What does null mean in java?
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Can I declare a class as private?
Wha is the output from system.out.println(“hello”+null); ?
Can an interface extend another interface?
how copy the hashmap object into arraylist at java program?
What about main() method in java ?
What is the disadvantage of synchronization?
What is logical variable?
explain the classification of exception and hoew to handle the exceptions
What is the driver class?
Differences between C and Java?
Does java support Operator Overloading?
What is private protected in java?