What will be the result of compiling and executing class M?
1. package com.udayan.ocp;
2.
3. class M {
4. private int num1 = 100;
5. class N {
6. private int num2 = 200;
7. }
8.
9. public static void main(String[] args) {
10. M outer = new M();
11. M.N inner = outer.new N();
12. System.out.println(outer.num1 + inner.num2);
13. }
14. }
Given code of Test.java file:
1. package com.udayan.ocp;
2.
3. import java.util.List;
4. import java.util.Map;
5. import java.util.stream.Collectors;
6. import java.util.stream.Stream;
7.
8. class Certification {
9. String studId;
10. String test;
11. int marks;
12.
13. Certification(String studId, String test, int marks) {
14. this.studId = studId;
15. this.test = test;
16. this.marks = marks;
17. }
18.
19. public String toString() {
20. return "{" + studId + ", " + test + ", " + marks + "}";
21. }
22.
23. public String getStudId() {
24. return studId;
25. }
26.
27. public String getTest() {
28. return test;
29. }
30.
31. public int getMarks() {
32. return marks;
33. }
34. }
35.
36. public class Test {
37. public static void main(String[] args) {
38. Certification c1 = new Certification("S001", "OCA", 87);
39. Certification c2 = new Certification("S002", "OCA", 82);
40. Certification c3 = new Certification("S001", "OCP", 79);
41. Certification c4 = new Certification("S002", "OCP", 89);
42. Certification c5 = new Certification("S003", "OCA", 60);
43. Certification c6 = new Certification("S004", "OCA", 88);
44.
45. Stream
46. Map
47. stream.collect(Collectors.partitioningBy(s -> s.equals("OCA")));
48. System.out.println(map.get(true));
49. }
50. }
What will be the result of compiling and executing Test class?
Given:
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.)
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