From 1367c999fa2c828ebf1bc0c01ace391ecf442fbb Mon Sep 17 00:00:00 2001
From: gmungoc <g.m.carstairs@dundee.ac.uk>
Date: Tue, 18 Dec 2018 18:06:41 +0000
Subject: [PATCH] JAL-3048 fix NPE in file chooser callbacks map

---
 src/jalview/io/JalviewFileChooser.java |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/jalview/io/JalviewFileChooser.java b/src/jalview/io/JalviewFileChooser.java
index 7909d0c..88a337a 100755
--- a/src/jalview/io/JalviewFileChooser.java
+++ b/src/jalview/io/JalviewFileChooser.java
@@ -37,6 +37,7 @@ import java.beans.PropertyChangeEvent;
 import java.beans.PropertyChangeListener;
 import java.io.File;
 import java.util.ArrayList;
+import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
 import java.util.StringTokenizer;
@@ -64,7 +65,7 @@ public class JalviewFileChooser extends JFileChooser implements DialogRunnerI,
 {
   private static final long serialVersionUID = 1L;
 
-  private Map<Object, Runnable> callbacks;
+  private Map<Object, Runnable> callbacks = new HashMap<>();
   
   File selectedFile = null;
 
-- 
1.7.10.2