【Java】short、int、float、boolean与byte之间的转换工具类

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import java.nio.ByteBuffer;/**  * 各基础类型与byte之间的转换  **/public class Utility {    /**      * 将boolean转成byte[]      * @param val      * @return byte[]     */      public static byte[] Boolean2ByteArray(boolean val) {        int tmp = (val == false) ? 0 : 1;        return ByteBuffer.allocate(4).putInt(tmp).array();    }    /**      * 将byte[]转成boolean     * @param data     * @return boolean     */     public static boolean ByteArray2Boolean(byte[] data) {        if (data == null || data.length < 4) {            return false;        }        int tmp = ByteBuffer.wrap(data, 0, 4).getInt();        return (tmp == 0) ? false : true;    }    /**      * 将int转成byte[]      * @param val      * @return byte[]     */      public static byte[] Int2ByteArray(int val) {        return ByteBuffer.allocate(4).putInt(val).array();    }    /**      * 将byte[]转成int     * @param data     * @return int     */     public static int ByteArray2Int(byte[] data) {        if (data == null || data.length < 4) {            return 0xDEADBEEF;        }        return ByteBuffer.wrap(data, 0, 4).getInt();    }    /**      * 将float转成byte[]      * @param val      * @return byte[]     */      public static byte[] Float2ByteArray(float val) {        return ByteBuffer.allocate(4).putFloat(val).array();    }    /**      * 将byte[]转成float     * @param data     * @return float     */     public static float ByteArray2Float(byte[] data) {        if (data == null || data.length < 4) {            return -1234.0f;        }        return ByteBuffer.wrap(data).getFloat();    }    /**      * 将byte[]数组转成short[]数组     * @param b     * @return short[]     */     public static short[] byteArray2ShortArray(byte[] b) {        int len = b.length / 2;        int index = 0;        short[] re = new short[len];        byte[] buf = new byte[2];        for (int i = 0; i < b.length;) {            buf[0] = b[i];            buf[1] = b[i + 1];            short st = byteToShort(buf);            re[index] = st;            index++;            i += 2;        }        return re;    }    /**     * 将一个short[]数组反转为byte[]字节数组     * @param b     */    public static byte[] shortArray2ByteArray(short[] b) {        byte[] rebt = new byte[b.length * 2];        int index = 0;        for (int i = 0; i < b.length; i++) {            short st = b[i];            byte[] bt = shortToByte(st);            rebt[index] = bt[0];            rebt[index + 1] = bt[1];            index += 2;        }        return rebt;    }    /**     * short转换为byte[]     * @param number     * @return byte[]     */    public static byte[] shortToByte(short number) {        int temp = number;        byte[] b = new byte[2]; // 将最低位保存在最低位        b[0] = (byte)(temp & 0xff);        temp = temp >> 8; // 向右移8位        b[1] = (byte)(temp & 0xff);        return b;    }    /**     * byte[]转换为short     * @param b     * @return short     */    public static short byteToShort(byte[] b) {        short s = 0;        short s0 = (short) (b[0] & 0xff);// 最低位        short s1 = (short) (b[1] & 0xff);        s1 <<= 8;        s = (short) (s0 | s1);        return s;    }}
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