creating a own exception in subclasses in java in hindi

Note: Remember that you have to pass the class file name which contains the main( ) function while running the program. After compiling RectArea.java file we get two class files one is Rectangle3.class and other is RectArea.class then use RectArea.class file for running the program. We are created the object of the Rectangle3 class by using new keyword and printing the objects value. Your subclasses do not need to actually implement anything, it is. This is quite easy to do: just define a subclass of Exception (a subclass of Throwable). And we have created two methods getdata( ) and putdata( ) which gets the data and displays the data respectively. Even though the Javas built-in exceptions handle the most common errors, you will probably want to create your own exception types to manage the situations specific to your applications. In this program, we have created a Rectangle3 class that have two data members length and width. Create a Custom Exception class if the predefined class is not sufficient. Even though the Java's built-in exceptions handle the most common errors, you will probably want to create your own exception types to manage the situations specific to your applications. Object_name = new class_name( ) // Instantiating object of classĬlass_name object_name = new class_name( ) // Creating object The syntax for creating an object of class is shown below:Ĭlass_name object_name // Create object reference Objects of specific class are created using new operator which returns reference of that object. The following program creates a custom exception type. It inherits methods provided by Throwable. The Exception class does not define any methods of its own. You can create your own exception class by defining a subclass of Exception. Creating an object is referred to an object. How to create your own exception subclasses Description. A method has a return type such as void, int, etc. Where, type is the data type of a variable which it may hold. A class is declared by use of the class keyword. It is a template for an object, and an object is an instance of a class. A class is a collection of objects that has common properties.

Creating a own exception in subclasses in java in hindi