Java InputStream Read Long readLong(InputStream stream)

Description

read Long

License

Open Source License

Declaration

public static long readLong(InputStream stream) throws IOException 

Method Source Code

//package com.java2s;
//License from project: Open Source License 

import java.io.IOException;
import java.io.InputStream;

public class Main {
    private final static int BITS_IN_BYTE = 8;
    private final static int BITS_IN_LONG = 64;

    public static long readLong(InputStream stream) throws IOException {
        long result = 0;
        for (int i = 0; i < BITS_IN_LONG; i += BITS_IN_BYTE)
            result |= ((long) readByte(stream)) << i;
        return result;
    }/*from  www. j a va 2 s  .com*/

    private static int readByte(InputStream stream) throws IOException {
        int result = stream.read();
        if (result == -1)
            throw new IOException("Try to read from empty stream!");
        return result;
    }
}

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