Skip to main content

OOPS Concepts in Java

Object-oriented programming language (OOPL) is high-level programming language based on the object-oriented programming (oop's) model. that provide many concepts such as inheritance, data binding, polymorphism etc.

OOP'S Concepts :
  • Object & Class 
  • Abstraction
  • Encapsulation
  • Polymorphism
  • Inheritance
#Object: 
Any entity that has state & behavior is known as an object.

#Class: 
A class is the blueprint of the object or Collection of the object is class.

#Abstraction:
Hiding Internal details and showing functionally is known as abstraction 

#Encapsulation :
Binding (or wrapping) code and data together into a single unit as known as encapsulation

#Inheritance : 
When one object acquires all the properties and behavior of the parent object.

#Polymorphism :
When one task is performed in different ways, we only use method overloading and overriding 

Overloading :
When we have more than one method with the same name in a single class but the arguments are different, then is called as method overloading

Overriding:
Overriding concept come into the picture with inheritance, when have two methods with the same signature one in the parent class and another in the child class. 


The Goals of oop's are : 
oop's  was to allow reusability of code you constantly write classes & interface these can be used again and by using inheritance.

#Robustness :
  •  the complex program should operate correctly.
  • should deal with improper input and conditions

#Adaptability 
  • Software grows over a long lifetime.
  • My run on the different generation and make of hardware.

#Reusability:
  • building from reusable pice avoids.




Labels:

Comments

Post a Comment

Popular posts from this blog

Java Loops II print each element of our series as a single line of space-separated values.

We use the integers  ,  , and   to create the following series: You are given   queries in the form of  ,  , and  . For each query, print the series corresponding to the given  ,  , and   values as a single line of   space-separated integers. Input Format The first line contains an integer,  , denoting the number of queries.  Each line   of the   subsequent lines contains three space-separated integers describing the respective  ,  , and   values for that query. Constraints Output Format For each query, print the corresponding series on a new line. Each series must be printed in order as a single line of   space-separated integers. Sample Input 2 0 2 10 5 3 5 Sample Output 2 6 14 30 62 126 254 510 1022 2046 8 14 26 50 98 Explanation We have two queries: We use  ,  , and   to produce some series  : ... and so on. Once we hit  , we print the first ten terms as a single line of space-separate
15 comments
Read more

Java Currency Formatter Solution

Given a  double-precision  number,  , denoting an amount of money, use the  NumberFormat  class'  getCurrencyInstance  method to convert   into the US, Indian, Chinese, and French currency formats. Then print the formatted values as follows: US: formattedPayment India: formattedPayment China: formattedPayment France: formattedPayment where   is   formatted according to the appropriate  Locale 's currency. Note:  India does not have a built-in Locale, so you must  construct one  where the language is  en  (i.e., English). Input Format A single double-precision number denoting  . Constraints Output Format On the first line, print  US: u  where   is   formatted for US currency.  On the second line, print  India: i  where   is   formatted for Indian currency.  On the third line, print  China: c  where   is   formatted for Chinese currency.  On the fourth line, print  France: f , where   is   formatted for French currency. Sample
7 comments
Read more

Java Substring Comparisons

We define the following terms: Lexicographical Order , also known as  alphabetic  or  dictionary  order, orders characters as follows:  For example,  ball < cat ,  dog < dorm ,  Happy < happy ,  Zoo < ball . A  substring  of a string is a contiguous block of characters in the string. For example, the substrings of  abc  are  a ,  b ,  c ,  ab ,  bc , and  abc . Given a string,  , and an integer,  , complete the function so that it finds the lexicographically  smallest  and  largest substrings of length  . Input Format The first line contains a string denoting  . The second line contains an integer denoting  . Constraints  consists of English alphabetic letters only (i.e.,  [a-zA-Z] ). Output Format Return the respective lexicographically smallest and largest substrings as a single newline-separated string. Sample Input 0 welcometojava 3 Sample Output 0 ava wel Explanation 0 S
4 comments
Read more