THE Java™ Programming Language, Fourth Edition
ArrayIndexOutOfBoundsException thrown when you access outside the bounds of an array tells you that your program calculated an i ...
names for classes, someone else is likely to use that name for a different purpose. If you use simple, descriptive names, the pr ...
Classes are always part of a package. A package is named by providing a package declaration at the top of the source file: packa ...
1.18. Other Topics Briefly Noted There are several other features that we mention briefly here and cover later in more detail: T ...
The "how" of an object is defined by its class, which defines the implementation of the methods the object supports. Each object ...
2.1.2. Class Modifiers A class declaration can be preceded by class modifiers that give the class certain properties: annotatio ...
A field cannot be both final and volatile. When multiple modifiers are applied to the same field declaration, we recommend using ...
System.out.println(Body.nextID); The use of System.out itself illustrates accessing a static field. When a static member of a cl ...
If the property is merely infrequently changed rather than truly immutable then a final field is not appropriate. If the value o ...
2.4. Creating Objects In this first version of Body, objects that represent particular celestial bodies are created and initiali ...
2.5. Construction and Initialization A newly created object is given an initial state. Fields can be initialized with a value wh ...
The initializers for name and orbits set them to reasonable values. Therefore, when the constructor returns from the following i ...
Some classes always require that the creator supply certain kinds of data. For example, your application might require that all ...
parameter list and before the opening curly brace of the constructor body. If a tHRows clause exists then any method that invoke ...
2.5.3. Static Initialization The static fields of a class can have initializers as we have already seen. But in addition we can ...
A method declaration consists of two parts: the method header and the method body. The method header consists of an optional set ...
In the BodyPrint example we invoke the println method on the object referred to by the static reference System.out and passing a ...
Exercise 2.10: Add a toString method to Vehicle. Exercise 2.11: Add a toString method to LinkedList. 2.6.3. Methods with Variabl ...
you invoke a method, the compiler will match each supplied argument to a named parameter. If the compiler finds a sequence param ...
public class BankAccount { private long number; // account number private long balance; // current balance (in cents) public Per ...
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