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Primitive Types, Strings, and Console I/O Chapter 2 Objectives ã become familiar with Java primitive types (numbers, characters, etc.) ã learn about assignment statements and expressions ã learn about strings ã become familiar with classes, methods, and objects ã learn about simple keyboard input and screen output Outline ã Primitive Types and Expressions ã The Class String ã Keyboard and Screen I/O ã Documentation and Style Variables and Values ã Variables store data such as numbers and letter
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  Primitive Types, Strings, andConsole I/O Chapter 2  Objectives ã become familiar with Java primitive types(numbers, characters, etc.)ã learn about assignment statements andexpressionsã learn about stringsã become familiar with classes, methods, andobjectsã learn about simple keyboard input and screenoutput  Outline ã Primitive Types and Expressionsã The Class  String ã Keyboard and Screen I/Oã Documentation and Style  Variables and Values ã  Variables  store data such as numbers andletters.  – Think of them as places to store data. – They are implemented as memory locations. ã The data stored by a variable is called its value.  – The value is stored in the memory location. ã Its value can be changed.
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