What is the difference between JDBC 1.0 and JDBC 2.0?
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Every class extends object but why it is not possible for every object to invoke clone() method. ideally protected methods should be accessible from sub classes. isn't it?
Define an abstract class with reference to java.
What are the differences between abstract class and interface?
What are different ways of object creation in java ?
What does 3 dots mean in java?
I want to print “hello” even before main is executed. How will you acheive that?
What is return null in java?
What is the relationship between clipping and repainting under awt?
what is an object class?Explain its methods?
What is the meaning of variable in research?
What is meant by memory leak?
What is identifier give example?