What is the null?
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How are this and super used?
What is Collection interface?
What are batch updates. in jdbc
What is the difference between JDBC 1.0 and JDBC 2.0?
can we write program without class
we know that every java prog must follows OOPS Principles. Anybody can answer, HOW THE FOLLOWING PROGRAM FOLLOWS OOPS CONCEPTS i.e, Inheritance,Polymarphism,Encapsulation? class a{ public static void main(String args[]){ System.out.println("Hello World"); } }
Is singleton class thread safe?
Why java strings are immutable in nature?
What is the purpose of final keyword and when to use it?
Can variables be used in java without initialization?
give me the answer of this code class A extnds String This code we can write r not in Java? Explain?
What flag up means?