addition program in java using class

How to use class in Java program?
The print method will simply convert its argument to a string and write out the result.
Therefore, if you want to display the two numbers concatenated, you will need to do this yourself by converting them to a string (either explicitly, or using "" as you've already mentioned).
How do I add more classes in Java?
Java Classes and Objects
1Java Classes/Objects.
Java is an object-oriented programming language.
2) Create a Class.
To create a class, use the keyword class : 3Create an Object.
In Java, an object is created from a class.
4) Multiple Objects.
You can create multiple objects of one class: 5Using Multiple Classes.
How to program addition in Java?
Java does not allow a class to extend multiple classes directly.
The reason for this is to avoid the Diamond Problem, which occurs when a class inherits from two classes that have a common superclass.
To avoid this issue, Java allows a class to implement multiple interfaces, which can achieve similar functionality.

Sum of Two Numbers Using Command Line Arguments in Java

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