Free Oracle 1Z0-808 Exam Questions

Consider below codes of 3 java files:

1. //M.java

2. package com.sampleproject.oca;

3.  

4. public class M {

5.     public void printName() {

6.         System.out.println("M");

7.     }

8. }

1. //N.java

2. package com.sampleproject.oca;

3.  

4. public class N extends M {

5.     public void printName() {

6.         System.out.println("N");

7.     }

8. }

1. //Test.java

2. package com.sampleproject.oca.test;

3.  

4. import com.sampleproject.oca.*;

5.  

6. public class Test {

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

8.         M obj1 = new M();

9.         N obj2 = (N)obj1;

10.         obj2.printName();

11.     }

12. }

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

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

package com.udayan.oca;

public class Test {

     public static void main(String[] args) {

         String str = "Java Rocks!";

         System.out.println(str.length() + " : " + str.charAt(10));

     }

}

Given the code fragment:

Which of the following is not a valid array declaration?

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?