CODEWITHSUNDEEP
groovynullpointerexception
AdjustingForInflation
AdjustingForInflation

Reputation: 1611

NullPointerException when calling a method on another Groovy class

I have the following two Groovy classes:

Buzz.groovy:

import widgets.Fizz

class Buzz {

    def WhistleFeather

    def init = { servletContext ->
        WhistleFeather.load()
        println "WhistleFeather loaded."
    }

    def destroy = { }
}

WhistleFeather.groovy:

package net.me.myapp

import widgets.Fizz

public class WhistleFeather {

    def navMenu

    def load() {        
        println "Loading!"
    }
}

When execution gets to the WhistleFeather.load() method call I'm getting a NullPointerException. Can anyone see why?

Upvotes: 0

Views: 322

Answers (1)

Peter Niederwieser
Peter Niederwieser

Reputation: 123986

WhistleFeather#load is an instance method, not a static method. Either call it with new WhistleFeather().load(), or turn it into a static method (static load() { ... }).

Upvotes: 1

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