Example usage for java.io Reader read

Introduction

In this page you can find the example usage for java.io Reader read.

Prototype

public int read(char cbuf[]) throws IOException

Source Link

Document

Reads characters into an array.

Usage

From source file:Main.java

private static String inputStreamToString(InputStream stream) throws IOException {
    Reader reader = new InputStreamReader(stream, "UTF-8");
    StringBuilder sb = new StringBuilder();
    char[] buffer = new char[1024];
    int num;//from w  w w  . j a v  a2  s  .c  o m
    while (0 < (num = reader.read(buffer))) {
        sb.append(buffer, 0, num);
    }
    return sb.toString();
}

From source file:Main.java

/**
 * Transfers all characters that can be read from <tt>in</tt> to
 * <tt>out</tt>.// w  w w  . jav  a  2 s  .  c o m
 *
 * @param in The Reader to read characters from.
 * @param out The Writer to write characters to.
 * @return The total number of characters transfered.
 */
public static final long transfer(Reader in, Writer out) throws IOException {
    long totalChars = 0;
    int charsInBuf = 0;
    char[] buf = new char[4096];

    while ((charsInBuf = in.read(buf)) != -1) {
        out.write(buf, 0, charsInBuf);
        totalChars += charsInBuf;
    }

    return totalChars;
}

From source file:de.micromata.genome.util.text.StandardHeaderSplitter.java

/**
 * Slurp./*  w w w .  j a va  2 s . c  o  m*/
 *
 * @param in the in
 * @return the string
 * @throws IOException Signals that an I/O exception has occurred.
 */
public static String slurp(Reader in) throws IOException {
    StringBuilder sb = new StringBuilder();
    char[] b = new char[4096];
    for (int n; (n = in.read(b)) != -1;) {
        sb.append(new String(b, 0, n));
    }
    return sb.toString();
}

From source file:com.swordlord.gozer.file.GozerFileLoader.java

public static String convertInputStreamToString(InputStream is) {
    String strReturn = "";

    if (is != null) {
        Writer writer = new StringWriter();

        char[] buffer = new char[1024];
        try {/* ww w . j  a v  a 2s . com*/
            Reader reader = new BufferedReader(new InputStreamReader(is, "UTF-8"));

            int n;
            while ((n = reader.read(buffer)) != -1) {
                writer.write(buffer, 0, n);
            }

            reader.close();
            strReturn = writer.toString();
            writer.close();
        } catch (UnsupportedEncodingException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        } finally {

        }
    }

    return strReturn;
}

From source file:Main.java

public static String readerToString(Reader reader) throws IOException {
    StringBuilder builder = new StringBuilder();
    int bufferSize = 4096;
    char[] buf = new char[bufferSize];

    int readed;//from  w  w  w  . j av  a 2s  .  co  m
    while ((readed = reader.read(buf)) > 0) {
        builder.append(buf, 0, readed);
    }

    return builder.toString();
}

From source file:net.sf.keystore_explorer.utilities.io.CopyUtil.java

/**
 * Copy data from a reader to a writer and do not close I/O.
 *
 * @param reader/* w w w . ja v  a  2 s .  c o  m*/
 *            Reader
 * @param writer
 *            Writer
 * @throws IOException
 *             If an I/O problem occurred
 */
public static void copy(Reader reader, Writer writer) throws IOException {
    char[] buffer = new char[2048];
    int i;
    while ((i = reader.read(buffer)) > 0) {
        writer.write(buffer, 0, i);
    }
}

From source file:llc.rockford.webcast.StringUtils.java

public static String convertStreamToString(InputStream is) throws IOException {
    /*//from www. ja va  2s .c o  m
     * To convert the InputStream to String we use the Reader.read(char[]
     * buffer) method. We iterate until the Reader return -1 which means
     * there's no more data to read. We use the StringWriter class to
     * produce the string.
     */
    if (is != null) {
        Writer writer = new StringWriter();

        char[] buffer = new char[1024];
        try {
            Reader reader = new BufferedReader(new InputStreamReader(is, "UTF-8"));
            int n;
            while ((n = reader.read(buffer)) != -1) {
                writer.write(buffer, 0, n);
            }
        } finally {
            is.close();
        }
        return writer.toString();
    } else {
        return "";
    }
}

From source file:Main.java

static String readFully(Reader reader) throws IOException {
    try {/*from ww w. j  a va  2 s.c o  m*/
        StringWriter writer = new StringWriter();
        char[] buffer = new char[1024];
        int count;
        while ((count = reader.read(buffer)) != -1) {
            writer.write(buffer, 0, count);
        }
        return writer.toString();
    } finally {
        reader.close();
    }
}

From source file:com.scorpio4.util.io.StreamCopy.java

public static void copy(Reader input, Writer output, int buffer_size) throws IOException {
    char[] buffer = new char[buffer_size + 16];
    int n = 0;/*w  w  w.ja  va  2 s. com*/
    while (-1 != (n = input.read(buffer))) {
        output.write(buffer, 0, n);
        output.flush();
    }
    output.flush();
}

From source file:Main.java

/**
 * Read and return the entire contents of the supplied {@link File}.
 * /*  w  w  w .  j  a  v a2s  .c  o m*/
 * @param file the file containing the information to be read; may be null
 * @return the contents, or an empty string if the supplied reader is null
 * @throws IOException if there is an error reading the content
 */
public static String read(File file) throws IOException {
    if (file == null)
        return "";
    StringBuilder sb = new StringBuilder();
    boolean error = false;
    Reader reader = new FileReader(file);
    try {
        int numRead = 0;
        char[] buffer = new char[1024];
        while ((numRead = reader.read(buffer)) > -1) {
            sb.append(buffer, 0, numRead);
        }
    } catch (IOException e) {
        error = true; // this error should be thrown, even if there is an error closing reader
        throw e;
    } catch (RuntimeException e) {
        error = true; // this error should be thrown, even if there is an error closing reader
        throw e;
    } finally {
        try {
            reader.close();
        } catch (IOException e) {
            if (!error)
                throw e;
        }
    }
    return sb.toString();
}