Java Programming
Classes, objects, and methods
Call methods

When you create an object from a Java class, you are creating an instance of the class. Then, you can use the methods of the class by calling them from the object.
Some Java classes contain static methods. These methods can be called directly from the class without creating an object.
When you create an object from a class, the constructor may require one or more arguments. These arguments must have the required data types, and they must be coded in the correct sequence separated by commas.
When you call a method from an object or a class, the method may require one or more arguments.

To call a method from an object:

Syntax

objectName.methodName(arguments)

Examples

// get a double entry from the console
double subtotal = sc.nextDouble();

// convert the date to a string
String currentDate = now.toString();

To call a static method from a class:

Syntax

ClassName.methodName(arguments)

Examples

// convert a double to a string
String sPrice = Double.toString(price);

// convert a string to a double
double total = Double.parseDouble(userEntry);