![]() ![]() * * Only way to remove entries from Map without throwing ConcurrentModificationException * is to use Iterator and while loop. ![]() * Java 1.5 foreach loop is most elegant and combined with entry set also * gives best performance, but not suitable for removing entries, as you don't have * reference to internal Iterator. Enhanced for loop, introduced in Java 5, can be used to iterate over a HashMap. Java HashMap HashMap is a container that stores key-value pairs. Return Value: The method returns boolean true if the presence of the key is detected else false Algorithm : Create a function with a return type of boolean. This method can be implemented to simply iterate through each key-value pair in. HashMap iteration with enhanced for loop. last modified JanuHashMap iteration in Java tutorial shows how to iterate over a HashMap in Java. Syntax: ntainsKey ( keyelement) Parameters: The method takes just one parameter keyelement that refers to the key whose mapping is supposed to be checked inside a map. ** * * Best way to iterate over Map in Java, including any implementation like * HashMap, TreeMap, LinkedHashMap, ConcurrentHashMap and Hashtable. The forEach() method is used to apply a particular operation for each element.
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