Character Streams

The Java platform stores character values using Unicode conventions. Character stream I/O automatically translates this internal format to and from the local character set. In Western locales, the local character set is usually an 8-bit superset of ASCII.

For most applications, I/O with character streams is no more complicated than I/O with byte streams. Input and output done with stream classes automatically translates to and from the local character set. A program that uses character streams in place of byte streams automatically adapts to the local character set and is ready for internationalization (translating program output to different local languages) — all without extra effort by the programmer.
Consider the following code for using character streams


public class CharStreamsExample {
    public static void main(String[] args) throws IOException {

        FileReader inputStream = null;
        FileWriter outputStream = null;

        try {
            inputStream = new FileReader("source.txt");
            outputStream = new FileWriter("target.txt");

            int c;
            while ((c = != -1) {
        } finally {
            if (inputStream != null) {
            if (outputStream != null) {

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