What is the difference between serializable and externalizable interfaces?
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when i write string s1="java"; in one program(application) and string s2="java"; in another application on the same jvm will both objects s2,s2 will refer to same memory location where "java" is stored in string pool.
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?
What are the access modifiers in java?
what is the form of storage space in java?
How does singleton class work?
perpare on factorypattern,linklist wothout using collection, (multitharding ie create producer/customer therad producer create Queue continuesly,consumer consume queue, consumer wait if queue is full,producer wait if queue is empty),diff betn sleep(1000)&wait(1000) these r the main Q ask in huawei(2008)
What is left shift and right shift?
how to handle exceptions in core applications?
how to call a method in different package?
How do you remove duplicates in java?
What is the difference between replace and replace all?
Describe method overriding