Encapsulation is about wrapping the implementation (code) and the data it manipulates (variables) within the same class. A Java class, where all instance variables are private, and only the methods within the class can manipulate those variables, is an example of an encapsulated class. If you want to read more about ab...
Knowing the difference between abstraction andencapsulationis the key to profoundly understanding both concepts. You cannot learn either of both in isolation. They walk along in Java, so we must understand them collectively. In this post, I have explained encapsulation and differentiated it with abstr...
Reflection can be used to bypass constructor calls, but this approach is generally discouraged for unit tests due to its potential for breaking encapsulation and making tests brittle. It is generally for edge cases. Code: import java.lang.reflect.Constructor; class SampleClass { private String valu...
To Become an Android developer by learning Java or Kotlin, mastering Android Studio, and building apps through hands-on projects and continuous practice.
Composition in Java is vital for extending two classes as it avoids the complexities of multiple inheritance. It fosters code flexibility, promotes encapsulation, and prevents the diamond problem. By creating relationships between classes through composition, developers achieve a modular and maintainable de...
In order to achieve distinct elements based on thenameproperty, we leverage the combination ofmap(),distinct(), andcollect()in Java 8 streams. Themap()operation extracts names,distinct()ensures uniqueness, and anothermap()retrieves the firstPersonwith each unique name. ...
While using JavaScript, you might be dearly missing our friend "private" from statically-typed languages like C#, C++, and Java. Using a little finesse, we can actually achieve true encapsulation using local variables in vanilla JavaScript (ES6) classes. There are many instances where we want ...
This Knowledge Base explains the wayto add cell templates dynamically inJavaScript Spreadsheetusing ng-template in Angular.Youcan use “ng-template” support of Angular and “template” support of Spreadsheet to achieve this requirement. In the below solution we have dynamically added Button, CheckBox...
Thethiskeyword is another one of the things JavaScript added to look like Java. In Java, and classical OOP in general,thisrefers to the current instance on which the method or constructor is being invoked, just that. However, in JavaScript, we didn’t have class syntax until ES6 but still...
How is a 'static inner class' different from a 'non-static inner class' in Java? What is 'polymorphism' in the context of Java? In Java, what is the function of the 'super' keyword? What is 'encapsulation' in Java? What is the primary purpose of the 'try-with-resources' sta...