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Categories >> Software >> Java Related >> Java J2EE >> Core Java
 
 


 

 
 Core Java interview questions  Core Java Interview Questions (1721)
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Question
What is the multilevel inheritance. and also give the Example 
of it ?
 Question Submitted By :: Core-Java
I also faced this Question!!     Answer Posted By  
 
Answer
# 1
Multilevel inheritance is a java feature where the
properties of a class are inherited by a class which extends
one class and which extend its features...

Example:

public class A {
public String getName(){
return "Fatima";
}
}

public class B extends A {
public int getAge() {
return 25;
}
}

public class C extends B {
public String getAddress(){
return "Panvel,Navi Mumbai India";
}
}

public class D extends C {
public void print {
System.out.println(getName());
System.out.println(getAge());
System.out.println(getAddress());
}
}

This method would print the following in the console:
Fatima
25
Panvel, Navi Mumbai, India

Here in class D you are calling methods that are available
inside classes A, B & C. Though D extends only class C, it
would in turn inherit the properties of the classes extended
by C and its parents.

This is multi level inheritance.
 
Is This Answer Correct ?    13 Yes 3 No
Fatima Deshmukh
 
Answer
# 2
Multilevel inheritance is a java feature where the
properties of a class are inherited by a class which extends
one class and which extend its features...

Example:

public class A {
public String getName(){
return "Fatima";
}
}

public class B extends A {
public int getAge() {
return 25;
}
}

public class C extends B {
public String getAddress(){
return "Panvel,Navi Mumbai India";
}
}

public class D extends C {
public void print {
System.out.println(getName());
System.out.println(getAge());
System.out.println(getAddress());
}
}

This method would print the following in the console:
Fatima
25
Panvel, Navi Mumbai, India

Here in class D you are calling methods that are available
inside classes A, B & C. Though D extends only class C, it
would in turn inherit the properties of the classes extended
by C and its parents.

This is multi level inheritance.
 
Is This Answer Correct ?    8 Yes 3 No
Fatima Deshmukh
 
 
 
Answer
# 3
Multilevel inheritance is a java feature where the
properties of a class are inherited by a class which
extends one or more classes which extend its features.
example:

import java.io.*;
class superclass
{
void sum(int x,int y)
{
int add;
add=x+y;
System.out.println("addition="+ add);
}
}

class subclassA extends superclass
{
void subtraction(int a, int b)
{
int sub;
sub=a-b;
System.out.println("subtraction="+sub);
}
}

class subclassB extends subclassA
{
void multiplication(int m, int n)
{
int mult;
mult=m*n;
System.out.println("multipliction="+mult);
}
}

class subclassC extends subclassB
{
public static void main(String arg[])throws IOException;
{
BufferedReader br=new BufferedReader(new
InputStreamReader(System.in));
int p,q;
System.out.println("enter value in p");
p=Integer.parseInt(br.readLine());
System.out.println("enter value in q");
q=Integer.parseInt(br.readLine());
subclassC obj=new subclassC();
obj.multiplication(p,q);
obj.subtraction(p,q);
obj.sum(p,q);
}
}
 
Is This Answer Correct ?    6 Yes 1 No
Namrata
 
Answer
# 4
Plz send answer of this question my email -
punitchauhan22@gmail.com
 
Is This Answer Correct ?    7 Yes 4 No
Punit Chauhan
 
Answer
# 5
a multilevel inheritence is one in which there exist one base
class ,one derived class and multiple intermediate base class.
 
Is This Answer Correct ?    6 Yes 8 No
Guest
 

 
 
 
Other Core Java Interview Questions
 
  Question Asked @ Answers
 
what is for datainputstream?   1
what r callable statement and give their proper use   2
why Runnable interface is preferable than extending the Thread class? Wipro 7
How the elements are organized in GridBagLayout?   1
Which is the best way of exception handling? Oracle 2
In the first round, there are 30 aptitude and 30 java questions. We are suppose to finish both the papers within 60 minutes. I cleared this round. Next was test for programming skills. In this section, Some 7 n's were asked. 1. What is the difference b/w sleep(1000) and wait(1000) 2. what is the diff b/w static block and static function? 3. Write a program to validate IP address using string tokenizer. 4. Write a program to create singleton class 5. write a function to reverse the string 6. Write a prog to print prime nos upto n. EX: If n=9, It shld print 1,2,3,5,7 7. One program on collections- Write a program to print no. of times a number is repeating in an array. EX- {1,3,1,2,5,7,3,7,34,3,8,3} It should print: 1- 2 times 3- 4 times and so on 7. Write a func to print fibonocci series After this I had technical interview, which went on for. 60 mins or so. There were qn's about multi threading, Exception handling and collection classes. Knowledge about collections was very important for the post I was interviewed for. Huawei 1
What is singleton class? AMDOC 16
How to add panel to a Frame?   5
explain about jre and jvm   2
What are batch updates. in jdbc Corent-Technology 2
Which One is optimal to choose ? Syncronized hash map or Hash table with single thread model? How can a hash map syncronized with out using syncrozed blocks in programm? Four-soft 3
System.out.println(101/14) what is the output? a)6 b)14 c)7.14 d)0 Accenture 8
 
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