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Hi, I have the following java class:
class Outer { private Integer a; private Long b; class Inner { public void foo() { System.out.println("a and b are " + a + " " + b); } } }
when I run javap on Outer and Outer$Inner, I get the following:
C:\test>...
Started by shrini1000 on
, 3 posts
by 3 people.
Answer Snippets (Read the full thread at stackoverflow):
If it wasn't final technically it could be modified after instantiation... .
This is implemented as a final reference to the outer class.
Non-static inner classes have an implicit reference to an instance of the outer class.
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Can we create the object of inner class in the constructor of outer class?
Started by kitty ahuja on
, 4 posts
by 4 people.
Answer Snippets (Read the full thread at stackoverflow):
Public class Outer { public Outer() { Inner inner = new Inner(); } class Inner { } }
....
class Inner(){ //code } public class Outer(){ Inner foo; public Outer() { this.foo = new Inner(); } }
Sure.
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I am befuddled why this is allowed
public class Foo { class Bar extends Foo { } }
Yet this is not allowed
public class Foo { class Bar extends Foo { } class Fooey extends Bar { } }
The compiler informed that it can not reference Fooey.this before supertype...
Started by sal on
, 4 posts
by 4 people.
Answer Snippets (Read the full thread at stackoverflow):
Tom Hawtin answer is correctI guess the JLS and the answers to this question are a starting point
Java inner class and static nested class....
An inner class extend its own outer class, or extend any inner class.
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If I have an instance of an inner class, how can I access the outer class from code that is not in the inner class ? I know that within the inner class, I can use Outer.this to get the outer class, but I can't find any external way of getting this.
For...
Started by Kip on
, 7 posts
by 7 people.
Answer Snippets (Read the full thread at stackoverflow):
The bytecode of the Outer$Inner class will contain like when using ....
If you need to access the outer class through an instance of the inner the outer class, or through an interface.
There is no way, by design.
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I have a class as follows:
private class LanePair { public int cameraNumber; public Nest nest1, nest2; public LanePairStatus status = LanePairStatus.TIMER_OFF; Timer timer = new Timer(); public LanePair(int cameraNunber, Nest nest1, Nest nest2) { this...
Started by FallSe7en on
, 6 posts
by 6 people.
Answer Snippets (Read the full thread at stackoverflow):
But your anonymous class can't exist wihtout an instance of LanePair , that instance is referenced java.util.TimerTask; public class Test { public void doAskForLaneClear(LanePair lanePair){ //Action of lanePair } private class....
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I'm using a static analyzer in Eclipse to examine my code. One class, foo, has an inner class, bar. I am getting the following error:
JAVA0043 Inner class 'bar' does not use outer class 'foo'
Why is this an error? As long as the outer class uses the inner...
Answer Snippets (Read the full thread at stackoverflow):
The....
I suspect that's the reason for the "error".
Since it isn't dependent on the outer class, it can stand on its own.
If it's not making any reference to the outer class, it might as well be a full-on, regular class.
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I have the following code. I want to get hold of the outer class object using which I created the inner class object inner . How can I do it?
public class OuterClass { public class InnerClass { private String name = "Peakit"; } public static void main...
Started by peakit on
, 5 posts
by 5 people.
Answer Snippets (Read the full thread at stackoverflow):
OuterClass.this references the outer class the fundamental concepts....
It looks like the field holding the reference to the outer class has package level access - at least or, rarely, to access preexisting names on legacy systems.
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I have a situation like so...
class Outer(object): def some_method(self): # do something class Inner(object): def __init__(self): self.Outer.some_method() # <-- this is the line in question
How can I access the Outer class's method from the Inner class...
Started by T. Stone on
, 3 posts
by 3 people.
Answer Snippets (Read the full thread at stackoverflow):
For example....
Note that it is not necessarily the case that an instance of the outer class exists even when you have it will.
The methods of a nested class cannot directly access the instance attributes of the outer class.
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I observed that Outer classes can access inner classes private instance variables. How is this possible? A sample code demonstrating the same is explained below::
class ABC{ class XYZ{ private int x=10; } public static void main(String... args){ ABC.XYZ...
Started by Harish on
, 6 posts
by 6 people.
Answer Snippets (Read the full thread at stackoverflow):
Even though it's in a separate class....
class is just a way to cleanly separate some functionality that really belongs to the original outer outer class would be most clear if it was implemented in a separate class.
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Hi
I have the following class structure
public class Outer{ private Mapper a; .... private class MapperA implements Mapper { } private class MapperB implements Mapper { } }
In my Spring config file I would like to create a an Outer bean, and assign one...
Started by darren on
, 4 posts
by 4 people.
Answer Snippets (Read the full thread at stackoverflow):
Constructor-arg .../> :
<bean id="outer" class="mypackage.Outer"> <property name = "a"> <bean class = "mypackage.Outer.MapperA"> <constructor-arg ref = "outer" /> </bean>Normally you'd need ....
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