Higher Test Marks with Free Online 1Z0-809 Exam Practice

Given code of Test.java file: 

1. package com.udayan.ocp;

2.  

3. import java.util.ArrayDeque;

4. import java.util.Deque;

5.  

6. public class Test {

7.     public static void main(String[] args) {

8.         Deque deque = new ArrayDeque<>();

9.         deque.push(new Boolean("abc"));

10.         deque.push(new Boolean("tRuE"));

11.         deque.push(new Boolean("FALSE"));

12.         deque.push(true);

13.         System.out.println(deque.pop() + ":" + deque.peek() + ":" + deque.size());

14.     }

15. }

What will be the result of compiling and executing Test class?

Given code of Test.java file: 

1. package com.udayan.ocp;

2.  

3. import java.util.stream.Stream;

4.  

5. public class Test {

6.     public static void main(String[] args) {

7.         Stream stream = Stream.of("d", "cc", "bbb", "aaaa");

8.         stream.sorted().forEach(System.out::println);

9.     }

10. }

Which of the following needs to be done, so that output is: 

d

cc

bbb

aaaa

Given:

Given code of Test.java file: 

1. package com.udayan.ocp;

2.  

3. import java.util.Arrays;

4. import java.util.Comparator;

5. import java.util.List;

6.  

7. public class Test {

8.     public static void main(String[] args) {

9.         List list = Arrays.asList(10, 20, 8);

10.         

11.         System.out.println(list.stream().max(Comparator.comparing(a -> a)).get()); //Line 1

12.  

13.         System.out.println(list.stream().max(Integer::compareTo).get()); //Line 2

14.  

15.         System.out.println(list.stream().max(Integer::max).get()); //Line 3

16.     }

17. }

Which of the following statement is true?