java.lang.NullPointerException: This exception has no message.

Searched on Google with the first line of a JAVA stack trace?

We can recommend more relevant solutions and speed up debugging when you paste your entire stack trace with the exception message. Try a sample exception.

Recommended solutions based on your search

Solutions on the web

via Coderanch by Vazzdoin Rocko, 1 year ago
This exception has no message.
java.lang.NullPointerException:
at test.piano.mousePressed(piano.java:69)
at java.awt.AWTEventMulticaster.mousePressed(AWTEventMulticaster.java:280)
at java.awt.Component.processMouseEvent(Component.java:6104)
at javax.swing.JComponent.processMouseEvent(JComponent.java:3287)
at java.awt.Component.processEvent(Component.java:5872)
at java.awt.Container.processEvent(Container.java:2101)
at java.awt.Component.dispatchEventImpl(Component.java:4467)
at java.awt.Container.dispatchEventImpl(Container.java:2159)
at java.awt.Component.dispatchEvent(Component.java:4293)
at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4578)
at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4238)
at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4171)
at java.awt.Container.dispatchEventImpl(Container.java:2145)
at java.awt.Window.dispatchEventImpl(Window.java:2559)
at java.awt.Component.dispatchEvent(Component.java:4293)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:604)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:275)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:200)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:190)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:185)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:177)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:138)

Users with the same issue

You are the first who have seen this exception. Write a tip to help other users and build your expert profile.

Know the solutions? Share your knowledge to help other developers to debug faster.