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School lab: I am getting an error and cannot figure out why

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Error I am getting
1 error found:
File: C:\Users\John\Desktop\Java\  [line: 5]
Error: JWlab39 is not abstract and does not override abstract method keyReleased(java.awt.event.KeyEvent) in java.awt.event.KeyListener
Please let me know what is wrong so I can fix it

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I suggest using the "@Override" annotation over all methods that you are overriding. The incorrect method name would pop up like a sore thumb during compilation.
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