Module 10 Mastery Check

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wolvesled edited this page Sep 16, 2013 · 1 revision

Why does Java define both byte and character streams? Answer: byte stream for low level support and legacy uses, character stream for internationalization because it is unicode encoded.
Even though console input and output is text-based, why does Java still use byte streams for this purpose?
Show how to open a file for reading bytes. Answer: FileInputStream fin = new FileInputStream("filename.ext")
Show how to open a file for reading characters. Answer: DataInputStream fin = new DataInputStream("filename.ext")
Show how to open a file for random access I/O. Answer: RandomAccessFile raf = new RandomAccessFile("filename.ext", access)
How can you convert a numeric string such as "123.23" into its binary equivalent?
Write a program that copies a text file. In the process, have it convert all spaces into hyphens. Use the byte stream file classes.
Rewrite the program described in question 7 so that it uses the character stream classes.
What type of stream is System.in? Answer: InputStream
What does the read() method of InputStream return when the end of the stream is reached? Answer: -1
What type of stream is used to read binary data? Answer: DataInputStream and DataOutputStream
Reader and Writer are at the top of the ____________class hierarchies. Answer: character stream