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- Question
What is the difference between an Interface and an Abstract class ?
- Correct Answer
- 1Main difference is methods of a Java interface are implicitly abstract and cannot have implementations A Java abstract class can have instance methods that implements a default behavior 2Variables declared in a Java interface is by default final An abstract class may contain non-final variables 3Members of a Java interface are public by default A Java abstract class can have the usual flavors of class members like private, protected, etc 4Java interface should be implemented using keyword ?implements?; A Java abstract class should be extended using keyword ?extends? 5An interface can extend another Java interface only, an abstract class can extend another Java class and implement multiple Java interfaces 6A Java class can implement multiple interfaces but it can extend only one abstract class 7Interface is absolutely abstract and cannot be instantiated; A Java abstract class also cannot be instantiated, but can be invoked if a main() exists 8In comparison with java abstract classes, java interfaces are slow as it requires extra indirection
- 1. Who is responsible for maintaining the Accounts receivable in an organization? Discuss
- 2. What are the components of DataStage? Discuss
- 3. Credit sales are recorded as
Options- A. Accounts Receivable
- B. Accounts Payable
- C. Both A & B
- D. None of the above Discuss
- 4. Which of the following is not a function of a Warehouse?
Options- A. Ensuring Profit
- B. Stabilisation in price
- C. Risk-bearing
- D. Storage Discuss
- 5. What is commercial Bank ? Discuss
- 6. Which of the following are elements of SQL?
Options- A. base-table-identifier ::= user-defined-name
- B. base-table-name ::= base-table-identifier
- C. boolean-primary ::= comparison-predicate
- D. All the above Discuss
- 7. State Bank of India recently launched 'SBI Exclusif'. It is a ____ product.
Options- A. Wealth Management
- B. Loan
- C. Mutual Fund
- D. Insurance Discuss
- 8. Describe the use of PL/SQL table? Discuss
- 9. Name any three PL/SQL exceptions? Discuss
- 10. Which one of the following sorts rows in SQL?
Options- A. ORDER BY
- B. GROUP BY
- C. SORT BY
- D. ALIGN BY Discuss
More questions
Correct Answer: Accountants in big organization there will be a department to maintain AR department
Correct Answer: Datastage has two components -Client Components ? Designer, Director, Manager and Administrator -Server Components ? Server, Repository and Plug-ins
Correct Answer: Accounts Receivable
Correct Answer: Ensuring Profit
Correct Answer: A commercial bank is a type of bank that provides services such as accepting deposits, making business loans, and offering basic investment products Commercial bank can also refer to a bank or a division of a bank that mostly deals with deposits and loans from corporations or large businesses, as opposed to individual members of the public
Correct Answer: All the above
Correct Answer: Wealth Management
Correct Answer: PL/SQL tables are scalar arrays that can be referenced by a binary digit They can be used to store values for later queries and calculations
Correct Answer: Too_many_rows No_Data_Found Zero_Error
Correct Answer: ORDER BY
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