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Welcome to the Miscellaneous Topics in Java MCQs Page

Dive deep into the fascinating world of Miscellaneous Topics in Java with our comprehensive set of Multiple-Choice Questions (MCQs). This page is dedicated to exploring the fundamental concepts and intricacies of Miscellaneous Topics in Java, a crucial aspect of Java Programming. In this section, you will encounter a diverse range of MCQs that cover various aspects of Miscellaneous Topics in Java, from the basic principles to advanced topics. Each question is thoughtfully crafted to challenge your knowledge and deepen your understanding of this critical subcategory within Java Programming.

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Check out the MCQs below to embark on an enriching journey through Miscellaneous Topics in Java. Test your knowledge, expand your horizons, and solidify your grasp on this vital area of Java Programming.

Note: Each MCQ comes with multiple answer choices. Select the most appropriate option and test your understanding of Miscellaneous Topics in Java. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!

Miscellaneous Topics in Java MCQs | Page 10 of 23

Q91.
Which of these is an correct way making a list that is upper bounded by class Number?
Discuss
Answer: (a).List<? extends Number>
Q92.
Which of the following keywords are used for lower bounding a wild card?
Discuss
Answer: (b).super
Q93.
What is the output of this program?
    import java.util.*;
    class Output
    {
        public static double sumOfList(List<? extends Number> list)
        {
            double s = 0.0;
            for (Number n : list)
                s += n.doubleValue();
            return s;
        }
        public static void main(String args[])
        {
            List<Integer> li = Arrays.asList(1, 2, 3);
            System.out.println(sumOfList(li));
        }
    }
Discuss
Answer: (d).6.0
Q94.
What is the output of this program?
    import java.util.*;
    class Output 
    {
        public static double sumOfList(List<? extends Number> list)
        {
            double s = 0.0;
            for (Number n : list)
                s += n.doubleValue();
            return s;
        }
        public static void main(String args[]) 
        {
           List<Double> ld = Arrays.asList(1.2, 2.3, 3.5);
           System.out.println(sumOfList(ld));
        }
    }
Discuss
Answer: (b).7.0
Q95.
What is the output of this program?
    import java.util.*;
    public class genericstack <E>
    {
        Stack <E> stk = new Stack <E>();
 public void push(E obj)
        {
            stk.push(obj);
 }
 public E pop() 
        {
            E obj = stk.pop();
     return obj;
 }
    }
    class Output
    {
        public static void main(String args[])
        {
            genericstack <Integer> gs = new genericstack<Integer>();
            gs.push(36);
            System.out.println(gs.pop());
        }
    }
Discuss
Answer: (d).Compilation Error
Q96.
Which of the following is not an Enterprise Beans type?
Discuss
Answer: (a).Doubleton
Discuss
Answer: (b).Extends java.io.Serializable class
Q98.
Which file separator should be used by MANIFEST file?
Discuss
Answer: (a)./
Q99.
Which of the following is correct error when loading JAR file with duplicate name?
Discuss
Answer: (c).java.lang.ClassFormatError
Q100.
Java Beans are extremely secured?
Discuss
Answer: (b).False

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