Example usage for java.io ObjectInputStream read

Introduction

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

Prototype

public int read(byte[] buf, int off, int len) throws IOException 

Source Link

Document

Reads into an array of bytes.

Usage

From source file:Main.java

public static void main(String[] args) throws Exception {

    byte[] cbuf = new byte[10];

    FileOutputStream out = new FileOutputStream("test.txt");
    ObjectOutputStream oout = new ObjectOutputStream(out);

    oout.writeUTF("Hello World from java2s.com");
    oout.flush();/* w  w w. j a va 2 s. c  o  m*/
    oout.close();
    ObjectInputStream ois = new ObjectInputStream(new FileInputStream("test.txt"));

    ois.read(cbuf, 0, 7);

    for (int i = 0; i < 7; i++) {
        System.out.print((char) cbuf[i]);
    }
    ois.close();
}

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From source file:org.jactr.tools.async.message.ast.BaseASTMessage.java

private void readObject(java.io.ObjectInputStream in) throws IOException, ClassNotFoundException {
    in.defaultReadObject();//from   w w  w.j  av a2  s .  c om
    boolean astIsNotNull = in.readBoolean();
    if (astIsNotNull) {
        boolean wasCompressed = in.readBoolean();

        if (wasCompressed) {
            /*
             * pull through GZIPInputStream. this can be done more effeciently..
             */
            int len = in.readInt();

            byte[] bytes = _localInput.get();
            if (bytes == null || bytes.length < len) {
                bytes = new byte[len];
                _localInput.set(bytes);
            }

            if (LOGGER.isDebugEnabled())
                LOGGER.debug("Reading " + len + " bytes to decompress");

            in.read(bytes, 0, len);

            // in.readFully(bytes);

            ByteArrayInputStream bais = new ByteArrayInputStream(bytes, 0, len);
            DataInputStream zip = new DataInputStream(new GZIPInputStream(bais));
            _ast = Serializer.read(zip);
        } else
            _ast = Serializer.read(in);
    }
}

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From source file:org.nuxeo.ecm.core.api.SerializableInputStream.java

private void readObject(ObjectInputStream in) throws ClassNotFoundException, IOException {
    // always perform the default de-serialization first
    in.defaultReadObject();//w ww.jav a 2s .c  o m
    // create a temp file where we will put the blob content
    file = Framework.createTempFile("SerializableIS-", ".tmp");
    Framework.trackFile(file, file);
    OutputStream out = null;
    try {
        out = new FileOutputStream(file);
        byte[] buffer = new byte[IN_MEM_LIMIT];
        int read;
        int bytes = in.readInt();
        while (bytes > -1 && (read = in.read(buffer, 0, bytes)) != -1) {
            out.write(buffer, 0, read);
            bytes -= read;
            if (bytes == 0) {
                bytes = in.readInt();
            }
        }
    } finally {
        if (out != null) {
            out.close();
        }
        if (file.isFile()) {
            this.in = new BufferedInputStream(new FileInputStream(file));
        }
    }
}

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