Java realizes mutual conversion between various bases

1. Decimal (signed) to hexadecimal

Integer.toHexString(10进制数 & 0xffff)  这个方式转出来的16进制为      例:FD01
Integer.toHexString(10进制数)  这个方式转出来的16进制为               例:FFFFFD01

2. Hexadecimal to decimal (signed)

short val = (short)((Integer.parseInt("16进制字符串", 16)) & 0xffff);