Welcome to the Classes and Methods MCQs Page
Dive deep into the fascinating world of Classes and Methods with our comprehensive set of Multiple-Choice Questions (MCQs). This page is dedicated to exploring the fundamental concepts and intricacies of Classes and Methods, a crucial aspect of Java Programming. In this section, you will encounter a diverse range of MCQs that cover various aspects of Classes and Methods, 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 Classes and Methods. 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 Classes and Methods. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!
Classes and Methods MCQs | Page 27 of 30
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Follow the notation "superclassMethod" and "subclassMethod".
void subclassMethod(int a, float b) { }
class Cat
{
int jumpingHeight(int weight)
{
System.out.println(10);
return 10;
}
}
class WildCat extends Cat
{
void jumpingHeight(int weight)
{
System.out.println("20");
}
}
public class MethodOverriding3
{
public static void main(String[] args)
{
WildCat wc = new WildCat();
wc.jumpingHeight(30);
}
}class Sparrow{ }
class BigSparrow extends Sparrow { }
class Cat2
{
Sparrow jumpingHeight(int weight)
{
System.out.println(40);
return new Sparrow();
}
}
class WildCat2 extends Cat2
{
BigSparrow jumpingHeight(int weight)
{
System.out.println("50");
return new BigSparrow();
}
}
public class MethodOverriding4
{
public static void main(String[] args)
{
WildCat2 wc = new WildCat2();
wc.jumpingHeight(80);
}
}class Steel
{
void setGrade(int g)
{
System.out.print(",GRADE="+g);
}
}
class CarbonSteel extends Steel
{
void setGrade(char grade)
{
System.out.print(",Grade="+grade);
}
}
public class MethodOverriding5
{
public static void main(String[] args)
{
Steel s = new CarbonSteel();
s.setGrade(5);
s.setGrade('A');
}
}class Wood
{
void setQuality(int q)
{
System.out.print(",QUALITY="+q);
}
}
class PlyWood extends Wood
{
void setQuality(char qual)
{
System.out.print(",quality="+qual);
}
}
public class MethodOverriding6
{
public static void main(String[] args)
{
PlyWood pw = new PlyWood();
pw.setQuality(10);
pw.setQuality('B'); //ASCII of B=66
}
}class Amplifier
{
void addGain(int a)
{
System.out.println((a + 10)+"dB");
}
}
class DigitalAmplifier extends Amplifier
{
void addGain(int a)
{
super.addGain(a+5);
}
}
public class MethodOverriding7
{
public static void main(String[] args)
{
DigitalAmplifier da = new DigitalAmplifier();
da.addGain(12);
}
}Suggested Topics
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