NullPointerException error creating a network

Issue #159 resolved
Miguel Ángel Artaso Landa created an issue

When the org.openmarkov.full is launched and you try to create a network, an exception is fired.

Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException at org.openmarkov.core.gui.dialog.network.NetworkDefinitionPanel.getCheckBoxShowCommentOnOpening(NetworkDefinitionPanel.java:284) [...] The lines 284 of the class org.openmarkov.core.gui.dialog.network.NetworkDefinitionPanel is:

jcheckBoxShowCommentOnOpening.setSelected(probNet.getShowCommentWhenOpening());

And when the network is being created, probNet is still null at this point. So, by analogy with other lines of the class, it could be rewritten as follows:

jcheckBoxShowCommentOnOpening.setSelected(probNet != null && probNet.getShowCommentWhenOpening());

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