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They had given one progam
final HashMap hm=new HashMap();
public void show()
{
hm.put("name",value);
}
in this prg here the final hashtable value can be changed in
put method,its the prg run?
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Answer / kr
hash map values can be modified but the hashmap object
cannot be modified
hm.put("name",value); //allowed
hm = new HashMap() // throw error since the object is fianl
| Is This Answer Correct ? | 19 Yes | 1 No |
Answer / abhinav mutreja
Thats Correct that contents of the HashMap can be changed
even if HashMap is declared as final.
If you contents also should not get changed then you can use
Map hm = Collections.unmodifiableMap(new HashMap());
here if you do
hm.put(1,"Hi");
then it would give Runtime Exception :-
Exception in thread "main"
java.lang.UnsupportedOperationException
at java.util.Collections$UnmodifiableMap.put
(Unknown Source)
| Is This Answer Correct ? | 8 Yes | 0 No |
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