20 January, 2022
What 100% Correct 1Z0-809 Test Preparation Is
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Question 1
What is the result?
Question 2
Given the code fragment:
What is the result?
What is the result?
Question 3
Given the code fragment:
What is the result?
What is the result?
Question 4
Given:
and the command: java Product 0 What is the result?
and the command: java Product 0 What is the result?
Question 5
Given that these files exist and are accessible:
and given the code fragment:
Which code fragment can be inserted at line n1 to enable the code to print only /company/emp?
and given the code fragment:
Which code fragment can be inserted at line n1 to enable the code to print only /company/emp?
Question 6
Given the code fragments:
public class Book implements Comparator { String name;
double price; public Book () {}
public Book(String name, double price) { this.name = name;
this.price = price;
}
public int compare(Book b1, Book b2) { return b1.name.compareTo(b2.name);
}
public String toString() { return name + “:” + price;
}
}
and
Listbooks = Arrays.asList (new Book (“Beginning with Java”, 2), new book (“A
Guide to Java Tour”, 3));
Collections.sort(books, new Book()); System.out.print(books);
What is the result?
public class Book implements Comparator
double price; public Book () {}
public Book(String name, double price) { this.name = name;
this.price = price;
}
public int compare(Book b1, Book b2) { return b1.name.compareTo(b2.name);
}
public String toString() { return name + “:” + price;
}
}
and
List
Guide to Java Tour”, 3));
Collections.sort(books, new Book()); System.out.print(books);
What is the result?
Question 7
Given the code fragment:
Stream files = Files.walk(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?
Stream
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?
Question 8
Given:
What is the result?
What is the result?
Question 9
You want to create a singleton class by using the Singleton design pattern. Which two statements enforce the singleton nature of the design? (Choose two.)
Question 10
Given the code fragment:
What is the result?
What is the result?
Question 11
Given the code fragment:
What is the result?
What is the result?
Question 12
Given the code fragment:
What is the result?
What is the result?
Question 13
Given:
public class Canvas implements Drawable { public void draw () { }
}
public abstract class Board extends Canvas { }
public class Paper extends Canvas { protected void draw (int color) { }
}
public class Frame extends Canvas implements Drawable { public void resize () { }
}
public interface Drawable { public abstract void draw ();
}
Which statement is true?
public class Canvas implements Drawable { public void draw () { }
}
public abstract class Board extends Canvas { }
public class Paper extends Canvas { protected void draw (int color) { }
}
public class Frame extends Canvas implements Drawable { public void resize () { }
}
public interface Drawable { public abstract void draw ();
}
Which statement is true?
Question 14
Given:
IntStream stream = IntStream.of (1,2,3); IntFunction inFu= x -> y -> x*y; //line n1
IntStream newStream = stream.map(inFu.apply(10)); //line n2 newStream.forEach(System.output::print);
Which modification enables the code fragment to compile?
IntStream stream = IntStream.of (1,2,3); IntFunction
IntStream newStream = stream.map(inFu.apply(10)); //line n2 newStream.forEach(System.output::print);
Which modification enables the code fragment to compile?
Question 15
Given the code fragment:
Which code fragment, when inserted at line 7, enables printing 100?
Which code fragment, when inserted at line 7, enables printing 100?
Question 16
Given:
What is the result?
What is the result?
Question 17
Given the definition of the Vehicle class: class Vehicle {
String name;
void setName (String name) { this.name = name;
}
String getName() { return name;
}
}
Which action encapsulates the Vehicle class?
String name;
void setName (String name) { this.name = name;
}
String getName() { return name;
}
}
Which action encapsulates the Vehicle class?
Question 18
Given the code fragments:
and
Which two modifications enable to sort the elements of the emps list? (Choose two.)
and
Which two modifications enable to sort the elements of the emps list? (Choose two.)
Question 19
Given the content of the employee.txt file: Every worker is a master.
Given that the employee.txt file is accessible and the file allemp.txt does NOT exist, and the code fragment:
What is the result?
Given that the employee.txt file is accessible and the file allemp.txt does NOT exist, and the code fragment:
What is the result?