Example usage for java.io FileReader FileReader

Introduction

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

Prototype

public FileReader(FileDescriptor fd)

Source Link

Document

Creates a new FileReader , given the FileDescriptor to read, using the platform's java.nio.charset.Charset#defaultCharset() default charset .

Usage

From source file:Main.java

/**
 * Read a text file/*from  w ww . j  a v  a2  s.  c  om*/
 * 
 * @param file
 *            Which is read
 * 
 * @throws IOException
 *             Input/Output exceptions
 * 
 * @return contents of file
 */
public static String readTextFile(File file) throws IOException {
    BufferedReader reader = new BufferedReader(new FileReader(file));
    StringBuilder text = new StringBuilder();
    String line;
    while ((line = reader.readLine()) != null) {
        text.append(line);
        text.append("\n");
    }
    reader.close();
    return text.toString();
}

From source file:Main.java

public static String processFile(BufferedReaderProcessor p) throws IOException {
    try (BufferedReader br = new BufferedReader(new FileReader("lambdasinaction/chap3/data.txt"))) {
        return p.process(br);
    }//from  www  . j  a  va2  s .  c  om

}

From source file:Main.java

public static String readFile(String filePath) {
    File file = new File(filePath);
    StringBuilder fileContent = new StringBuilder("");
    if (file == null || !file.isFile()) {
        return fileContent.toString();
    }/*w  w w. j  ava2  s .  c om*/
    BufferedReader reader = null;

    try {
        reader = new BufferedReader(new FileReader(file));
        String line = null;
        while ((line = reader.readLine()) != null) {
            if (!fileContent.toString().equals("")) {
                fileContent.append("\r\n");
            }
            fileContent.append(line);
        }
        reader.close();
    } catch (Exception e) {
        e.printStackTrace();
    } finally {
        if (reader != null) {
            try {
                reader.close();
            } catch (Exception e1) {
                e1.printStackTrace();
            }
        }
    }
    return fileContent.toString();
}

From source file:Main.java

public static String getDtdAsString(String uri) throws IOException {
    Reader in = null;//w  ww  .ja v  a  2 s.  co m
    if ((uri.startsWith("http")) || (uri.startsWith("ftp")) || (uri.startsWith("file:")))
        in = new InputStreamReader(new URL(uri).openStream());
    else {
        in = new FileReader(uri);
    }
    StringWriter out = new StringWriter();
    char[] buffer = new char[4096];
    for (int count = in.read(buffer); count != -1; count = in.read(buffer)) {
        out.write(buffer, 0, count);
    }
    return out.getBuffer().toString();
}

From source file:Main.java

public static String readDeviceUUID(String devicePath) {
    String uuid = null;//from w  ww  . j a v a  2 s  .co  m
    File root = new File(devicePath);
    if (root.isDirectory()) {
        File uFile = new File(devicePath, ".uuid");
        FileReader reader = null;
        try {
            char[] buffer = new char[36];
            reader = new FileReader(uFile);
            reader.read(buffer, 0, buffer.length);
            uuid = new String(buffer);
            Log.d(TAG, "readDeviceUUID uuid:" + uuid);
            return uuid;
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            if (reader != null) {
                try {
                    reader.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        }
    }
    return uuid;
}

From source file:Main.java

public static String readTextFile(File file) {
    if (!file.exists()) {
        return null;
    }/*from  ww w . ja  v a 2s. c  o m*/

    StringBuilder sb = new StringBuilder();
    BufferedReader br = null;
    try {
        br = new BufferedReader(new FileReader(file));
        String line;
        while ((line = br.readLine()) != null) {
            sb.append(line);
        }
    } catch (FileNotFoundException e) {
        e.printStackTrace();
    } catch (IOException e) {
        e.printStackTrace();
    }

    try {
        br.close();
    } catch (IOException e) {
        e.printStackTrace();
    }

    return sb.toString();
}

From source file:Main.java

/**
 * Read a file and return as a String//ww  w  . j  a  v a 2 s.co m
 *
 * @param file the file to read
 * @return the string representing the contents of the file
 * @throws IOException when reading the file fails
 * @since 0.11.0
 */
public static String readFile(File file) throws IOException {
    Reader reader = new FileReader(file);
    BufferedReader br = new BufferedReader(reader);
    try {
        StringBuilder sb = new StringBuilder();
        for (;;) {
            String line = br.readLine();
            if (line == null) {
                return sb.toString();
            } else {
                sb.append(line);
            }
            sb.append(System.getProperty("line.separator"));
        }
    } finally {
        br.close();
    }
}

From source file:Main.java

@TargetApi(4)
public static String getCpuInfo() {
    StringBuffer sb = new StringBuffer();
    sb.append("abi: ").append(Build.CPU_ABI).append("\n");
    if (new File("/proc/cpuinfo").exists()) {
        try {//from www. j av  a2 s.  co  m
            BufferedReader br = new BufferedReader(new FileReader(new File("/proc/cpuinfo")));
            String aLine;
            while ((aLine = br.readLine()) != null) {
                sb.append(aLine + "\n");
            }
            if (br != null) {
                br.close();
            }
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    return sb.toString();
}

From source file:Main.java

/**
 * Reads content of file, and returns result as string
 *
 * @param filename path to file/*from ww w .jav  a  2s .  c  om*/
 * @return Contents of file
 * @throws IOException
 */
public static String fileToString(String filename) throws IOException {
    BufferedReader reader = new BufferedReader(new FileReader(filename));
    StringBuilder builder = new StringBuilder();
    String line;

    // For every line in the file, append it to the string builder
    while ((line = reader.readLine()) != null) {
        builder.append(line);
    }
    reader.close();

    return builder.toString();
}

From source file:Main.java

public static String readFile(final String path, final String fileName) {
    final File file = new File(path, fileName);
    final StringBuilder builder = new StringBuilder();
    BufferedReader br = null;// w ww  .ja  va  2s .  c  o m
    try {
        br = new BufferedReader(new FileReader(file));
        String line;
        while ((line = br.readLine()) != null) {
            builder.append(line);
            builder.append('\n');
        }
    } catch (final Exception ex) {
        ex.printStackTrace();
    } finally {
        if (br != null) {
            try {
                br.close();
            } catch (final IOException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
        }
    }

    return builder.toString();
}