Why will the variable and an accessory method return two different things under Inheritance? [duplicate]
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Overriding member variables in Java
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Java inheritance fields [duplicate]
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Here are two classes
class FirstClass {
int x;
public FirstClass(int n){
x=n;
}
int getx(){
return x;
}
}
class SecondClass extends FirstClass {
int x;
public SecondClass(int n){
super(n*2);
x=n;
}
int getx(){
return x;
}
}
Yet if I do something like FirstClass obj = new SecondClass(5), obj.x is 10, and obj.getx() returns 5.
I'd either have expected getx() to be 5 and x to be 5, or getx() to be 10 and x to be 10. Why does the code work this way?
java inheritance
asked Nov 11 at 1:09
bleh
11539
marked as duplicate by Andreas java
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Nov 11 at 1:25
This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.
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up vote
0
down vote
favorite
This question already has an answer here:
Overriding member variables in Java
10 answers
Java inheritance fields [duplicate]
5 answers
Here are two classes
class FirstClass {
int x;
public FirstClass(int n){
x=n;
}
int getx(){
return x;
}
}
class SecondClass extends FirstClass {
int x;
public SecondClass(int n){
super(n*2);
x=n;
}
int getx(){
return x;
}
}
Yet if I do something like FirstClass obj = new SecondClass(5), obj.x is 10, and obj.getx() returns 5.
I'd either have expected getx() to be 5 and x to be 5, or getx() to be 10 and x to be 10. Why does the code work this way?
java inheritance
asked Nov 11 at 1:09
bleh
11539
marked as duplicate by Andreas java
Users with the java badge can single-handedly close java questions as duplicates and reopen them as needed.
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Nov 11 at 1:25
This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.
Fields are not polymoprhic, only methods are (with exception ofprivate,staticorfinalones)
– Pshemo
Nov 11 at 1:19
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up vote
0
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favorite
up vote
0
down vote
favorite
This question already has an answer here:
Overriding member variables in Java
10 answers
Java inheritance fields [duplicate]
5 answers
Here are two classes
class FirstClass {
int x;
public FirstClass(int n){
x=n;
}
int getx(){
return x;
}
}
class SecondClass extends FirstClass {
int x;
public SecondClass(int n){
super(n*2);
x=n;
}
int getx(){
return x;
}
}
Yet if I do something like FirstClass obj = new SecondClass(5), obj.x is 10, and obj.getx() returns 5.
I'd either have expected getx() to be 5 and x to be 5, or getx() to be 10 and x to be 10. Why does the code work this way?
java inheritance
asked Nov 11 at 1:09
bleh
11539
This question already has an answer here:
Overriding member variables in Java
10 answers
Java inheritance fields [duplicate]
5 answers
Here are two classes
class FirstClass {
int x;
public FirstClass(int n){
x=n;
}
int getx(){
return x;
}
}
class SecondClass extends FirstClass {
int x;
public SecondClass(int n){
super(n*2);
x=n;
}
int getx(){
return x;
}
}
Yet if I do something like FirstClass obj = new SecondClass(5), obj.x is 10, and obj.getx() returns 5.
I'd either have expected getx() to be 5 and x to be 5, or getx() to be 10 and x to be 10. Why does the code work this way?
This question already has an answer here:
Overriding member variables in Java
10 answers
Java inheritance fields [duplicate]
5 answers
java inheritance
java inheritance
asked Nov 11 at 1:09
bleh
11539
asked Nov 11 at 1:09
bleh
11539
asked Nov 11 at 1:09
bleh
11539
asked Nov 11 at 1:09
bleh
11539
asked Nov 11 at 1:09
bleh
11539
11539
marked as duplicate by Andreas java
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Nov 11 at 1:25
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Nov 11 at 1:25
This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.
Fields are not polymoprhic, only methods are (with exception ofprivate,staticorfinalones)
– Pshemo
Nov 11 at 1:19
add a comment |
Fields are not polymoprhic, only methods are (with exception ofprivate,staticorfinalones)
– Pshemo
Nov 11 at 1:19
Fields are not polymoprhic, only methods are (with exception of
private, static or final ones)– Pshemo
Nov 11 at 1:19
Fields are not polymoprhic, only methods are (with exception of
private, static or final ones)– Pshemo
Nov 11 at 1:19
add a comment |
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Fields are not polymoprhic, only methods are (with exception of
private,staticorfinalones)– Pshemo
Nov 11 at 1:19