What will be the result of compiling and executing Test class?
package com.udayan.oca;
public class Test {
public static void main(String[] args) {
m1(null);
}
static void m1(CharSequence s) {
System.out.println("CharSequence");
}
static void m1(String s) {
System.out.println("String");
}
static void m1(Object s) {
System.out.println("Object");
}
}
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 the code fragments:
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. public class Test {
4. public static void main(String[] args) {
5. /*INSERT*/ x = 7, y = 200;
6. System.out.println(String.valueOf(x + y).length());
7. }
8. }
Which of the following options, if used to replace /*INSERT*/, will compile successfully and on execution will print 3 on to the console?
Select 3 options.
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