how to get class name from an interface with multiple implementations in java
I have the following interface
Interface fooBar extends Foo {}
few classes implementing them
class A implements fooBar {}
class B implements fooBar {}
class C implements fooBar {}
Now in one of the methods I have the following
Foo dummy = someMethod.getIt();
I want to know what type dummy is; is it A, B, C
I tried dummy.getClass().getSimpleName() and that it did not give any of the three but a random string "AndFunction"
I can do instanceOf check for each of A, B, C. That becomes ugly when I have more implementations.
P.S. I have simplified some code which I am trying to debug using debugger in IntelliJ. This is pretty big legacy app with spring beans created and injected during runtime.
java
asked Nov 12 at 18:38
brain storm
10.1k32138259
add a comment |
I have the following interface
Interface fooBar extends Foo {}
few classes implementing them
class A implements fooBar {}
class B implements fooBar {}
class C implements fooBar {}
Now in one of the methods I have the following
Foo dummy = someMethod.getIt();
I want to know what type dummy is; is it A, B, C
I tried dummy.getClass().getSimpleName() and that it did not give any of the three but a random string "AndFunction"
I can do instanceOf check for each of A, B, C. That becomes ugly when I have more implementations.
P.S. I have simplified some code which I am trying to debug using debugger in IntelliJ. This is pretty big legacy app with spring beans created and injected during runtime.
java
asked Nov 12 at 18:38
brain storm
10.1k32138259
3
"it did not give any of the three" - What did it give you?
– Jacob G.
Nov 12 at 18:42
2
Instead of instanceof, you should use polymorphism, however, this is hard if you can't refactor the code.
– Peter Lawrey
Nov 12 at 18:42
1
That name might have been auto-generated (ifsomeMethod.getIt()returned a proxy). You can examine the interfaces and/or the superclass ofdummy.getClass()to figure out what it really is.
– Andrew Tobilko
Nov 12 at 19:01
@AndrewTobilko how?
– brain storm
Nov 12 at 19:19
@brainstorm debug the contents ofdummy.getClass()
– Andrew Tobilko
Nov 12 at 21:07
add a comment |
I have the following interface
Interface fooBar extends Foo {}
few classes implementing them
class A implements fooBar {}
class B implements fooBar {}
class C implements fooBar {}
Now in one of the methods I have the following
Foo dummy = someMethod.getIt();
I want to know what type dummy is; is it A, B, C
I tried dummy.getClass().getSimpleName() and that it did not give any of the three but a random string "AndFunction"
I can do instanceOf check for each of A, B, C. That becomes ugly when I have more implementations.
P.S. I have simplified some code which I am trying to debug using debugger in IntelliJ. This is pretty big legacy app with spring beans created and injected during runtime.
java
asked Nov 12 at 18:38
brain storm
10.1k32138259
I have the following interface
Interface fooBar extends Foo {}
few classes implementing them
class A implements fooBar {}
class B implements fooBar {}
class C implements fooBar {}
Now in one of the methods I have the following
Foo dummy = someMethod.getIt();
I want to know what type dummy is; is it A, B, C
I tried dummy.getClass().getSimpleName() and that it did not give any of the three but a random string "AndFunction"
I can do instanceOf check for each of A, B, C. That becomes ugly when I have more implementations.
P.S. I have simplified some code which I am trying to debug using debugger in IntelliJ. This is pretty big legacy app with spring beans created and injected during runtime.
java
java
asked Nov 12 at 18:38
brain storm
10.1k32138259
asked Nov 12 at 18:38
brain storm
10.1k32138259
edited Nov 12 at 18:49
asked Nov 12 at 18:38
brain storm
10.1k32138259
asked Nov 12 at 18:38
brain storm
10.1k32138259
asked Nov 12 at 18:38
brain storm
10.1k32138259
10.1k32138259
3
"it did not give any of the three" - What did it give you?
– Jacob G.
Nov 12 at 18:42
2
Instead of instanceof, you should use polymorphism, however, this is hard if you can't refactor the code.
– Peter Lawrey
Nov 12 at 18:42
1
That name might have been auto-generated (ifsomeMethod.getIt()returned a proxy). You can examine the interfaces and/or the superclass ofdummy.getClass()to figure out what it really is.
– Andrew Tobilko
Nov 12 at 19:01
@AndrewTobilko how?
– brain storm
Nov 12 at 19:19
@brainstorm debug the contents ofdummy.getClass()
– Andrew Tobilko
Nov 12 at 21:07
add a comment |
3
"it did not give any of the three" - What did it give you?
– Jacob G.
Nov 12 at 18:42
2
Instead of instanceof, you should use polymorphism, however, this is hard if you can't refactor the code.
– Peter Lawrey
Nov 12 at 18:42
1
That name might have been auto-generated (ifsomeMethod.getIt()returned a proxy). You can examine the interfaces and/or the superclass ofdummy.getClass()to figure out what it really is.
– Andrew Tobilko
Nov 12 at 19:01
@AndrewTobilko how?
– brain storm
Nov 12 at 19:19
@brainstorm debug the contents ofdummy.getClass()
– Andrew Tobilko
Nov 12 at 21:07
3
3
"it did not give any of the three" - What did it give you?
– Jacob G.
Nov 12 at 18:42
"it did not give any of the three" - What did it give you?
– Jacob G.
Nov 12 at 18:42
2
2
Instead of instanceof, you should use polymorphism, however, this is hard if you can't refactor the code.
– Peter Lawrey
Nov 12 at 18:42
Instead of instanceof, you should use polymorphism, however, this is hard if you can't refactor the code.
– Peter Lawrey
Nov 12 at 18:42
1
1
That name might have been auto-generated (if
someMethod.getIt() returned a proxy). You can examine the interfaces and/or the superclass of dummy.getClass() to figure out what it really is.– Andrew Tobilko
Nov 12 at 19:01
That name might have been auto-generated (if
someMethod.getIt() returned a proxy). You can examine the interfaces and/or the superclass of dummy.getClass() to figure out what it really is.– Andrew Tobilko
Nov 12 at 19:01
@AndrewTobilko how?
– brain storm
Nov 12 at 19:19
@AndrewTobilko how?
– brain storm
Nov 12 at 19:19
@brainstorm debug the contents of
dummy.getClass()– Andrew Tobilko
Nov 12 at 21:07
@brainstorm debug the contents of
dummy.getClass()– Andrew Tobilko
Nov 12 at 21:07
add a comment |
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3
"it did not give any of the three" - What did it give you?
– Jacob G.
Nov 12 at 18:42
2
Instead of instanceof, you should use polymorphism, however, this is hard if you can't refactor the code.
– Peter Lawrey
Nov 12 at 18:42
1
That name might have been auto-generated (if
someMethod.getIt()returned a proxy). You can examine the interfaces and/or the superclass ofdummy.getClass()to figure out what it really is.– Andrew Tobilko
Nov 12 at 19:01
@AndrewTobilko how?
– brain storm
Nov 12 at 19:19
@brainstorm debug the contents of
dummy.getClass()– Andrew Tobilko
Nov 12 at 21:07