week 4 Java input output

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Question English
Answer English

What package contain most input out put tools?
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java. io

what is a stream?
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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.

what a re the 2 kinds of streams?
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Byte stream and Character stream.

What is a byte stream?
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Byte oriented I/O operations are needed to handle binary files that use 8-bit codes.

what is a character stream?
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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).

give example of two byte stream classes
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Input Stream classes; Output Stream classes.

give example of two Character stream classes
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Reader classes; Writer classes.

_______convert a bite of input to a 16 bit character.
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Readers convert a bite of input to a 16 bit character.

_____convert a 16 bit character to a bite.
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Writers convert a 16 bit character to a bite.

what arte the 3 streams provided by the system class?
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System. in; system. out; system. err

There are 9 reader (______, ...) in the java. io package
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There are 9 reader (______, ...) in the java. io package

There are 8 reader (BufferedWriter, ...) in the java. io package
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There are 8 reader (BufferedWriter, ...) in the java. io package

What can the Scanner class do?
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a simple text scanner which can parse primitive types and strings

What package is scanner class found within?
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java. util

what does the scanner constructor look like?
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public Scanner(InputStream source) inputstream can be file or string etc

what does the scanner do?
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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.

what does String next() do?
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Finds and returns the next complete token from this scanner.

What does int nextInt() do?
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Scans the next token of the input as an int.

What does double nextDouble() do?
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Scans the next token of the input as a double.

what does skip(String pattern) do?
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Skips input that matches a pattern constructed from the specified string.


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