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    Thrown when an application is trying to use or access an object whose reference equals to null. You are probably trying to use a reference that points to no location in memory as though it were referencing an object.

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via Oracle Community by 807555, 1 year ago
This exception has no message.
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, 2 years ago
This exception has no message.
via Oracle Community by tkjain, 1 year ago
via Oracle Community by 615670, 2 years ago
This exception has no message.
java.lang.NullPointerException at java.util.Hashtable.put(Hashtable.java:380) at javax.swing.plaf.basic.BasicToolBarUI.setBorderToNonRollover(BasicToolBarUI.java:620) at javax.swing.plaf.basic.BasicToolBarUI$ToolBarContListener.componentAdded(BasicToolBarUI.java:1004) at java.awt.Container.processContainerEvent(Container.java:1355) at java.awt.Container.processEvent(Container.java:1334) at java.awt.Component.dispatchEventImpl(Component.java:3476) at java.awt.Container.dispatchEventImpl(Container.java:1399) at java.awt.Component.dispatchEvent(Component.java:3343) at java.awt.Container.addImpl(Container.java:502) at javax.swing.JToolBar.addImpl(JToolBar.java:536) at java.awt.Container.add(Container.java:368) at com.temenos.devstudio.EditorUI.jbInit(EditorUI.java:638) at com.temenos.devstudio.EditorUI.<init>(EditorUI.java:153) at com.temenos.devstudio.Editor.<init>(Editor.java:57) at com.temenos.devstudio.Editor.main(Editor.java:85)