Instance Initialization block (IIB)

1. Program

//Find what it gives Compiletion Error / Compiletion Successfully / Output ? 
class A
{ 
 A()
 {
  System.out.println("A()");
 }
 
 {
  System.out.println("I am IIB");
 }
 
 A(int i)
 {
  System.out.println("A(int)");
 }
 public static void main(String[] args)
 {
  A a1 =  new A();
  System.out.println("------");    
  A a2 =  new A(10);
  System.out.println("------");

 }
}

---

2. Program

//Find what it gives Compiletion Error / Compiletion Successfully / Output ? 
class B
{ 
 B()
 {
  System.out.println("B()");
 }
 
 {
  System.out.println("This is IIB");
 }
 
 public static void main(String[] args)
 {
  B b1 =  new B();
  System.out.println("------");    
  B b2 =  new B();
  System.out.println("------");

 }
}

---

3. Program

//Find what it gives Compiletion Error / Compiletion Successfully / Output ? 
class C
{ 
 C()
 {
  System.out.println("C()");
 }
 
 C(int i)
 {
  System.out.println("C(int)");
 }
 
 public static void main(String[] args)
 {
  C c1 =  new C();
  System.out.println("------");    
  C c2 =  new C(10);
  System.out.println("------");

 }
 
 {
  System.out.println("IIB Calling");
 }
 
}

---

4. Program

//Find what it gives Compiletion Error / Compiletion Successfully / Output ? 
class D
{ 
 D()
 {
  System.out.println("D()");
 }
 {
  System.out.println("IIB First");
 }
 
 {
  System.out.println("IIB Second");
 }
 
 public static void main(String[] args)
 {
  D d1 =  new D();
  System.out.println("------");    
  D d2 =  new D();
  System.out.println("------");

 }
}

---

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