Typical Collections: CopyOnWriteArrayList, ConcurrentHashMap (from java.util.concurrent). 𝗛𝗼𝘄 𝗶𝘁 𝘄𝗼𝗿𝗸𝘀 𝗶𝗻𝘁𝗲𝗿𝗻𝗮𝗹𝗹𝘆 ? Fail-safe iterators iterate over a cloned copy of the collection ...