Final answer:
The variable commonly used to refer to the current instance in an instance method is called 'this'. It is found in several programming languages to access properties and methods of the current object within an instance method. In Python, the equivalent is 'self' and must be included explicitly in method definitions.
Step-by-step explanation:
The name of the variable that is usually used to refer to the current instance in an instance method is this. In many programming languages, such as Java, C++, and JavaScript, this is a reference variable that points to the current object. It is used within an instance method to access fields and methods of the current object. For example, in Java, you might see a method that looks like this:
public void setName(String name) {
this.name = name;
}
In this case, this.name refers to the name property of the current object, and name refers to the parameter passed to the method. It's important to note that in other programming languages, such as Python, the equivalent variable is named self, and it must be explicitly declared in every instance method's parameter list.The name of the variable that is usually used to refer to the current instance in an instance method is this. In object-oriented programming languages such as Java and C++, this is a keyword that represents the current object. It is used to access the properties and methods of the current instance.