

ResultSet

Connection

SQLException

DriverManager

Question 13

Given the code fragment:
1Z0-809 dumps exhibit

What is the result?

A compilation error occurs at line n1.

A compilation error occurs at line n2.

The code reads the password without echoing characters on the console.

A compilation error occurs because the IOException isn’t declared to be thrown or caught?

Question 14

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

It accepts one argument and returns void.

It accepts one argument and returns boolean.

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

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

Question 15

Given:

and the code fragment:
1Z0-809 dumps exhibit

Which modification enables the code fragment to print Speaker?

Implement Predicate in the Product.ProductFilter class and replace line n2 with .filter (p-> p.ProductFilter.test (p))

Replace line n1 with:public static boolean isAvailable (Product p) {

Replace line n2 with:.filter (p -> p.ProductFilter: :isAvailable (p))

Replace line n2 with:.filter (p -> Product: :ProductFilter: :isAvailable ())

Question 16

Given the code fragment:
1Z0-809 dumps exhibit

Which code fragment, when inserted at line n1, ensures false is printed?

boolean b = cs.stream() .findAny() .get() .equals(“Java”);

boolean b = cs.stream() .anyMatch (w -> w.equals (“Java”));

boolean b = cs.stream() .findFirst() .get() .equals(“Java”);

boolean b = cs.stream() .allMatch(w -> w.equals(“Java”));

Question 17

Given:

and the code fragment:
1Z0-809 dumps exhibit

What is the result?

A compilation error occurs at line n2.

A compilation error occurs because the try block doesn’t have a catch or finally block.

A compilation error occurs at line n1.

The program compiles successfully.

Question 18

Given:

What is the result?

IT:null

A NullPointerException is thrown at run time.

A compilation error occurs.

IT:0.0

Question 19

Which code fragment is required to load a JDBC 3.0 driver?

Connection con = Connection.getDriver (“jdbc:xyzdata://localhost:3306/EmployeeDB”);

Class.forName(“org.xyzdata.jdbc.NetworkDriver”);

Connection con = DriverManager.getConnection (“jdbc:xyzdata://localhost:3306/EmployeeDB”);

DriverManager.loadDriver (“org.xyzdata.jdbc.NetworkDriver”);

Question 20

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?

menu1, File Menu, menu2, View Menu Menu

menu1 = File Menu menu2 = View Menu

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Total 164 questions Full Exam Access