read Fully to byte array from InputStream - Java java.io

Java examples for java.io:InputStream Read

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Description

read Fully to byte array from InputStream

Demo Code

/*******************************************************************************
 * Copyright 2013 EMBL-EBI/*w w w.j av  a2s. c  o  m*/
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *   http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 ******************************************************************************/
//package com.java2s;
import java.io.EOFException;
import java.io.IOException;
import java.io.InputStream;

public class Main {
    public final static byte[] readFully(InputStream is, int len)
            throws IOException {
        byte[] b = new byte[len];
        int off = 0;
        if (len < 0)
            throw new IndexOutOfBoundsException();
        int n = 0;
        while (n < len) {
            int count = is.read(b, off + n, len - n);
            if (count < 0)
                throw new EOFException();
            n += count;
        }

        return b;
    }

    public final static void readFully(InputStream is, byte b[], int off,
            int len) throws IOException {
        if (len < 0)
            throw new IndexOutOfBoundsException();
        int n = 0;
        while (n < len) {
            int count = is.read(b, off + n, len - n);
            if (count < 0)
                throw new EOFException();
            n += count;
        }
    }
}

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