TAILIEUCHUNG - Lecture Fundamentals of computing 1: Lecture 3 - Duy Tan University

Lecture Fundamentals of computing 1 - Lecture 3 introduce the console Input and Output. This chapter presents the following content: Console output, using imported class, scanner class, common pitfalls. Inviting you refer. | Lecture Title: Console Input and Output Fundamentals of Computing 1 Agenda Console output Using imported class Scanner class Common pitfalls ask them, how might the computer store "hi" using binary digits? (some kind of mapping; ASCII) for console output is an object that is part of the Java language println is a method invoked by the object that can be used for console output The data to be output is given as an argument in parentheses A plus sign is used to connect more than one item Every invocation of println ends a line of output ("The answer is " + 42); Console Input What if we want to let the users choose any values they want to use ? We can prompt the user by console (keyboard) input Console Input Import instruction Create Scanner object Read a first integer and assign it to variable a Read a second integer and assign it to variable b Agenda Console output Using imported class Scanner class Common pitfalls ask them, how might the computer store "hi" using binary digits? (some kind of mapping; ASCII) Importing Packages and Classes Libraries in Java are called packages A package is a collection of classes that is stored in a manner that makes it easily accessible to any program In order to use a class that belongs to a package, the class must be brought into a program using an import statement Classes found in the package are imported automatically into every Java program import ; // import theNumberFormat class only import .*; //import all the classes in package Using * Agenda Console output Using imported class Scanner class Common pitfalls ask them, how might the computer store "hi" using binary digits? (some kind of mapping; ASCII) Console Input Using the Scanner Class Starting with version , Java includes a class for doing simple keyboard input named the Scanner class In order to use the Scanner class, a program must include the .

• Kỹ thuật lập trình
• Fundamentals of computing
• Lecture Fundamentals of computing 1
• Console output
• Scanner class
• Common pitfalls
• Imported class
• Mobile computing
• Wireless and mobile computing
• Services data
• Wireless communication
• Transmission fundamentals
• Mobile computing transmission fundamentals
• Developing programming skills
• Data type
• Conditional expression
• Computer vocabulary
• Java programming
• Installing Eclipse
• Basic Java programs
• Structured algorithms
• Data types
• Number primitive types
• Mixing types
• Relational expressions
• If statements
• Switch statements
• Random question
• Random answer
• Reference semantics
• Arrays for tallying
• Arrays as parameter
• The String class
• Immutable string
• String comparison
• Java OOPs
• Method overloading
• Object Oriented Programming System
• Syntax of inheritance
• Types of inheritance
• Method overriding
• Abstract class
• Abstract method
• Extended interface
• Java Access Modifier
• Static keyword
• Final keyword
• Exception handing
• Multiple catch block
• Nested try statements
• File processing
• Methods of class file
• File paths
• Graphic User Interface
• Layout manager
• Mouse events
• Inner class
• Static inner class
• Anonymous inner class
• Discovering computers fundamentals
• Computers fundamentals
• Enterprise Computing
• Information systems in the enterprise
• Enterprise wide technologies
• Cloud computing
• Frequency period relationship
• Signals for conveying information
• Digital data transmission
• Programming in C++
• Lecture Programming in C++
• History of electronic computers
• Computing fundamentals
• Memory access
• Central processing unit