Using Java Using Java - AS Nida

Enum: A Special Kind of Class
Enum can have constructors, methods, and
variables
enum enum
enum enum
Size Size {
{
SMALL(15), SMALL(15),
SMALL(15), SMALL(15),
MEDIUM(18), MEDIUM(18),
MEDIUM(18), MEDIUM(18),
LARGE(20), LARGE(20), LARGE(20),
LARGE(20), LARGE(20),
EXTRA_LARGE(25)
EXTRA_LARGE(25)
EXTRA_LARGE(25)
EXTRA_LARGE(25)
EXTRA_LARGE(25)
private private
private private
int int length; length;
length;
Size(int Size(int
Size(int Size(int
length) length) length) {
{
this.length this.length
this.length this.length
= = length; length;
length;
}
}
public public
public public
int int getLength
getLength() getLength
getLength
getLength() getLength
() () {
{
return return
return return return
length;
length;
length;
length;
}
}
}
}
Copyright © 2006 Pramote Kuacharoen – All rights reserved.
public public
public public
class class
class class
Shirt Shirt
Shirt Shirt
{
{
{
{
private private
private private
Size Size
Size Size
size;
size;
size;
size;
The enum Constructors
public public
public public
static static
static static
void void
void void
main(String
main(String[]
main(String
main(String
main(String[]
main(String
[] [] args args {
{
Shirt Shirt
Shirt Shirt
shirt shirt = = new new Shirt();
Shirt();
shirt.size
shirt.size shirt.size
shirt.size shirt.size
= = = Shirt.Size.MEDIUM
Shirt.Size.MEDIUM;
Shirt.Size.MEDIUM
Shirt.Size.MEDIUM
Shirt.Size.MEDIUM;
Shirt.Size.MEDIUM
System.out.println(shirt.size.getLength
System.out.println(shirt.size.getLength();
System.out.println(shirt.size.getLength
System.out.println(shirt.size.getLength
System.out.println(shirt.size.getLength();
System.out.println(shirt.size.getLength
();
();
}
}
}
}
The enum constructors are invoked automatically,
with the arguments defined after the constant value
The enum constructors can have many arguments
The enum constructors can be overloaded
The enum constructors can be define as anonymous
inner class
Copyright © 2006 Pramote Kuacharoen – All rights reserved.
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