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. class Person {
8. private String firstName;
9. private String lastName;
10.
11. public Person(String firstName, String lastName) {
12. this.firstName = firstName;
13. this.lastName = lastName;
14. }
15.
16. public String getFirstName() {
17. return firstName;
18. }
19.
20. public String getLastName() {
21. return lastName;
22. }
23.
24. public String toString() {
25. return "{" + firstName + ", " + lastName + "}";
26. }
27. }
28.
29. public class Test {
30. public static void main(String[] args) {
31. List
32. new Person("Tom", "Riddle"),
33. new Person("Tom", "Hanks"),
34. new Person("Yusuf", "Pathan"));
35. list.stream().sorted(Comparator.comparing(Person::getFirstName).reversed()
36. .thenComparing(Person::getLastName)).forEach(System.out::println);
37. }
38. }
What will be the result of compiling and executing Test class?
Given the content of Operator.java, EngineOperator.java, and Engine.java files:
Given code of Test.java file:
package com.udayan.ocp;
import java.util.concurrent.*;
public class Test {
public static void main(String[] args) throws InterruptedException, ExecutionException {
ExecutorService es = Executors.newSingleThreadExecutor();
Future
System.out.println(f.get());
es.shutdown();
}
}
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.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
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?
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