Java Concepts for Java 5 and 6, 5th Edition by Cay S. Horstmann

By Cay S. Horstmann

If you happen to actually need to grasp Java, it isn't sufficient to grasp the code. you need to start to imagine like a programmer, and during this most up-to-date variation of his bestselling consultant, Java innovations, programming guru Cay Horstmann indicates you the way. up to date to combine Java 6, Java suggestions, 5th version introduces you to basic programming innovations and layout abilities which are the most important to studying how you can software. Drawing on his decades of expertise as knowledgeable programmer and instructor, Horstmann brings out crucial parts of computing, challenge fixing, and application layout.

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Extra resources for Java Concepts for Java 5 and 6, 5th Edition

Sample text

The numbers describe the rectangle (see Figure 10). Each rectangle is described by the x- and y-coordinates of its top-left corner, its width, and its height. info Java Concepts, 5th Edition Figure 9 Rectangular Shapes Figure 10 Rectangle Objects 44 It is very important that you understand this distinction. In the computer, a Rectangle object is a block of memory that holds four numbers, for example x = 5, y = 10, width = 20, height = 30. In the imagination of the programmer who uses a Rectangle object, the object describes a geometric figure.

25. A logic error causes a program to take an action that the programmer did not intend. You must test your programs to find logic errors. 26. An editor is a program for entering and modifying text, such as a Java program. 27. The Java compiler translates source code into class files that contain instructions for the Java virtual machine. 28. The Java virtual machine loads program instructions from class files and library files. FURTHER READING 1. net/applet/ The web site for the jmol applet for visualizing molecules.

Println(greeting) Some methods require multiple explicit parameters, others don't require any explicit parameters at all. An example of the latter is the length method of the String class (see Figure 6). All the information that the length method requires to do its job—namely, the character sequence of the string—is stored in the implicit parameter object. info Java Concepts, 5th Edition The length method differs from the println method in another way: it has an output. We say that the method returns a value, namely the number of characters in the string.

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