public static byte[] int2Byte(int temp){
byte b[] = new byte[4];
for (int i = b.length-1; i >= 0; i--) {
b[i] = new Integer(temp & 0xff).byteValue();
temp = temp >> 8;
}
return b;
}
public static int byte2Int(byte[] b){
int temp=0;
for(int i=0;i<3;i++){
if(b[i]<0){
temp+=(b[i]+256);
}else{
temp+=b[i];
}
temp*=256;
}
temp+=b[3];
if(b[3]<0){
temp+=256;
}
return temp;
}