/*
  Author  : Michael Robinson
  Program : wrappersClass .java
  Purpose : To present how to use the wrappers and some
            of their classes.
            Java creates wrapper classes for all primitives:

            Primitive  Wrapper
            byte       Byte
            short      Short
            int        Integer
            long       Long
            float      Float 
            double     Double 
            char       Character 
            boolean    Boolean
             
             
            Integer   -> int
            Float     -> float
            Double    -> double
            Character -> char
            Boolean   -> boolean        
             
            Wrappers have many methods,and some allows us to 
            UN-WRAP it values, for example an Integer wrapper
            can become a primitive int

  Updated : April 26, 2099
*/     


public class wrappersClass 
{
    public static void main(String arg[])
    {
        int number = 10;             //regular primitive int
        Integer wNumber = 5;         //wrapper Integer class
        String stringNumber = "123"; //numbers as string
	
	//print the float value of an Integer wrapper	
        System.out.println(
          "float value of Integer wrapper wNumber 5 = " + 
          wNumber.floatValue());
		
        //we can add int and Integer
        System.out.println( 
          "Adding int number 10 + wrapper wNumber 5 = "  + 
          ( number + wNumber ) );
		
        //convert a String into an int and then print both
        number = Integer.parseInt(stringNumber); 
        System.out.printf(
          "String %s converted to Integer %d\n", 
          stringNumber, number );
		
	//convert an int into an object Integer and then print both	
        Integer wNumber2 = new Integer(number); 
        System.out.printf( "Convert int number %d into Integer " + 
                           "wNumner2 %d\n", number,  wNumber2 );
		
        //convert Integer into an int and then print both 
        int temp = wNumber2;
        System.out.printf( "Convert Integer wNumber %d into " + 
                           " int temp %d\n", wNumber2, temp );
		
    }//end public static void main(String arg[])
    
}//end public class wrappersClass