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  • Question
  • What is immutable object? Can you write immutable object ?


  • Correct Answer
  • Immutable classes are Java classes whose objects can not be modified once created Any modification in Immutable object result in new object For example is String is immutable in Java Mostly Immutable are also final in Java, in order to prevent sub class from overriding methods in Java which can compromise Immutability You can achieve same functionality by making member as non final but private and not modifying them except in constructor 

  • Tags: Analyst, Database Administrator, IT Trainer, Project Manager

    More questions

    • 1. How would you automatically transfer your visitors to a new web page?
    • Discuss
    • 2. The threshold limit upto which coins can be issued as per the Coinage Act 2011 ?

    • Options
    • A. 100
    • B. 200
    • C. 500
    • D. 1000
    • Discuss
    • 3. Cash Reserve Ratio ( CRR) and Stautory Liquidity Ratio (SLR ) are terms most closely related to which of the following industries/markets :

    • Options
    • A. Mutual Fund
    • B. Income Tax
    • C. Stock Exchange
    • D. Banking
    • Discuss
    • 4. What is the minimum period of time for which one can open an FD(Fixed Deposit) account ?

    • Options
    • A. 15 days
    • B. 6 months
    • C. 7 days
    • D. 1 year
    • Discuss
    • 5. Which Bank has been given scheduled bank status by RBI ?

    • Options
    • A. Disha
    • B. Suryoday
    • C. Janalakshmi
    • D. Ujjivan
    • Discuss
    • 6. Which class is used to indicate Black Navigation Bar ?

    • Options
    • A. .navbar-inverse
    • B. .navbar-black
    • C. .navbar-dark
    • D. .navbar-default
    • Discuss
    • 7. The journal entry to record a credit sale is

    • Options
    • A. Accounts Receivable
    • B. Accounts Payable
    • C. Both A & B
    • D. None of the above
    • Discuss
    • 8. What is CRR rate?
    • Discuss
    • 9. Which among the following are not access Specifiers in C++?

    • Options
    • A. Public
    • B. Protected
    • C. Default
    • D. Private
    • Discuss
    • 10. In which year, the first bank of India "Bank of Hindustan" was established ?

    • Options
    • A. 1677
    • B. 1770
    • C. 1796
    • D. 1831
    • Discuss


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