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?
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?
Given code of Test.java file:
1. package com.sampleproject.oca;
2.
3. public class Test {
4. public static void main(String[] args) {
5. try { //outer
6. try { //inner
7. System.out.println(1/0);
8. } catch(ArithmeticException e) {
9. System.out.println("INNER");
10. } finally {
11. System.out.println("FINALLY 1");
12. }
13. } catch(ArithmeticException e) {
14. System.out.println("OUTER");
15. } finally {
16. System.out.println("FINALLY 2");
17. }
18. }
19. }
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 str1 = " ";
boolean b1 = str1.isEmpty();
System.out.println(b1);
str1.trim();
b1 = str1.isEmpty();
System.out.println(b1);
}
}
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?
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