[Mar-2026] The Oracle 1z0-809 Exam Test For Brief Preparation
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NEW QUESTION # 115
Given the code fragment:
What is the result?
- A. Javacourse
- B. A compilation error occurs at line n2.
- C. A compilation error occurs at line n1.
- D. courseJava
Answer: C
NEW QUESTION # 116
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 Exception {//line n2
super ride ();
}
}
and the code fragment:
public static void main (String[] args) throws FuelNotAvailException, Exception { Vehicle v = new SolarVehicle (); v.ride();
}
Which modification enables the code fragment to print Happy Journey!?
- A. Replace line n2 with void ride() throws Exception {
- B. Replace line n2 with private void ride() throws FuelNotAvailException {
- C. Replace line n1 with public void ride() throws FuelNotAvailException {
- D. Replace line n1 with protected void ride() throws Exception {
Answer: D
NEW QUESTION # 117
Given:
What is the result?
- A. Bar Hello
Baz Hello - B. Bar Hello
Foo Hello - C. A compilation error occurs in the Daze class.
- D. Baz Hello
Answer: A
NEW QUESTION # 118
Given:
public class Customer {
private String fName;
private String lName;
private static int count;
public customer (String first, String last) {fName = first, lName = last;
++count;}
static { count = 0; }
public static int getCount() {return count; }
}
public class App {
public static void main (String [] args) {
Customer c1 = new Customer("Larry", "Smith");
Customer c2 = new Customer("Pedro", "Gonzales");
Customer c3 = new Customer("Penny", "Jones");
Customer c4 = new Customer("Lars", "Svenson");
c4 = null;
c3 = c2;
System.out.println (Customer.getCount());
}
}
What is the result?
- A. 0
- B. 1
- C. 2
- D. 3
- E. 4
Answer: C
NEW QUESTION # 119
Given the code fragment:
List<Integer> values = Arrays.asList (1, 2, 3);
values.stream ()
. map(n -> n*2) //line n1
. peek(System.out::print) //line n2
. count();
What is the result?
- A. A compilation error occurs at line n1.
- B. A compilation error occurs at line n2.
- C. The code produces no output.
- D. 0
Answer: D
NEW QUESTION # 120
Given:
interface Rideable {Car getCar (String name); }
class Car {
private String name;
public Car (String name) {
this.name = name;
}
}
Which code fragment creates an instance of Car?
- A. Car vehicle = Rideable : : new : : getCar("MyCar");
- B. Car auto = Car ("MyCar"): : new;
- C. Car auto = Car : : new;
Car vehicle = auto : : getCar("MyCar"); - D. Rideable rider = Car : : new;
Car vehicle = rider.getCar("MyCar");
Answer: D
NEW QUESTION # 121
Given:
and the code fragment:
What is the result?
- A. A compilation error occurs because the try block is declared without a catch or finally block.
- B. A compilation error occurs at line n1.
- C. An exception is thrown at line n2.
- D. 0
Answer: D
NEW QUESTION # 122
Given the code fragment:
List<String> codes = Arrays.asList (“DOC”, “MPEG”, “JPEG”);
codes.forEach (c -> System.out.print(c + “ “));
String fmt = codes.stream()
.filter (s-> s.contains (“PEG”))
.reduce((s, t) -> s + t).get();
System.out.println(“\n” + fmt);
What is the result?
DOC MPEG JPEG
- A. MPEGJPEG
- B. MPEGMPEGJPEG
MPEGJPEG - C. MPEGJPEG
DOC MPEG MPEGJPEG - D. The order of the output is unpredictable.
Answer: C
NEW QUESTION # 123
Given:
and the code fragment:
Which definition of the ColorSorter class sorts the blocks list?
- A.
- B.
- C.
- D.
Answer: B
NEW QUESTION # 124
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. <key name = 'menu1">File Menu</key><key name = 'menu2">View Menu</key>
- C. menu1 = File Menumenu2 = View Menu
- D. menu1, File Menu, menu2, View Menu
Answer: C
NEW QUESTION # 125
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?
static void fly (Consumer<Bird> bird) {
- A. bird.accept( ) fly ();
}
static void fly (Supplier<Bird> bird) { - B. LOST
- C. bird.get( ) fly ();
}
static void fly (Supplier<? extends Bird> bird) { - D. bird :: fly ();
}
static void fly (Consumer<? extends Bird> bird) {
Answer: C
NEW QUESTION # 126
Which two reasons should you use interfaces instead of abstract classes? (Choose two.)
- A. You want to take advantage of multiple inheritance of type.
- B. You expect that unrelated classes would implement your interfaces.
- C. You want to declare non-static on non-final fields.
- D. You want to share code among several closely related classes.
- E. You expect that classes that implement your interfaces have many common methods or fields, or require access modifiers other than public.
Answer: A,B
Explanation:
Explanation/Reference: https://books.google.com.br/books?id=nS2tBQAAQBAJ&pg=PT235&lpg=PT235&dq=You+want+to
+share+code+among+several+closely+related+classes.&source=bl&ots=3oYOu2XXN-
&sig=uVFS0KB15BqyEgghXnnjJSUdcrE&hl=pt-BR&sa=X&ved=0ahUKEwjlsKe-
n6baAhVEhZAKHeiEDTgQ6AEIMDAB#v=onepage&q=You%20want%20to%20share%20code%20among%
20several%20closely%20related%20classes.&f=false
NEW QUESTION # 127
Given:
public class MainMethod {
void main() {
System.out.println("one");
}
static void main(String args) {
System.out.println("two");
}
public static void main(String[] args) {
System.out.println("three");
}
void mina(Object[] args) {
System.out.println("four");
}
}
What is printed out when the program is excuted?
- A. three
- B. one
- C. two
- D. four
Answer: A
NEW QUESTION # 128
Given:
Which two classes use the shape class correctly?
- A. Option A
- B. Option E
- C. Option B
- D. Option D
- E. Option F
- F. Option C
Answer: B,C
Explanation:
When an abstract class is subclassed, the subclass usually provides implementations for all of the abstract methods in its parent class (E). However, if it does not, then the subclass must also be declared abstract (B). Note: An abstract class is a class that is declared abstract-it may or may not include abstract methods. Abstract classes cannot be instantiated, but they can be subclassed.
NEW QUESTION # 129
Given the code fragment:
What is the result?
- A. Compilation fails.
- B. 2012-02-10
- C. A DateTimeException is thrown at runtime.
- D. 2012-02-11
Answer: C
NEW QUESTION # 130
For which three objects must a vendor provide implementations in its JDBC driver?
- A. ResultSet
- B. SQLException
- C. Time
- D. Connection
- E. Statement
- F. Date
- G. DriverManager
Answer: A,D,E
Explanation:
Database vendors support JDBC through the JDBC driver interface or through the ODBC connection. Each driver must provide implementations of java.sql.Connection, java.sql.Statement, java.sql.PreparedStatement, java.sql.CallableStatement, and java.sql.Re sultSet. They must also implement the java.sql.Driver interface for use by the generic java.sql.DriverManager interface.
NEW QUESTION # 131
Given:
What is the result?
- A. Hi Interface-1
- B. Hi Interface-2
- C. A compilation error occurs.
- D. Hi MyClass
Answer: D
NEW QUESTION # 132
Given the code fragment:
Which code fragment, when inserted at line 7, enables printing 100?
Function<Integer> funRef = e -> e + 10;
- A. int result = funRef.apply (value);
- B. Integer result = funRef.apply (10);
ToIntFunction<Integer> funRef = e -> e + 10; - C. int result = funRef.applyAsInt (value);
ToIntFunction funRef = e -> e + 10; - D. Integer result = funRef.apply(value);
IntFunction funRef = e -> e + 10;
Answer: D
NEW QUESTION # 133
Given:
interface Doable {
public void doSomething (String s);
}
Which two class definitions compile?
- A. public class Do implements Doable {
public void doSomething(Integer i) { }
public void doSomething(String s) { }
public void doThat (String s) { }
} - B. public class Action implements Doable {
public void doSomething(Integer i) { }
public String doThis(Integer j) { }
} - C. public abstract class Task implements Doable {
public void doSomethingElse(String s) { }
} - D. public abstract class Work implements Doable {
public abstract void doSomething(String s) { }
public void doYourThing(Boolean b) { }
} - E. public class Job implements Doable {
public void doSomething(Integer i) { }
}
Answer: B,E
NEW QUESTION # 134
Given:
public interface Moveable<Integer> {
public default void walk (Integer distance) {System.out.println("Walking");) public void run(Integer distance);
}
Which statement is true?
- A. Moveable can be used as below:Moveable animal = (Integer n) - >
System.out.println(n);animal.run(100);Moveable.walk(20); - B. Movable cannot be used in a lambda expression.
- C. Moveable can be used as below:Moveable<Integer> animal = n - > System.out.println("Running" + n);animal.run(100);animal.walk(20);
- D. Moveable can be used as below:Moveable<Integer> animal = n - > n +
10;animal.run(100);animal.walk(20);
Answer: C
NEW QUESTION # 135
Given the code fragment:
List<String> colors = Arrays.asList("red", "green", "yellow");
Predicate<String> test = n - > {
System.out.println("Searching...");
return n.contains("red");
};
colors.stream()
.filter(c -> c.length() > 3)
.allMatch(test);
What is the result?
- A. Searching...Searching...Searching...
- B. Searching...Searching...
- C. A compilation error occurs.
- D. Searching...
Answer: D
NEW QUESTION # 136
Given the code fragment:
Which modification enables the code to print Price 5 New Price 4?
- A. Replace line n3 with .forEach (n -> System.out.println ("New Price" + n));
- B. Replace line n2 with .mapToInt (n -> n ?1);
- C. Replace line n1 with .forEach (e -> System.out.print ("Price" + e))
- D. Replace line n2 with .map (n -> System.out.println ("New Price" + n ?)) and remove line n3
Answer: A
NEW QUESTION # 137
......
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