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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 openbravopos by cemolina
, 1 year ago
This exception has no message.
via maven-surefire-users by Hinkle, Cameron, 2 years ago
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via maven-surefire-users by Ben Hsu, 2 years ago
This exception has no message.
via Oracle Community by 9ec3f616-fce4-4a45-891c-de33eddc924e, 1 year ago
via Stack Overflow by Koen ten Katen
, 7 months ago
via Oracle Community by 807601, 7 months ago
This exception has no message.
java.lang.NullPointerException: 	at java.util.Hashtable.put(Hashtable.java:394)	at java.util.Properties.setProperty(Properties.java:143)	at com.openbravo.pos.forms.AppConfig.setProperty(AppConfig.java:78)	at com.openbravo.pos.config.JPanelConfigGeneral.saveProperties(JPanelConfigGeneral.java:367)	at com.openbravo.pos.config.JPanelConfiguration.saveProperties(JPanelConfiguration.java:92)	at com.openbravo.pos.config.JPanelConfiguration.deactivate(JPanelConfiguration.java:128)	at com.openbravo.pos.forms.JPrincipalApp.showTask(JPrincipalApp.java:329)	at com.openbravo.pos.forms.MenuPanelAction.actionPerformed(MenuPanelAction.java:45)	at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1995)	at org.jdesktop.swingx.JXHyperlink.fireActionPerformed(JXHyperlink.java:244)	at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2318)	at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:387)	at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:242)	at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:236)	at java.awt.Component.processMouseEvent(Component.java:6134)	at javax.swing.JComponent.processMouseEvent(JComponent.java:3265)	at java.awt.Component.processEvent(Component.java:5899)	at java.awt.Container.processEvent(Container.java:2023)	at java.awt.Component.dispatchEventImpl(Component.java:4501)	at java.awt.Container.dispatchEventImpl(Container.java:2081)	at java.awt.Component.dispatchEvent(Component.java:4331)	at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4301)	at java.awt.LightweightDispatcher.processMouseEvent(Container.java:3965)	at java.awt.LightweightDispatcher.dispatchEvent(Container.java:3895)	at java.awt.Container.dispatchEventImpl(Container.java:2067)	at java.awt.Window.dispatchEventImpl(Window.java:2458)	at java.awt.Component.dispatchEvent(Component.java:4331)	at java.awt.EventQueue.dispatchEvent(EventQueue.java:599)	at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:269)	at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:184)	at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:174)	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:169)	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:161)	at java.awt.EventDispatchThread.run(EventDispatchThread.java:122)