week 4 Java input output

What package contain most input out put tools?

java. io

what is a stream?

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?

Byte stream and Character stream.

What is a byte stream?

Byte oriented I/O operations are needed to handle binary files that use 8-bit codes.

what is a character stream?

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

Input Stream classes; Output Stream classes.

give example of two Character stream classes

Reader classes; Writer classes.

_______convert a bite of input to a 16 bit character.

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

_____convert a 16 bit character to a bite.

Writers convert a 16 bit character to a bite.

what arte the 3 streams provided by the system class?

System. in; system. out; system. err

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

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

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

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

What can the Scanner class do?

a simple text scanner which can parse primitive types and strings

What package is scanner class found within?

java. util

what does the scanner constructor look like?

public Scanner(InputStream source) inputstream can be file or string etc

what does the scanner do?

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?

Finds and returns the next complete token from this scanner.

What does int nextInt() do?

Scans the next token of the input as an int.

What does double nextDouble() do?

Scans the next token of the input as a double.

what does skip(String pattern) do?

Skips input that matches a pattern constructed from the specified string.