Example usage for java.io Reader read

Introduction

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

Prototype

public abstract int read(char cbuf[], int off, int len) throws IOException;

Source Link

Document

Reads characters into a portion of an array.

Usage

From source file:Main.java

public static void main(String[] args) {

    String s = "tutorial from java2s.com";

    Reader reader = new StringReader(s);

    // create a char array to read chars into
    char cbuf[] = new char[5];

    try {//  w  w w  .  j  a  va2s . c  om
        // read characters into a portion of an array.
        System.out.println(reader.read(cbuf, 0, 5));

        System.out.println(cbuf);

        reader.close();
    } catch (IOException ex) {
        ex.printStackTrace();
    }
}

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From source file:com.foxykeep.parcelablecodegenerator.Main.java

public static void main(String[] args) {

    File fileInputDir = new File("input");
    if (!fileInputDir.exists() || !fileInputDir.isDirectory()) {
        return;//from w  w w.  j a va2s .  c o  m
    }

    ArrayList<FileInfo> fileInfoList = new ArrayList<FileInfo>();
    findJsonFiles(fileInputDir, null, fileInfoList);

    StringBuilder sb = new StringBuilder();

    // For each file in the input folder
    for (FileInfo fileInfo : fileInfoList) {
        String fileName = fileInfo.file.getName();
        System.out.println("Generating code for " + fileName);

        char[] buffer = new char[2048];
        sb.setLength(0);
        Reader in;
        try {
            in = new InputStreamReader(new FileInputStream(fileInfo.file), "UTF-8");
            int read;
            do {
                read = in.read(buffer, 0, buffer.length);
                if (read != -1) {
                    sb.append(buffer, 0, read);
                }
            } while (read >= 0);
        } catch (UnsupportedEncodingException e) {
            e.printStackTrace();
            return;
        } catch (FileNotFoundException e) {
            e.printStackTrace();
            return;
        } catch (IOException e) {
            e.printStackTrace();
            return;
        }

        String content = sb.toString();
        if (content.length() == 0) {
            System.out.println("file is empty.");
            return;
        }

        try {
            JSONObject root = new JSONObject(content);

            // Classes generation
            String classPackage, className, superClassPackage, superClassName;
            boolean isSuperClassParcelable, hasSubClasses, isAbstract;

            classPackage = root.getString("package");
            className = root.getString("name");
            superClassPackage = JsonUtils.getStringFixFalseNull(root, "superClassPackage");
            superClassName = JsonUtils.getStringFixFalseNull(root, "superClassName");
            isSuperClassParcelable = root.optBoolean("isSuperClassParcelable");
            hasSubClasses = root.optBoolean("hasSubClasses");
            if (hasSubClasses) {
                isAbstract = root.optBoolean("isAbstract");
            } else {
                isAbstract = false;
            }

            JSONArray fieldJsonArray = root.optJSONArray("fields");
            ArrayList<FieldData> fieldDataList;
            if (fieldJsonArray != null) {
                fieldDataList = FieldData.getFieldsData(fieldJsonArray);
            } else {
                fieldDataList = new ArrayList<FieldData>();
            }

            // Parcelable generation
            ParcelableGenerator.generate(fileInfo.dirPath, classPackage, className, superClassPackage,
                    superClassName, isSuperClassParcelable, hasSubClasses, isAbstract, fieldDataList);
        } catch (JSONException e) {
            e.printStackTrace();
            return;
        }
    }

}

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From source file:Main.java

/**
 * Converts an input stream to a string, using UTF-8 encoding.
 *//*  w w  w.  j  a va 2  s.  co m*/
public static String getStringFromStream(InputStream inputStream) throws IOException {
    final int bufferSize = 1024;
    final char[] buffer = new char[bufferSize];
    final StringBuilder out = new StringBuilder();
    Reader in = new InputStreamReader(inputStream, "UTF-8");
    for (;;) {
        int rsz = in.read(buffer, 0, buffer.length);
        if (rsz < 0)
            break;
        out.append(buffer, 0, rsz);
    }
    return out.toString();
}

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From source file:Main.java

public static final int readerTryRead(Reader reader, char[] cc, int len) throws IOException {
    int r;/*www. j av a2s.  com*/
    int t = 0;
    while ((r = reader.read(cc, t, len - t)) >= 0) {
        t += r;
        if (t == len) {
            break;
        }
    }
    return t;
}

---

From source file:Main.java

private static String toString(InputStream is) throws Exception {
    final char[] buffer = new char[0x10000];
    StringBuilder out = new StringBuilder();
    Reader in = new InputStreamReader(is, "UTF-8");
    int read;//from ww w  .  j  a v  a 2  s  . c  o  m
    do {
        read = in.read(buffer, 0, buffer.length);
        if (read > 0) {
            out.append(buffer, 0, read);
        }
    } while (read >= 0);
    String result = out.toString();

    is.close();

    return result;
}

---

From source file:Main.java

public static String slurp(final InputStream is, final int bufferSize) {
    final char[] buffer = new char[bufferSize];
    final StringBuilder out = new StringBuilder();
    try {//from   www  .j a v  a 2s  .  c  o m
        final Reader in = new InputStreamReader(is, "UTF-8");
        try {
            for (;;) {
                int rsz = in.read(buffer, 0, buffer.length);
                if (rsz < 0)
                    break;
                out.append(buffer, 0, rsz);
            }
        } finally {
            in.close();
        }
    } catch (Exception ex) {
    }
    return out.toString();
}

---

From source file:Main.java

private static String stringFromInputStream(InputStream is) throws IOException {
    char[] buf = new char[1024];
    StringBuilder out = new StringBuilder();

    Reader in = new InputStreamReader(is, "UTF-8");

    int bin;/*from   ww  w. j  a  v  a  2s . co m*/
    while ((bin = in.read(buf, 0, buf.length)) >= 0) {
        out.append(buf, 0, bin);
    }

    return out.toString();
}

---

From source file:Main.java

public static String toString(InputStream is) {
    StringBuilder out = new StringBuilder();
    char[] buffer = new char[512];
    if (is != null) {
        try {//from w ww.  j  av  a2  s.c o m
            Reader in = new InputStreamReader(is, "UTF-8");
            try {
                int n;
                while ((n = in.read(buffer, 0, buffer.length)) >= 0) {
                    out.append(buffer, 0, n);
                }
            } finally {
                in.close();
            }
        } catch (IOException ex) {
            out.append("error");
        }
    }
    return out.toString();
}

---

From source file:Main.java

public static final String inputStreamToString(final InputStream is) throws IOException {
    final char[] buffer = new char[0x10000];
    final StringBuilder sb = new StringBuilder();
    final Reader in = new InputStreamReader(is, "utf-8");
    try {/*from   w ww. j ava2s.c om*/
        int read;
        do {
            read = in.read(buffer, 0, buffer.length);
            if (read > 0) {
                sb.append(buffer, 0, read);
            }
        } while (read >= 0);
    } finally {
        closeSilently(in);
    }
    return sb.toString();
}

---

From source file:edu.mit.media.funf.IOUtils.java

public static String inputStreamToString(InputStream is, String encoding) throws IOException {
    final char[] buffer = new char[0x10000];
    StringBuilder out = new StringBuilder();
    Reader in = new InputStreamReader(is, encoding);
    int read;//from  w w  w . j av a  2 s.c  o m
    do {
        read = in.read(buffer, 0, buffer.length);
        if (read > 0) {
            out.append(buffer, 0, read);
        }
    } while (read >= 0);
    return out.toString();
}

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