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What package contain most input out put tools? 开始学习
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开始学习
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what is a stream? A stream can be defined as a sequence of data. there are two kinds of Streams. InPutStream: The InputStream is used to read data from a source. OutPutStream: the OutputStream is used for writing data to a destination.
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what a re the 2 kinds of streams? 开始学习
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Byte stream and Character stream.
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开始学习
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Byte oriented I/O operations are needed to handle binary files that use 8-bit codes.
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what is a character stream? 开始学习
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Character oriented I/O operations are used to handle text files for which Java uses 16-bit UTF encoding (Unified Transformation Format).
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give example of two byte stream classes 开始学习
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Input Stream classes; Output Stream classes.
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give example of two Character stream classes 开始学习
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Reader classes; Writer classes.
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_______convert a bite of input to a 16 bit character. 开始学习
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Readers convert a bite of input to a 16 bit character.
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_____convert a 16 bit character to a bite. 开始学习
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Writers convert a 16 bit character to a bite.
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what arte the 3 streams provided by the system class? 开始学习
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System. in; system. out; system. err
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There are 9 reader (______, ...) in the java. io package 开始学习
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There are 9 reader (______, ...) in the java. io package
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There are 8 reader (BufferedWriter, ...) in the java. io package 开始学习
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There are 8 reader (BufferedWriter, ...) in the java. io package
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What can the Scanner class do? 开始学习
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a simple text scanner which can parse primitive types and strings
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What package is scanner class found within? 开始学习
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what does the scanner constructor look like? 开始学习
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public Scanner(InputStream source) inputstream can be file or string etc
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what does the scanner do? 开始学习
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breaks its input into tokens using a delimiter pattern (whitespace). The resulting tokens may then be converted into values of different types using various next() methods.
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what does String next() do? 开始学习
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Finds and returns the next complete token from this scanner.
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What does int nextInt() do? 开始学习
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Scans the next token of the input as an int.
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What does double nextDouble() do? 开始学习
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Scans the next token of the input as a double.
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what does skip(String pattern) do? 开始学习
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Skips input that matches a pattern constructed from the specified string.
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