By Walter J. Savitch
For undergraduate scholars in computing device technological know-how and desktop Programming classes. Praised for supplying a fascinating stability of considerate examples and explanatory dialogue, best-selling writer Walt Savitchs clarify innovations and methods in an easy sort utilizing comprehensible language and code more desirable by means of a set of pedagogical instruments. Absolute Java is suitable for either introductory and intermediate programming classes introducing Java.
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Additional resources for Absolute Java (5th Edition)
TIP: Error Messages bug debugging syntax error run-time error logic error A mistake in a program is called a bug. For this reason, the process of eliminating mistakes in your program is called debugging. There are three commonly recognized types of bugs or errors, which are known as syntax errors, run-time errors, and logic errors. Let’s consider them in order. A syntax error is a grammatical mistake in your program; that is, a mistake in the allowed arrangement of words and punctuations. If you violate one of these rules—for example, by omitting a required punctuation—it is a syntax error.
These languages are called high-level languages. The language that the computer can directly understand is called machine language. Machine language or any language similar to machine language is called a low-level language. A program written in a high-level language, such as Java, must be translated into a program in machine language before the program can be run. The program that does the translating (or at least most of the translating) is called a compiler and the translation process is called compiling.
When adding parentheses, Java follows rules called precedence rules 4Although we discourage the practice, you can use values and variables of type char in arithmetic expressions using operators such as +. If you do so, the char values and variables will contribute to the expression as if they were of type int. Expressions and Assignment Statements that determine how the operators, such as + and *, are enclosed in parentheses. These precedence rules are similar to rules used in algebra. For example, base + rate * hours is evaluated by Java as if it were parenthesized as follows: base + (rate * hours) So, the multiplication will be done before the addition.
Absolute Java (5th Edition) by Walter J. Savitch