Welcome to the Interfaces and Packages MCQs Page
Dive deep into the fascinating world of Interfaces and Packages with our comprehensive set of Multiple-Choice Questions (MCQs). This page is dedicated to exploring the fundamental concepts and intricacies of Interfaces and Packages, a crucial aspect of Java Programming. In this section, you will encounter a diverse range of MCQs that cover various aspects of Interfaces and Packages, 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.
Check out the MCQs below to embark on an enriching journey through Interfaces and Packages. 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 Interfaces and Packages. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!
Interfaces and Packages MCQs | Page 5 of 12
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public class BoxDemo
{
public static <U> void addBox(U u,
java.util.List<Box<U>> boxes)
{
Box<U> box = new Box<>();
box.set(u);
boxes.add(box);
}
public static <U> void outputBoxes(java.util.List<Box<U>> boxes)
{
int counter = 0;
for (Box<U> box: boxes)
{
U boxContents = box.get();
System.out.println("[" + boxContents.toString() + "]");
counter++;
}
}
public static void main(String[] args)
{
java.util.ArrayList<Box<Integer>> listOfIntegerBoxes = new java.util.ArrayList<>();
BoxDemo.<Integer>addBox(Integer.valueOf(0), listOfIntegerBoxes);
BoxDemo.outputBoxes(listOfIntegerBoxes);
}
} import java.awt.*;
import java.applet.*;
public class myapplet extends Applet
{
Graphic g;
g.drawString("A Simple Applet",20,20);
} import java.lang.reflect.*;
class Additional_packages
{
public static void main(String args[])
{
try
{
Class c = Class.forName("java.awt.Dimension");
Method methods[] = c.getMethods();
for (int i = 0; i < methods.length; i++)
System.out.println(methods[i]);
}
catch (Exception e)
{
System.out.print("Exception");
}
}
} 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 <String> gs = new genericstack<String>();
gs.push("Hello");
System.out.print(gs.pop() + " ");
genericstack <Integer> gs = new genericstack<Integer>();
gs.push(36);
System.out.println(gs.pop());
}
} public class BoxDemo
{
public static <U> void addBox(U u,
java.util.List<Box<U>> boxes)
{
Box<U> box = new Box<>();
box.set(u);
boxes.add(box);
}
public static <U> void outputBoxes(java.util.List<Box<U>> boxes)
{
int counter = 0;
for (Box<U> box: boxes)
{
U boxContents = box.get();
System.out.println("Box #" + counter + " contains [" + boxContents.toString() + "]");
counter++;
}
}
public static void main(String[] args)
{
java.util.ArrayList<Box<Integer>> listOfIntegerBoxes = new java.util.ArrayList<>();
BoxDemo.<Integer>addBox(Integer.valueOf(10), listOfIntegerBoxes);
BoxDemo.outputBoxes(listOfIntegerBoxes);
}
}interface calculate
{
void cal(int item);
}
class display implements calculate
{
int x;
public void cal(int item)
{
x = item * item;
}
}
class Main
{
public static void main(String args[])
{
display arr = new display();
arr.x = 0;
arr.cal(2);
System.out.print(arr.x);
}
}Suggested Topics
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