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Lab 6.1 Creating a Door class Object-oriented languages like Java are designed to make it easy for programmers to implement software versions of real-world objects. In learning Java, an important skill to master is the ability t represent an object in code. Objects that we model are described using Java classes, so we have chosen to begin this lab by modeling a very simple, everyday object: a door. Write the code to create a class that models a door object. Don't worry about the internal details jus yet. Just give the class a name and an empty body for the moment. We will add more to the class shortly. Lab 6.2 Adding Properties When modeling an object as a class, we also need to describe the properties it possesses. An everyday object that we wish to model always has one or more properties that describe it. For instance a door object might have a name like "Front" or "Side" to distinguish it from other doors. Another property that could describe a door is its state: "open" or "closed". Properties of objects are described in code by using nouns like "state" or "name" to create instance variables that hold values Add instance variables to your Door class for the name of the door and its state. Experience has shown that we almost always want to limit the visibility of instance variables inside the same class, make the access modifiers of state and name private. And because the state and name propertie have values like "open" or "front", let the instance variables you create be of type String.

Lab 6.1 Creating a Door class Object-oriented languages like Java are designed to make it easy for programmers to implement software versions of real-world objects. In learning Java, an important skill to master is the ability t represent an object in code. Objects that we model are described using Java classes, so we have chosen to begin this lab by modeling a very simple, everyday object: a door. Write the code to create a class that models a door object. Don't worry about the internal details jus yet. Just give the class a name and an empty body for the moment. We will add more to the class shortly. Lab 6.2 Adding Properties When modeling an object as a class, we also need to describe the properties it possesses. An everyday object that we wish to model always has one or more properties that describe it. For instance a door object might have a name like "Front" or "Side" to distinguish it from other doors. Another property that could describe a door is its state: "open" or "closed". Properties of objects are described in code by using nouns like "state" or "name" to create instance variables that hold values Add instance variables to your Door class for the name of the door and its state. Experience has shown that we almost always want to limit the visibility of instance variables inside the same class, make the access modifiers of state and name private. And because the state and name propertie have values like "open" or "front", let the instance variables you create be of type String.

Database System Concepts
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
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Java language problem. Please help, thank you.

Lab 6.1 Creating a Door class Object-oriented languages like Java are designed to make it easy for programmers to implement software versions of real-world objects. In learning Java, an important skill to master is the ability to represent an object in code. Objects that we model are described using Java classes, so we have chosen to begin this lab by modeling a very simple, everyday object: a door. Write the code to create a class that models a door object. Don't worry about the internal details just yet. Just give the class a name and an empty body for the moment. We will add more to the class shortly. | Lab 6.2 Adding Properties When modeling an object as a class, we also need to describe the properties it possesses. An everyday object that we wish to model always has one or more properties that describe it. For instance a door object might have a name like "Front" or "Side" to distinguish it from other doors. Another property that could describe a door is its state: "open" or "closed". Properties of objects are described in code by using nouns like "state" or "name" to create instance variables that hold values. Add instance variables to your Door class for the name of the door and its state. Experience has shown that we almost always want to limit the visibility of instance variables inside the same class, so make the access modifiers of state and name private. And because the state and name properties have values like "open" or "front", let the instance variables you create be of type String.
Transcribed Image Text:Lab 6.1 Creating a Door class Object-oriented languages like Java are designed to make it easy for programmers to implement software versions of real-world objects. In learning Java, an important skill to master is the ability to represent an object in code. Objects that we model are described using Java classes, so we have chosen to begin this lab by modeling a very simple, everyday object: a door. Write the code to create a class that models a door object. Don't worry about the internal details just yet. Just give the class a name and an empty body for the moment. We will add more to the class shortly. | Lab 6.2 Adding Properties When modeling an object as a class, we also need to describe the properties it possesses. An everyday object that we wish to model always has one or more properties that describe it. For instance a door object might have a name like "Front" or "Side" to distinguish it from other doors. Another property that could describe a door is its state: "open" or "closed". Properties of objects are described in code by using nouns like "state" or "name" to create instance variables that hold values. Add instance variables to your Door class for the name of the door and its state. Experience has shown that we almost always want to limit the visibility of instance variables inside the same class, so make the access modifiers of state and name private. And because the state and name properties have values like "open" or "front", let the instance variables you create be of type String.
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