Java ByteBuffer to Int getUnsignedInt(ByteBuffer bb)

Description

Get a unsigned int from byte buffer an put the value in a long

License

Apache License

Parameter

Parameter	Description
bb	a parameter

Declaration

public static final long getUnsignedInt(ByteBuffer bb) 

Method Source Code

//package com.java2s;
/*//from  w  ww. j  a v  a  2s .c  o m
 * Copyright 2015 bladesilent@gmail.com
 *
 * 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.
 *
 */

import java.nio.ByteBuffer;

public class Main {
    /**
     * Get a unsigned int from byte buffer an put the value in a long
     * 
     * @param bb
     * @return
     */

    public static final long getUnsignedInt(ByteBuffer bb) {
        if (bb.remaining() >= 4) {
            return ((0x0FF & bb.get()) << 24) + ((0x0FF & bb.get()) << 16) + ((0x0FF & bb.get()) << 8)
                    + (0x0FF & bb.get());
        } else {
            throw new IndexOutOfBoundsException();
        }
    }

    public static final long getUnsignedInt(byte[] buf, int off) {
        if (buf.length - off >= 4) {
            return ((0x0FF & buf[off]) << 24) + ((0x0FF & buf[off + 1]) << 16) + ((0x0FF & buf[off + 2]) << 8)
                    + (0x0FF & buf[off + 3]);
        } else {
            throw new IndexOutOfBoundsException();
        }
    }
}

Related

1. getUnsignedByte(ByteBuffer bb)
2. getUnsignedByte(ByteBuffer buffer)
3. getUnsignedInt(ByteBuffer buffer)
4. getUnsignedInt(ByteBuffer buffer)
5. getUnsignedInt(ByteBuffer buffer)
6. getUnsignedInt16LSBMSB(ByteBuffer byteBuffer)