The last statement inside main(String []) method, increments value of i, which means it is not effectively final and hence compilation error.
//Test.java
package com.udayan.ocp;
class Player {
String name;
int age;
Player() {
this.name = "Virat";
this.age = 29;
}
public int hashCode() {
return 100;
}
}
public class Test {
public static void main(String[] args) {
System.out.println(new Player());
}
}
Hexadecimal representation of 100 is 64.
Which of the following option is correct?
What will be the result of compiling and executing class M?
1. package com.udayan.ocp;
2.
3. class M {
4. private int num1 = 100;
5. class N {
6. private int num2 = 200;
7. }
8.
9. public static void main(String[] args) {
10. M outer = new M();
11. M.N inner = outer.new N();
12. System.out.println(outer.num1 + inner.num2);
13. }
14. }
Below is the code of Test.java file:
1. package com.udayan.ocp;
2.
3. class Outer {
4. static class Inner {
5. static void greetings(String s) {
6. System.out.println(s);
7. }
8. }
9. }
10.
11. public class Test {
12. public static void main(String[] args) {
13. /*INSERT*/
14. }
15. }
Which of the following 2 options can replace /*INSERT*/ such that there on executing class Test, output is: HELLO!?
Given code of Test.java file:
1. package com.udayan.ocp;
2.
3. import java.util.ArrayDeque;
4. import java.util.Deque;
5.
6. public class Test {
7. public static void main(String[] args) {
8. Deque
9. deque.push(new Boolean("abc"));
10. deque.push(new Boolean("tRuE"));
11. deque.push(new Boolean("FALSE"));
12. deque.push(true);
13. System.out.println(deque.pop() + ":" + deque.peek() + ":" + deque.size());
14. }
15. }
What will be the result of compiling and executing Test class?
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