From 6e62251874be4829dedb958e8f2530f1a943d42c Mon Sep 17 00:00:00 2001
From: Frederic Suter <frederic.suter@cc.in2p3.fr>
Date: Tue, 31 May 2016 12:45:08 +0200
Subject: [PATCH] remove blocker in kademlia

---
 examples/java/dht/kademlia/Contact.java | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/examples/java/dht/kademlia/Contact.java b/examples/java/dht/kademlia/Contact.java
index b52dcfbc84..2c9658df5e 100644
--- a/examples/java/dht/kademlia/Contact.java
+++ b/examples/java/dht/kademlia/Contact.java
@@ -25,7 +25,15 @@ public class Contact implements Comparable<Object> {
 
   @Override
   public boolean equals(Object x) {
-    return x.equals(id) ;
+    return (x == null) ? false : x.equals(id) ;
+  }
+
+  @Override
+  public int hashCode() {
+    int hash = 1;
+    hash = hash * 17 + id;
+    hash = hash * 31 + distance;
+    return hash;
   }
 
   @Override
-- 
2.20.1