Latest Oracle 1z0-809 Dumps Pdf, 1z0-809 Valid Exam Topics

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Oracle Java SE 8 Programmer II Sample Questions (Q148-Q153):

NEW QUESTION # 148
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?

Answer: C


NEW QUESTION # 149
Given the code fragment:

Which three code fragments are valid at line n1?

Answer: B,D,E


NEW QUESTION # 150
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?

Answer: C


NEW QUESTION # 151
Given:
public interface Moveable<Integer> {
public default void walk (Integer distance) {System.out.println("Walking");)
public void run(Integer distance);
}
Which statement is true?

Answer: C


NEW QUESTION # 152
Given:
Book.java:
public class Book {
private String read(String bname) { return "Read" + bname }
}
EBook.java:
public class EBook extends Book {
public class String read (String url) { return "View" + url }
}
Test.java:
public class Test {
public static void main (String[] args) {
Book b1 = new Book();
b1.read("Java Programing");
Book b2 = new EBook();
b2.read("http://ebook.com/ebook");
}
}
What is the result?

Answer: A


NEW QUESTION # 153
......

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