java interview questions

• What is the difference between procedural and object-oriented programs?

• what is java? or define java?

• What is the difference between Assignment and Initialization?

• What is an Iterator?

• What is casting?

• what is static method?

• What is final, finalize() and finally?

• what is final?

• How many ways can an argument be passed to a subroutine and explain them?

• what id the meaning of final in variable , method and class?


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• What is OOPs?What is an Object and how do you allocate memory to it?

• What is the difference between constructor and method?

• what is class?

• What is the difference between this() and super()?

• What is the difference between an argument and a parameter?

• What is an abstract class?

• what is encapsulation?

• What is daemon thread and which method is used to create the daemon thread?

• What is meant by pass by reference and pass by value in Java?

• What is the difference between an Interface and an Abstract class?

• What are wrapper classes?

• what is polymorphism?

• Explain the usage of Java packages.

• What is difference between overloading and overriding?

• What is the purpose of garbage collection in Java, and when is it used?

• what is thread?

• what is inheritance?

• What is the difference between superclass and subclass?

• what is interface?

• What is JDBC?

• What is the difference between JDBC and ODBC?

• What are drivers available?

• what is swing?

• what is diff between swing and awt?

• What are the types of statements in JDBC?

• What are the steps involved for making a connection with a database or how do you connect to a database?

Posted in: basic java