Java Integer Create toInt(byte[] bytes)

Description

Creates an integer of the given byte array.

License

Apache License

Parameter

Parameter	Description
bytes	the bytes to convert to an integer

Return

the integer created from the bytes

Declaration

public static int toInt(byte[] bytes) 

Method Source Code

//package com.java2s;
/*//from w w  w.  j a v  a2 s.  c  o m
 * Copyright 2013 Robert von Burg <eitch@eitchnet.ch>
 * 
 * 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.
 */

public class Main {
    /**
     * Creates an integer of the given byte array. They byte array must be 4 bytes long. The byte at index 0 is the
     * highest byte
     * 
     * @param bytes
     *            the bytes to convert to an integer
     * 
     * @return the integer created from the bytes
     */
    public static int toInt(byte[] bytes) {

        if (bytes.length != 4)
            throw new IllegalArgumentException("The input byte array for a long must have 4 values"); //$NON-NLS-1$

        return ((bytes[0] & 0xff) << 24) //
                | ((bytes[1] & 0xff) << 16) //
                | ((bytes[2] & 0xff) << 8) //
                | ((bytes[3] & 0xff));
    }
}

Related

1. toInt(byte[] bytes)
2. toInt(byte[] bytes)
3. toInt(byte[] bytes)
4. toInt(byte[] bytes)
5. toInt(byte[] bytes)
6. toInt(byte[] bytes)
7. toInt(byte[] bytes, boolean isBigEndian)
8. toInt(byte[] bytes, int index)
9. toInt(byte[] bytes, int offset)