Wrapper Classes

26. Program

//Find what it gives Compiletion Error / Compiletion Successfully / Output ?
class M27
{
 static void test(Integer obj)
 {
  System.out.println("done");
 }
 
 public static void main(String[] args)
 {
  
  test(10);
   //test (new Integer(10)); done by compiler
 
 }
}

---

27. Program

//Find what it gives Compiletion Error / Compiletion Successfully / Output ?
class M28
{
 static void test(int i)
 {
  System.out.println("done");
 }
 
 public static void main(String[] args)
 {
  
  Integer obj = new Integer(10);
  test(obj); // test(obj.intValue()); DOne by Compiler
      
 }
}

---

28. Program

//Find what it gives Compiletion Error / Compiletion Successfully / Output ?
class M29
{
 static void test(int j)
 {
  System.out.println("done");
 }
 
 public static void main(String[] args)
 {
  
  Integer obj = new Integer(90);
  test(obj.intValue());
     
 }
}

---

29. Program

//Find what it gives Compiletion Error / Compiletion Successfully / Output ?
class M30
{
 public static void main(String[] args)
 {
  Double d1 = new Double(30); 
  double d2 = 90;
  test(d1);
  test(new Double(d2));
 }
 
 static void test(Double obj)
 {
  System.out.println("done");
 }

}

---

30. Program

//Find what it gives Compiletion Error / Compiletion Successfully / Output ?
class M31
{
 public static void main(String[] args)
 {
  test('a');
  char c1 = 't';
  test(c1);
  Character c2 = 'p';
  test(c2);
 }
 
 static void test(Character obj)
 {
  System.out.println("done");
 }

}

---

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