// COBOL Programmers Swing With Java - copyright 2005 Doke, Hardgrave, & Johnson
// Chapter 5 - Computation
// Program to demonstrate Data Type Class Methods
// WrapperDemo.java 1 JAN 05

public class WrapperDemo
{
    public static void main(String args[])
    {
    // create & display instances of Double, Float, Integer, and Long
    Double aDouble = new Double(123.456);
    Float aFloat = new Float(123.456F);
    Integer anInteger = new Integer (123);
    Long aLong = new Long(123456);
    System.out.println("aDouble =" + aDouble);
    System.out.println("aFloat =" + aFloat);
    System.out.println("anIteger =" + anInteger);
    System.out.println("aLong =" + aLong);

    // convert numeric to String & disply
    String aStringFromDouble = new String(Double.toString(aDouble.doubleValue()));
    String aStringFromFloat = new String(Float.toString(aFloat.floatValue()));
    String aStringFromInteger = new String(Integer.toString(anInteger.intValue()));
    String aStringFromLong = new String(Long.toString(aLong.longValue()));
    System.out.println("aStringFromDouble =" + aStringFromDouble);
    System.out.println("aStringFromFloat =" + aStringFromFloat);
    System.out.println("aStringFromInteger =" + aStringFromInteger);
    System.out.println("aStringFromLong =" + aStringFromLong);

    // convert String to numeric & display
    Double aDoubleFromString = Double.valueOf(aStringFromDouble);
    Float aFloatFromString = Float.valueOf(aStringFromFloat);
    Integer anIntegerFromString = Integer.valueOf(aStringFromInteger);
    Long aLongFromString = Long.valueOf(aStringFromLong);
    System.out.println("aDoubleFromString =" + aDoubleFromString);
    System.out.println("aFloatFromString =" + aFloatFromString);
    System.out.println("anIntegerFromString =" + anIntegerFromString);
    System.out.println("aLongFromString =" + aLongFromString);

    // do arithmetic with instances using instance methods
    double d = aDouble.doubleValue() + aDoubleFromString.doubleValue();
    System.out.println("d =" + d);
    float f = aFloat.floatValue() + aFloatFromString.floatValue();
    System.out.println("f =" + f);
    int i = anInteger.intValue() + anIntegerFromString.intValue();
    System.out.println("i =" + i);
    long l = aLong.longValue() + aLongFromString.longValue();
    System.out.println("l =" + l);
   } // end main
} // end WrapperDemo.java