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Stay ahead with 100% Free Java SE 8 Programmer I 1Z0-808 Dumps Practice Questions
Given code of Test.java file:
1. package com.sampleproject.oca;
2.
3. interface Blogger {
4. default void blog() throws Exception {
5. System.out.println("GENERIC");
6. }
7. }
8.
9. class TravelBlogger implements Blogger {
10. public void blog() {
11. System.out.println("TRAVEL");
12. }
13. }
14.
15. public class Test {
16. public static void main(String[] args) {
17. Blogger blogger = new TravelBlogger(); //Line n1
18. ((TravelBlogger)blogger).blog(); //Line n2
19. }
20. }
What will be the result of compiling and executing Test class?
Given code of Thought.java file:
1. public class Thought {
2. /*INSERT*/ {
3. System.out.println("All is well");
4. }
5. }
Which 3 options, if used to replace /*INSERT*/, will compile successfully and on execution will print "All is well" on to the console?
Consider below code of Test.java file:
1. package com.sampleproject.oca;
2.
3. class Super {
4. public String num = "10"; //Line n1
5. }
6.
7. class Sub extends Super {
8. protected int num = 20; //Line n2
9. }
10.
11. public class Test {
12. public static void main(String[] args) {
13. Super obj = new Sub();
14. System.out.println(obj.num += 2); //Line n3
15. }
16. }
What will be the result of compiling and executing above code?
Consider below codes of 2 java files:
1. //Flyable.java
2. package com.sampleproject.oca;
3.
4. public interface Flyable {
5. static int horizontalDegree() { //Line n1
6. return 20;
7. }
8.
9. default void fly() {
10. System.out.println("Flying at " + horizontalDegree() + " degrees."); //Line n2
11. }
12.
13. void land();
14. }
1. //Aeroplane.java
2. package com.sampleproject.oca;
3.
4. public class Aeroplane implements Flyable {
5. public void land() {
6. System.out.println("Landing at " + -Flyable.horizontalDegree() + " degrees."); //Line n3
7. }
8.
9. public static void main(String[] args) {
10. new Aeroplane().fly();
11. new Aeroplane().land();
12. }
13. }
What will be the result of compiling and executing Aeroplane class?
What will be the result of compiling and executing Test class?
1. package com.udayan.oca;
2.
3. import java.util.ArrayList;
4. import java.util.List;
5.
6. public class Test {
7. public static void main(String[] args) {
8. List
9. list.add(100);
10. list.add(200);
11. list.add(100);
12. list.add(200);
13. list.remove(new Integer(100));
14.
15. System.out.println(list);
16. }
17. }
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