activation-api-1.1/src/main/java/javax/activation/DataHandler.java [232:253]:
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    private synchronized DataContentHandler getDataContentHandler() {
        DataContentHandlerFactory localFactory;
        synchronized (DataHandler.class) {
            if (factory != originalFactory) {
                // setDCHF was called - clear our cached copy of the DCH and DCHF
                dch = null;
                originalFactory = factory;
            }
            localFactory = originalFactory;
        }
        if (dch == null) {
            // get the main mime-type portion of the content.
            String mimeType = getMimeType(ds.getContentType());
            if (localFactory != null) {
                dch = localFactory.createDataContentHandler(mimeType);
            }
            if (dch == null) {
                dch = getCommandMap().createDataContentHandler(mimeType);
            }
        }
        return dch;
    }
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activation-api-1.2.1/src/main/java/javax/activation/DataHandler.java [232:253]:
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    private synchronized DataContentHandler getDataContentHandler() {
        DataContentHandlerFactory localFactory;
        synchronized (DataHandler.class) {
            if (factory != originalFactory) {
                // setDCHF was called - clear our cached copy of the DCH and DCHF
                dch = null;
                originalFactory = factory;
            }
            localFactory = originalFactory;
        }
        if (dch == null) {
            // get the main mime-type portion of the content.
            String mimeType = getMimeType(ds.getContentType());
            if (localFactory != null) {
                dch = localFactory.createDataContentHandler(mimeType);
            }
            if (dch == null) {
                dch = getCommandMap().createDataContentHandler(mimeType);
            }
        }
        return dch;
    }
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