拼接合并两个byte数组

public static byte[] addBytes(byte[] data1, byte[] data2) {  
    byte[] data3 = new byte[data1.length + data2.length];  
    System.arraycopy(data1, 0, data3, 0, data1.length);  
    System.arraycopy(data2, 0, data3, data1.length, data2.length);  
    return data3;  
  
} 

合并数组

Arrays.copyOfRange(sleepdata,0,sleepdata.length);