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java-programming/javaUpdates/src/oops/ShowRoom.java at master · 9146887137/java-programming · GitHub
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javaUpdates
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oops
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ShowRoom.java
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136 lines (108 loc) · 3.95 KB
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java-programming
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javaUpdates
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src
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oops
/
ShowRoom.java
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package
oops
;
public
final
class
ShowRoom
extends
Villager
{
/*
* i have one object called Showroom
* i represent real world object
* thats why we use some non static variables here which hold the information about object
*
* the memory alloacated for this variables object created inside heap area*/
//Encapsulation:
//we achive here data hiding process we call it as encapsulation
//we make all the members as private
/*
* private members cannot accessible outside the class but we dont want provide direct access
* that why we maked it as private
* after i want to provide indirect access
* so we use getters and setters according to accessibility
*/
private
String
name
;
private
String
location
;
private
int
pincode
;
private
String
owner
;
/*
* this is called has a relationship
* has a relationship means its association between two or more objects where one object is dependent on another object
* now look at this blueprint where Showroom is depend on Bike object
*
* in this way we can achieve has a relationship
* we create one dependency object reference variable inside dependent object
* and we can achieve this design in two way early binding and lazy binding
*
* early binding means the reference of dependency object must be created at the time of dependent object instance is created.'
* we can achieve this design with the help of non-static initializers.
*
* lazy binding means the reference of dependency object not created at the time of dependent object instance created.
* we can create instance of dependent object whenever we want with the help of helper method.
*/
private
Bike
bike
;
public
ShowRoom
() {
// TODO Auto-generated constructor stub
}
/*
* this is parameterized constructor
* the constructor with formal arguments we called it as Parameterized constructor
* the main work of constructor is load all the non static member and put inside the object memory
* and also initialize the value inside the object members with its default value.
* constructor is member which help me to create instance of class
*
* if we failed to add any constructor inside blueprint compiler add default constructor
* but we successfully add parameterized constructor there so compiler cannot add default costructor
*
* no argument and default are different
* */
public
ShowRoom
(
String
name
,
String
location
,
int
pincode
,
String
owner
) {
//super();
/*
* this is a keyword and non static reference variable which hold the current object reference which is currently under execution
* we can use it inside non-static block,non static method and constructor
* constructor also object member which help me to load all the object members inside heap memory */
this
.
name
=
name
;
this
.
location
=
location
;
this
.
pincode
=
pincode
;
this
.
owner
=
owner
;
}
/*
* we can overload the constructor if customizly initialize the value inside object member
* suppose 1 st bike have 3 features
* 2nd bike 4 features
* 3rd bike 5 features
* some are with 2 features
*
*in this way we can overload the constructor
* */
public
String
getName
() {
return
name
;
}
public
void
setName
(
String
name
) {
this
.
name
=
name
;
}
public
String
getLocation
() {
return
location
;
}
public
void
setLocation
(
String
location
) {
this
.
location
=
location
;
}
public
int
getPincode
() {
return
pincode
;
}
public
void
setPincode
(
int
pincode
) {
this
.
pincode
=
pincode
;
}
public
String
getOwner
() {
return
owner
;
}
public
void
setOwner
(
String
owner
) {
this
.
owner
=
owner
;
}
public
Bike
getBike
() {
return
bike
;
}
public
void
setBike
(
Bike
bike
) {
this
.
bike
=
bike
;
}
@
Override
public
String
toString
() {
return
"ShowRoom [name="
+
name
+
", location="
+
location
+
", pincode="
+
pincode
+
", owner="
+
owner
+
", bike="
+
bike
+
"]"
;
}
}
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