1 | Identify the code fragments that execute the method tutor() in a separate thread |
2 | What would be the output of the following
public static void main(String[] args) {
long i = (long)Math.round(Math.random());
switch(i){
case 0: System.out.println(0);break;
case 1:System.out.println(1);break;
}
} |
3 | public class If {
public static void main(String[] args) {
int i;
if(i=0){
System.out.println("true");
}
}
}
What is the compilation error we get when we compile the above code? |
4 | What would be the output of following code?
1. public static void main(String[] args) {
2. List<Float> list = new ArrayList<Float>();
3.
4. list.add(3.1);
5. list.add(2.09);
6. list.add(1.0);
7.
8. for(Float i : shuffle(list)){
9. System.out.println(i);
10. }
11.
12. }
13. private static<T extends Comparable<? super T>> List<T> shuffle(List<T > list) {
14. Collections.sort(list);
15. return list;
16. } |
5 | What will be the output when the following code is run?
1. public class Exception {
2.
3. public static void main(String[] args) {
4.
5. try {
6.
7. List<String> numbers = new LinkedList<String>();
8.
9. int i = 0;
10.
11. numbers.add(i + "");
12.
13. for (; i <5;)
14. numbers.add(numbers.get(numbers.size() - 1) + i);
15. i++;
16.
17. System.out.printf("Zero - Five %s", numbers);
18.
19. } catch (Throwable t) {
20. t.printStackTrace();
21. }
22. }
23. } |
6 | public class Exceptional {
static int[] i;
static { i[0]=11; }
public static void main(String[] args) { /* main code here */ }
}
What happens when we run the above code? |
7 | What will be the o/p of the following code:
1. public enum TestEnumDefintion implements Serializable, Runnable {
2.
3. TEST_I, TEST_II, ;
4.
5. public void run() {
6.
7. try {
8. Thread.sleep(1000);
9. } catch (InterruptedException e) {
10. e.printStackTrace();
11. }
12. System.out.println("Running inside an enum!!!");
13. }
14.
15. public static void main(String[] args) {
16. new Thread(TestEnumDefintion.TEST_I).start();
17. }
18.
19. } |
8 | The following piece of code causes a compilation error. Identify the line in which it occurs, and the reason for the error.
1. class Mammal{
2. void feedMilk()throws Exception {throw new Exception();}
3. }
4. class Bat extends Mammal {
5. void feedMilk(){ System.out.println("Bat"); }
6. }
7. public class MyMain{
8. public static void main(String[] args){
9. Mammal mammal = new Bat();
10. mammal.feedMilk();
11. }
12. } |
9 | Which of the following code fragments might not cause StackOverFlowError? |
10 | public class SysProp {
public static void main(String[] args){
String sysProperty = System.getProperty("prop");
System.out.println(sysProperty);
}
}
What is the command with the system property option to run the above code producing the output: "scjp"?
|
