Getting rid of JFrame (big memory leak)

Hi,
I have an app that has a main frame with a button. When you press the button another JFrame is created. When you close this JFrame it is not garbage collected becauses references to it are held by some swing internals and also, it appears, by all listeners that have been registered. Is there any way of getting rid of these references so I can recover the memory? This is causing a huge memory leak and the app eventually dies......
Thanks
Simon

Don't know if you are using kunststoff laf and a 1.4 jvm, but kunststoff has a mem leak when using toolbars.
I sent a mail in August 2002 to them, but it seems no bugfix release is coming out.
Copy of the relevant part of the mail:
While looking for a memory leak (JFrames not being garbage collected), I noticed a bug in the kunststoff 2.0.1 laf:
The KunststoffToolBarUI class is a singleton, but the base MetalToolBarUI class is not (at least in jdk 1.4, I haven't looked at earlier versions).
The MetalToolBarUI has several hashtables containing ui components, and the static reference in KunststoffToolBarUI is preventing the components in this hashtables from being garbage collected.
After changing KunststoffToolBarUI.createUi to always return a new instance of KunststoffToolBarUI the memory leak disappears and the JFrame's are garbage collected.

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I Don't know if this is the place to post this, and if not please correct me.
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Last edited by aliasbody (2011-07-07 18:33:56)

Leonid.I wrote:
aliasbody wrote:
I'm sorry, I'm not making myself clear - my problem isn't the usage of Swap itself. I know that when RAM reaches its maximum, it uses Swap. I know that. And that's not what I'm "complaining" about.
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In your atom netbook you have only 3mb in swap... this can not be the cause of a slowdown.
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We really do like sql developer as a tool and has been execeding helpful and useful as our development tool.
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I am looking forward to trying the modeling tool soon.
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2562 ==25482== by 0x4563C5B: DbXml::Optimizer::startOptimize(XQQuery*) (Optimizer.cpp:39)
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2576 ==25482== by 0x44A766C: DbXml::Manager::initialize(DbEnv*) (Manager.cpp:167)
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2580 ==25482== by 0x8337407: XdbImpl::start(char const*, int) (XdbImpl.cpp:159)
2581 ==25482== by 0x8321123: Xdb::start(char const*, int) (Xdb.cpp:56)
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PS : We are trying to upgrade to 2.5.16 but there are certain issues already reported in another thread due to which we are not able to migrate.

Have you tried turning on diagnostic logging in BDBXML and trying to parse the output? The library gives out some pretty detailed output. It might be helpful to see what the query optimizer is trying to do, as well as see what the XQuery looks like that you're running, to see if we can either pinpoint the bug or find a suitable workaround that doesn't trigger the memory leak.

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