Java Byte Array Create toByteArray(Object obj)

Description

to Byte Array

License

Apache License

Declaration

public static byte[] toByteArray(Object obj) 

Method Source Code

//package com.java2s;
/*//from  w w w. j  av  a 2 s .c o  m
 * Copyright 2015 IBM Corp.
 *
 * 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 {
    public static byte[] toByteArray(Object obj) {
        if (obj instanceof Object[]) {

            Object[] arr = (Object[]) obj;
            byte[] byteArr = new byte[arr.length];
            for (int i = 0; i < arr.length; i++) {
                if (arr[i] instanceof Integer) {
                    byteArr[i] = ((Integer) arr[i]).byteValue();
                } else if (arr[i] instanceof Double) {
                    byteArr[i] = ((Double) arr[i]).byteValue();

                } else
                    throw new RuntimeException("cant convert to byte - "
                            + arr[i]);
            }
            return byteArr;
        } else
            throw new RuntimeException("not an array" + obj);

    }
}

Related

1. toByteArray(long hi, long lo)
2. toByteArray(Long mac)
3. toByteArray(long value)
4. toByteArray(long value)
5. toByteArray(Number[] array)
6. toByteArray(Object value)
7. toByteArray(short foo)
8. toByteArray(String address)
9. toByteArray(String binString)