Java Language Tutorial => Java LinkedHashMap class

Example

Key Points:-

Is Hash table and Linked list implementation of the Map interface, with predictable iteration order.
inherits HashMap class and implements the Map interface.
contains values based on the key.
only unique elements.
may have one null key and multiple null values.
same as HashMap instead maintains insertion order.

Methods :-

void clear().
boolean containsKey(Object key).
Object get(Object key).
protected boolean removeEldestEntry(Map.Entry eldest)

Example :-

public static void main(String arg[])
    {
        LinkedHashMap<String, String> lhm = new LinkedHashMap<String, String>();
        lhm.put("Ramesh", "Intermediate");
        lhm.put("Shiva", "B-Tech");
        lhm.put("Santosh", "B-Com");
        lhm.put("Asha", "Msc");
        lhm.put("Raghu", "M-Tech");
        
        Set set = lhm.entrySet();
        Iterator i = set.iterator();
        while (i.hasNext()) {
            Map.Entry me = (Map.Entry) i.next();
            System.out.println(me.getKey() + " : " + me.getValue());
        }
                
        System.out.println("The Key Contains : " + lhm.containsKey("Shiva"));
        System.out.println("The value to the corresponding to key : " + lhm.get("Asha"));    
    }

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Java Language LinkedHashMap Java LinkedHashMap class

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