week 4 Java input output

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What package contain most input out put tools?
öğrenmeye başla
java. io
what is a stream?
öğrenmeye başla
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?
öğrenmeye başla
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
öğrenmeye başla
Input Stream classes; Output Stream classes.
give example of two Character stream classes
öğrenmeye başla
Reader classes; Writer classes.
_______convert a bite of input to a 16 bit character.
öğrenmeye başla
Readers convert a bite of input to a 16 bit character.
_____convert a 16 bit character to a bite.
öğrenmeye başla
Writers convert a 16 bit character to a bite.
what arte the 3 streams provided by the system class?
öğrenmeye başla
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
öğrenmeye başla
There are 8 reader (BufferedWriter, ...) in the java. io package
What can the Scanner class do?
öğrenmeye başla
a simple text scanner which can parse primitive types and strings
What package is scanner class found within?
öğrenmeye başla
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?
öğrenmeye başla
Finds and returns the next complete token from this scanner.
What does int nextInt() do?
öğrenmeye başla
Scans the next token of the input as an int.
What does double nextDouble() do?
öğrenmeye başla
Scans the next token of the input as a double.
what does skip(String pattern) do?
öğrenmeye başla
Skips input that matches a pattern constructed from the specified string.

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