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MCQOPTIONS
This section includes 1671 Mcqs, each offering curated multiple-choice questions to sharpen your Technical Programming knowledge and support exam preparation. Choose a topic below to get started.
| 1651. |
Which of these is a process of writing the state of an object to a byte stream? |
| A. | Serialization |
| B. | Externalization |
| C. | File Filtering |
| D. | All of the mentioned |
| Answer» B. Externalization | |
| 1652. |
Which of the following is/are legal method declarations? a. protected abstract void m1(); b. static final void m1(){} c. synchronized public final void m1() {} d. private native void m1(); |
| A. | 1 and 3 |
| B. | 2 and 4 |
| C. | 1 only |
| D. | All of them are legal declarations. |
| Answer» E. | |
| 1653. |
You want subclasses in any package to have access to members of a superclass. Which is the most restrictive access that accomplishes this objective? |
| A. | public |
| B. | private |
| C. | protected |
| D. | transient |
| Answer» D. transient | |
| 1654. |
Which of the following is correct constructor for thread? |
| A. | Thread(Runnable a, String str) |
| B. | Thread(int priority) |
| C. | Thread(Runnable a, int priority) |
| D. | Thread(Runnable a, ThreadGroup t) |
| Answer» B. Thread(int priority) | |
| 1655. |
What is true about time slicing? |
| A. | Time slicing is OS service that allocates CPU time to available runnable thread |
| B. | Time slicing is the process to divide the available CPU time to available runnable thread |
| C. | Time slicing depends on its implementation in OS |
| D. | Time slicing allocates more resources to thread |
| Answer» C. Time slicing depends on its implementation in OS | |
| 1656. |
What is the output of this program? import java.util.*; class Bitset { public static void main(String args[]) { BitSet obj = new BitSet(5); for (int i = 0; i < 5; ++i) obj.set(i); obj.clear(2); System.out.print(obj); } } |
| A. | {0, 1, 3, 4} |
| B. | {0, 1, 2, 4} |
| C. | {0, 1, 2, 3, 4} |
| D. | {0, 0, 0, 3, 4} |
| Answer» B. {0, 1, 2, 4} | |
| 1657. |
What is Collection in Java? |
| A. | A group of objects |
| B. | A group of classes |
| C. | A group of interfaces |
| D. | None of the mentioned |
| Answer» B. A group of classes | |
| 1658. |
Which of these interface is not a part of Java’s collection framework? |
| A. | List |
| B. | Set |
| C. | SortedMap |
| D. | SortedList |
| Answer» E. | |
| 1659. |
Which method of string class in java is used to convert the boolean into String? |
| A. | public static String valueOf(double I) |
| B. | public static String valueOf(boolean I) |
| C. | public boolean equals(Object anObject) |
| D. | public static String valueOf(Object obj) |
| Answer» B. public static String valueOf(boolean I) | |
| 1660. |
Which is used to separate the hierarchy of the class while declaring an import statement? |
| A. | Package |
| B. | Applet |
| C. | Browser |
| D. | All of the above |
| Answer» B. Applet | |
| 1661. |
Give the Output for the following program? class Char { public static void main(String args[]) { char ch1, ch2; ch1 = 88; // code for X ch2 = 'Y'; System.out.print("ch1 and ch2: "); System.out.println(ch1 + " " + ch2); } } |
| A. | ch1 and ch2: X Y |
| B. | ch1 and ch2: x y |
| C. | ch1 and ch2: 1 3 |
| D. | None of the above |
| Answer» B. ch1 and ch2: x y | |
| 1662. |
What are the exceptions which have to be handled in a RMI client program? |
| A. | RemoteException |
| B. | NotBoundException |
| C. | MalFormedURLException |
| D. | All mentioned above |
| Answer» E. | |
| 1663. |
Which component does the Entity bean represent the persistent data stored in the database? |
| A. | Server-side component |
| B. | Client-side component |
| C. | server and client side component |
| D. | None of the above |
| Answer» B. Client-side component | |
| 1664. |
Which cookie it is valid for single session only and it is removed each time when the user closes the browser? |
| A. | Persistent cookie |
| B. | Non-persistent cookie |
| C. | All the above |
| D. | None of the above |
| Answer» C. All the above | |
| 1665. |
Which is used to call the stored procedures and functions? |
| A. | CallableStatement Interface |
| B. | PreparedStatement Interface |
| C. | All the above |
| D. | None of the above |
| Answer» B. PreparedStatement Interface | |
| 1666. |
If you are inserting any value in the wrong index as shown below, 1. int a[]=new int[5]; 2. a[10]=50; it would result in ______. |
| A. | NullPointerException |
| B. | ArrayIndexOutOfBoundsException |
| C. | ArithmeticException |
| D. | NumberFormatException |
| Answer» C. ArithmeticException | |
| 1667. |
The following program is an example of? class Simple{ public static void main(String args[]){ String s="Sachin"; System.out.println(s.length());//6 } } |
| A. | length() method |
| B. | intern() method |
| C. | trim() method |
| D. | charAt() method |
| Answer» B. intern() method | |
| 1668. |
Which variables are created when an object is created with the use of the keyword 'new' and destroyed when the object is destroyed? |
| A. | Local variables |
| B. | Instance variables |
| C. | Class Variables |
| D. | Static variables |
| Answer» C. Class Variables | |
| 1669. |
Java supports RMI, RMI Stands for? |
| A. | Random Method Invocation |
| B. | Remote Memory Interface |
| C. | Remote Method Invocation |
| D. | Random Method Invocation |
| Answer» D. Random Method Invocation | |
| 1670. |
Which constructor creates an empty string buffer with the specified capacity as length. |
| A. | StringBuffer() |
| B. | StringBuffer(String str) |
| C. | StringBuffer(int capacity) |
| D. | None of the above |
| Answer» D. None of the above | |
| 1671. |
Which method is used to change the name of a thread? |
| A. | public String getName() |
| B. | public void setName(String name) |
| C. | public void getName() |
| D. | public String setName(String name) |
| Answer» C. public void getName() | |