Java编程基础8:控制台输入与数据类型

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"《Java编程入门教程8》由Y.Daniel Liang 编写,是一份针对Java初学者的高清视频课程或教材,专为那些希望掌握基本Java知识的人设计。本教程涵盖了Java编程的基础要素,从控制台输入和输出到数据类型、算术运算、逻辑运算以及流程控制结构。 首先,课程介绍了如何通过`Scanner`类从`System.in`获取用户输入,包括整型(`int`、`long`)、浮点型(`float`)、双精度浮点型(`double`)、字符型(`char`)以及布尔型(`boolean`)。这些基本数据类型在Java中分别占用不同位数,例如,`byte`是8位,而`long`则是64位,理解这些数据类型对于编写高效、可读的代码至关重要。 接下来,讲解了Java中的关系运算符,如`<`、`<=`、`>`、`>=`、`==`和`!=`,用于比较两个值的大小和相等性。逻辑运算符`&&`(短路与)、`||`(短路或)、`!`(非)以及`^`(异或)用于处理条件表达式的逻辑组合。 算术运算符包括加法`+`、减法`-`、乘法`*`、除法`/`和取余`%`。还有自增和自减操作符`++`和`--`,它们可以用于预前操作(放在变量前面)和后置操作(放在变量后面),这在循环和表达式中非常有用。 课程还涉及了`switch`语句,这是一种多分支选择结构,根据给定的整数值执行相应的代码块,并通过`break`语句跳出。对于更复杂的条件判断,`switch`提供了简洁的解决方案。 最后,教学内容包括各种赋值运算符,如`=`进行简单赋值,而`+=`、`-=`等则是复合赋值,用于在一次操作中完成计算和赋值。这些运算符是构建程序流程的关键组成部分。 整个课程还提供了Pearson高等教育公司的官方网站www.pearsonhighered.com/liang作为学习和参考的资源,为学习者提供了实践练习和深入研究的平台。《Introduction to Java Programming 8》是学习Java编程语言的理想起点,帮助读者建立起扎实的基础并逐步提升编程技能。"
2012-07-18 上传
This book is a brief version of Introduction to Java Programming, Comprehensive Version, 8E. This version is designed for an introductory programming course, commonly known as CS1. This version contains the first twenty chapters in the comprehensive version. This book uses the fundamentals-first approach and teaches programming concepts and techniques in a problem-driven way. The fundamentals-first approach introduces basic programming concepts and techniques before objects and classes. My own experience, confirmed by the experiences of many colleagues, demonstrates that new programmers in order to succeed must learn basic logic and fundamental programming techniques such as loops and stepwise refinement. The fundamental concepts and techniques of loops, methods, and arrays are the foundation for programming. Building the foundation prepares students to learn object-oriented programming, GUI, database, and Web programming. Problem-driven means focused on problem-solving rather than syntax. We make introductory programming interesting by using interesting problems. The central thread of this book is on solving problems. Appropriate syntax and library are introduced to support the writing of a program for solving the problems. To support teaching programming in a problemdriven way, the book provides a wide variety of problems at various levels of difficulty to motivate students. In order to appeal to students in all majors, the problems cover many application areas in math, science, business, financials, gaming, animation, and multimedia. 精美文字版pdf电子书。