Answer Posted / paletipatisrinu

singleton class:A java class create only one object per jvm
is called singleton java class.Most of jdbc driver class
implemented as a singleton java class

Ex:
class SingletonClass
{
private static SingletonClass singleObject;
public static SingletonClass getInstance()
{
if (singleObject == null)
{
singleObject = new SingletonClass();
}
return singleObject;
}
}

Singletone java class example is
org.apache.struts.action.ActionServlet

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