Explain OOPs concept.
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What is the difference between serializable and externalizable interface?
What is try-with-resources in java?
What is the catch or declare rule for method declarations?
When will we prefer to use set and list in java and why?
what is the difference between object and class
What is a constructor, constructor overloading in java?
can u handle an error if u write Thowable in the catch class lise try { some errorneous code }catch(Throwable e){ ...}
How do you use find and replace?
Why do we need array in java?
Why java is secure? Explain.
Why is it called a string?
How many types of thread in java? give the name