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OnJava8-Examples/polymorphism/Sandwich.java at master · CSapprenticeWT/OnJava8-Examples · GitHub
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// polymorphism/Sandwich.java
// (c)2021 MindView LLC: see Copyright.txt
// We make no guarantees that this code is fit for any purpose.
// Visit http://OnJava8.com for more book information.
// Order of constructor calls
// {java polymorphism.Sandwich}
package
polymorphism
;
class
Meal
{
Meal
() {
System
.
out
.
println
(
"Meal()"
); }
}
class
Bread
{
Bread
() {
System
.
out
.
println
(
"Bread()"
); }
}
class
Cheese
{
Cheese
() {
System
.
out
.
println
(
"Cheese()"
); }
}
class
Lettuce
{
Lettuce
() {
System
.
out
.
println
(
"Lettuce()"
); }
}
class
Lunch
extends
Meal
{
Lunch
() {
System
.
out
.
println
(
"Lunch()"
); }
}
class
PortableLunch
extends
Lunch
{
PortableLunch
() {
System
.
out
.
println
(
"PortableLunch()"
);
}
}
public
class
Sandwich
extends
PortableLunch
{
private
Bread
b
=
new
Bread
();
private
Cheese
c
=
new
Cheese
();
private
Lettuce
l
=
new
Lettuce
();
public
Sandwich
() {
System
.
out
.
println
(
"Sandwich()"
);
}
public
static
void
main
(
String
[]
args
) {
new
Sandwich
();
}
}
/* Output:
Meal()
Lunch()
PortableLunch()
Bread()
Cheese()
Lettuce()
Sandwich()
*/
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