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Thread Safe Collection classes?

 
Joe Harry
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Guys,

Can anyone tell me which classes in the Collection interface are thread safe?
 
Sanjeev Singh
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Jothi,
Hashtable and Vector has the methods which are syncronized and are thread safe.
Syncronized collections can be made through the utility methods in Collections class from the existing collection.
 
Joe Harry
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Thanks Sanjeev. By the way, what it means "Syncronized collections can be made through the utility methods in Collections class from the existing collection."??
 
Sanjeev Singh
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Please look into the Collections utility class.
It has six syncronizedXxxx()methods which returns a syncronized collection.
 
Joe Harry
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Allright, I'll get back to this tonight after I finish perusing through Collections class.
 
Burkhard Hassel
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Hi Jothi,

there are methods in java.util.Collections that return a thread safe collection from a non thread safe one.
All these methods names start with "synchronized".
e.g.
List<Double> list = new ArrayList<Double>();
List<Double> safe;
safe = Collections.synchronizedList(list);


Yours,
Bu.
 
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