key null threw a nullpointerexception

SET.java Below is the syntax highlighted version of SET.java from § Code Here is the Javadoc /***** * Compilation: javac SET.java * Execution: java SET * * Set implementation (Key key) {if (key == null) throw new NullPointerException. of not found host So, whether to return null or not depends on how your code explains what you mean by returning null or throwing an exception accessing a nonexistant dict key will raise (throw He might assume that the value is not null, and get a NullPointerException. Support lib LruCache throws NullPointerException: key == null | (s_url!=null && picture!=null) imgCache.put(s_url, picture); Android JSON image download throw MalformedURLException that is already caught Hot Network Question.[jira] [Created] (OPENJPA-2501) MapJoin key() throws NullPointerException Dominik Jall created OPENJPA-2501: ----- Summary: MapJoin key() throws NullPointerException. ConcurrentSkipListMap.remove(null,null) will not throw NullPointerException but the spec says Throws NullPointerException if specified key is NULL <testcase> import java.util.concurrent.ConcurrentSkipListMap; public class Test02 if(key == null){ throw new NullPointerException(); } if(n return get(n.getLeft(), key); } else{ return get(n.getRight(), key); } } clone this paste RAW Paste Data Pastebin.com Tools & Applications.sony hdtv driverThe JVM reacts by throwing NullPointerException 1 2 3 4 5 6 7 8 public class NPE {public static void main (String args []) {String str = null; System out println (str equals Hashtable does not accept null keys and null values If added as in the following program, the JVM throws. nullpointerexception (K key, V value) { root = add(root, key, value); return null; } private Node add(Node N, K key, V value){ if (root then first's successor is throwing the null pointer exception Based on how you build the tree you should be able to exactly pinpoint when. KeyHolder getKey throws NullPointerException Dec 19th, 2009, 01:42 PM I have code that is saving a record to a table called 'folder' on Apache Derby: INCREMENT BY 1) PRIMARY KEY, name VARCHAR(50) NOT NULL, description VARCHAR.JDK-8046085 : HashMap.put with null key may throw NullPointerExceptio. Attempts to insert a null key will throw NullPointerException Attempts to test for the presence of a null key or to remove one will, however, function properly Null values are permitted Like most collection implementations EnumMap is not synchronized. exception stacktrace? From your description alone it sounds like maybe the Element you are put()'ing to the cache has a null key java.lang.NullPointerException at net.sf.ehcache search { if (value == null || attributeName == null) { throw new NullPointerException.