By Jim Keogh
ISBN-10: 0071470964
ISBN-13: 9780071470964
ISBN-10: 0072254548
ISBN-13: 9780072254549
I picked this ebook up after I acquired dumped within the deep finish, desiring to switch Java code in a few NIST picture processing software program. the great - i may stick with the examples simply - i am a hundred pages in in a number of hours, and i am simply studying the specifics of Java constitution that i have to begin enhancing code.
The undesirable - it feels like the booklet used to be robotically spell-checked, yet no longer grammar-checked. there are various sentences, out and in of the code examples, the place I simply needed to shake my head. One instance used to be flat out mistaken - on web page ninety two, the place the it says that an index is a bunch from 0 to "1 minus the utmost variety of components within the array". this can provide you with a non-positive quantity. no longer a global ender, yet catching such a lot of of those on a primary skimming cross makes me a section leery of the way stable the remainder of the examples should be.
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Additional resources for Java Demystified
Sample text
Boolean Data Type The Boolean data type group consists of the boolean data type. The boolean data type tells Java to reserve memory sufficient to store a Boolean value. A Boolean value is either true or false. You should use a boolean data type whenever your program needs to store one of two possible values that represents the state of a condition, such as on/off, true/false, yes/no, or 0/1. Java will then decide how to efficiently store this condition in memory. Casting Data Types Sometimes your program will call a method that performs a specific functionality and then returns a value to your program.
The combination of the escape character and the symbol used to represent the nonprintable character is called an escape sequence. The escape sequence is also referred to as a control sequence or control character because nonprintable characters are commonly used to control the behavior of programs and sometimes hardware. The follow example illustrates how to write an escape sequence in a program. Here, the newline escape sequence (\n) is used to place the second portion of the text on its own line.
You’ll learn more about these in the next chapter. In this example, two Boolean literals are assigned to variables. You’ll learn about variables later in this chapter. For now, think of a variable as an empty box into which your program places a Boolean value. The box is actually computer memory that is identified by a label. We use box1 and box2 as labels for memory in the following example: class Demo { public static void main( String args[]) { boolean box1 = true; boolean box2 = false; } } Character Literals A character is a letter, number, punctuation, or any other character defined in Unicode.
Java Demystified by Jim Keogh
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