What is a substitution variable?
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What is the differences between heap and stack memory in java? Explain
What is the use of http-tunneling in rmi?
Explain about public and private access specifiers?
What does main method?
What is the difference between getCodeBase and getDocumentBase methods?
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What is the difference between arraylist and hashset in java?
Is java hashset ordered?
Which One is optimal to choose ? Syncronized hash map or Hash table with single thread model? How can a hash map syncronized with out using syncrozed blocks in programm?
What is meant by class loader? How many types are there? When will we use them?
Iterator in the HashMap is fail-safe means what?
What is comparator in java?
what is the final keyword denotes in java?