Free 1Z0-809 Exam Dumps Preview

Given:

class Worker extends Thread {
CyclicBarrier cb;
public Worker(CyclicBarrier cb) { this.cb = cb; }
public void run () {
try {
cb.await();
System.out.println("Worker...");
}
catch (Exception ex) { }
}
}
class Master implements Runnable { //line n1
public void run () {
System.out.println("Master...");
}
}

and the code fragment:

Master master = new Master();
//line n2
Worker worker = new Worker(cb);

worker.start();

You have been asked to ensure that the run methods of both the Worker and Master classes are executed.

Which modification meets the requirement?

Given the code fragment:

Stream<Path> files = Files.list(Paths.get(System.getProperty("user.home"))); files.forEach (fName -> { //
line n1
try {
Path aPath = fName.toAbsolutePath(); //line n2
System.out.println(fName + ":"

+ Files.readAttributes(aPath, Basic.File.Attributes.class).creationTime
());
}
catch (IOException ex) {
ex.printStackTrace();

});

What is the result?

Given the code fragment:

Which should be inserted into line n1 to print Average = 2.5?

Given:

and

Which interface from the java.util.function package should you use to refactor the class Txt?

Given:

public class Counter {
public static void main (String[ ] args) {
int a = 10;
int b = -1;
assert (b >=1) : "Invalid Denominator";
int = a / b;
System.out.println (c);
}
}

What is the result of running the code with the -ea option?

Given the code fragment:

Which is the valid definition of the Course enum?

Given the code fragment:

List<String> empDetails = Arrays.asList("100, Robin, HR",
"200, Mary, AdminServices",
"101, Peter, HR");
empDetails.stream()
.filter(s-> s.contains("1"))
.sorted()
.

forEach(System.out::println); //line n1 What is the result?

Given the code fragment:

public static void main (String[] args) throws IOException {
BufferedReader brCopy = null;
try (BufferedReader br = new BufferedReader (new FileReader("employee.txt"))) { //
line n1
br.lines().forEach(c -> System.out.println(c));
brCopy = br; //line n2
}
brCopy.ready(); //line n3;
}

Assume that the ready method of the BufferedReader, when called on a closed BufferedReader, throws an exception, and employee.txt is accessible and contains valid text.

What is the result?

Given the code fragment:

List<Integer> nums = Arrays.asList (10, 20, 8):
System.out.println (
//line n1
);

Which code fragment must be inserted at line n1 to enable the code to print the maximum number in the nums list?

Given:

class FuelNotAvailException extends Exception { }
class Vehicle {
void ride() throws FuelNotAvailException { //line n1
System.out.println("Happy Journey!");
}
}
class SolarVehicle extends Vehicle {
public void ride () throws FuelNotAvailException { //line n2
super ride ();
}
}

and the code fragment:

public static void main (String[] args) throws Exception {
Vehicle v = new SolarVehicle ();

Given that data.txt and alldata.txt are accessible, and the code fragment:

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

Given the code fragment:

Which code fragment, when inserted at line n1, enables the code to print /First.txt?

Given that course.txt is accessible and contains:

Course : : Java

and given the code fragment:

public static void main (String[ ] args) {
int i;
char c;
try (FileInputStream fis = new FileInputStream ("course.txt");
InputStreamReader isr = new InputStreamReader(fis);) {
while (isr.ready()) { //line n1
isr.skip(2);
i = isr.read ();
c = (char) i;
System.out.print(c);
}
}
catch (Exception e) {
e.printStackTrace();
}
}

What is the result?

Given the code fragments:

interface CourseFilter extends Predicate<String> {

public default boolean test (String str) {
return str.equals ("Java");
}
}

and

List<String> strs = Arrays.asList("Java", "Java EE", "Java ME");
Predicate<String> cf1 = s - > s.length() > 3;
Predicate cf2 = new CourseFilter() { //line n1
public boolean test (String s) {
return s.contains ("Java");
}
};
long c = strs.stream()
.filter(cf1)
.filter(cf2 //line n2
.count();
System.out.println(c);

What is the result?

Given the code fragment:

UnaryOperator<Double> uo1 = s -> s*2; //line n1
List<Double> loanValues = Arrays.asList(1000.0, 2000.0);
loanValues.stream()
.filter(lv -> lv >= 1500)
.map(lv -> uo1.apply(lv)) //line n2
.forEach(s -> System.out.print(s + " "));

What is the result?

Given that these files exist and are accessible:

/sports/info.txt
/sports/cricket/players.txt
/sports/cricket/data/ODI.txt

and given the code fragment:

int maxDepth =2;
Stream<Path> paths = Files.find(Paths.get("/sports"),
maxDepth,
(p, a) -> p.getFileName().toString().endsWith ("txt"),
FileVisitOption.FOLLOW_LINKS);
Long fCount = paths.count();
System.out.println(fCount);

Assuming that there are NO soft-link/symbolic links to any of the files in the directory structure, what is the result?

Given the code fragments:

and

What is the result?

Given the code fragment:

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?

Given records from the Player table:

and given the code fragment:

try {
Connection conn = DriverManager.getConnection(URL, username, password);
Statement st= conn.createStatement(
ResultSet.TYPE_SCROLL_SENSITIVE,
ResultSet.CONCUR_UPDATABLE);
st.execute ("SELECT * FROM Player");
st.setMaxRows(2);
ResultSet rs = st.getResultSet();
rs.absolute(3);
while (rs.next ()) {
System.out.println(rs.getInt(1) + " " + rs.getString(2));
}
}
catch (SQLException ex) {
System.out.print("SQLException is thrown.");
}

Assume that:
The required database driver is configured in the classpath.
The appropriate database is accessible with URL, username, and password.
The SQL query is valid.

What is the result?

Given the code fragment:

Stream<List<String>> iStr= Stream.of (
Arrays.asList ("1", "John"),
Arrays.asList ("2", null)0;
Stream<<String> nInSt = iStr.flatMapToInt ((x) -> x.stream ());
nInSt.forEach (System.out :: print);

What is the result?

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

Given the code fragment:

Which statement can be inserted into line n1 to print 1,2; 1,10; 2,20;?

{System.out.print (i + "," + j+ "; ");};

Given:

public final class IceCream {
public void prepare() {}
}
public class Cake {
public final void bake(int min, int temp) {}
public void mix() {}
}
public class Shop {
private Cake c = new Cake ();
private final double discount = 0.25;
public void makeReady () { c.bake(10, 120); }
}
public class Bread extends Cake {
public void bake(int minutes, int temperature) {}
public void addToppings() {}
}

Which statement is true?

Given:

and the code fragment:

What is the result?

Given:

and the code fragment:

Which modification enables the code fragment to print Speaker?

Given the definition of the Employee class:

and this code fragment:

What is the result?

Given the code fragment:

BiFunction<Integer, Double, Integer> val = (t1, t2) -> t1 + t2; //line n1
System.out.println(val.apply(10, 10.5));

What is the result?

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

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 (o2); } } );

treeMap.putAll (unsortMap);

for (Map.Entry<Integer, String> entry : treeMap.entrySet () ) {
System.out.print (entry.getValue () + " ");
}
}
}

What is the result?

Given the code fragment:

Map<Integer, String> books = new TreeMap<>();
books.put (1007, "A");
books.put (1002, "C");
books.put (1001, "B");
books.put (1003, "B");
System.out.println (books);

What is the result?

Given:

and the code fragment:

What is the result?

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?