Final Keyword

15. Program

//Find what it gives Compiletion Error / Compiletion Successfully / Output ? 
class O
{
 final int i = 10;
 public static void main(String[] args)
 {
  O o1 = new O();
  o1.i = 10;
  System.out.println("done");
 }
}

---

16. Program

//Find what it gives Compiletion Error / Compiletion Successfully / Output ? 
class P
{
 int i = 100;
 public static void main(String[] args)
 {
  final P p1 = new P();
  p1.i = 50;
  System.out.println("done");
 }
}

---

17. Program

//Find what it gives Compiletion Error / Compiletion Successfully / Output ? 
class Q
{
 final int i = 10;
 void test()
 {
  i = 10;
 }
}

---

18. Program

//Find what it gives Compiletion Error / Compiletion Successfully / Output ? 
class R
{
 final int i = 10;
 R()
 {
  i = 10;
  System.out.println(i);
  System.out.println("Done");
 }
}

---

19. Program

//Find what it gives Compiletion Error / Compiletion Successfully / Output ? 
class S
{
 final int i = 10;
 
 {
  i = 10;
 }
 
 public static void main(String[] args)
 {
  System.out.println(i);
 }
}

---

20. Program

//Find what it gives Compiletion Error / Compiletion Successfully / Output ? 
class T
{
 final int i;
 //final variable must be initialized. 
}

---

21. Program

//Find what it gives Compiletion Error / Compiletion Successfully / Output ? 
class U
{
 final int i = 0;

}

---

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