cansend.java

用java写编写的一个GPS源代码请大家多多指教

package com.gps.center.parsedata;

import java.util.Date;
import java.text.SimpleDateFormat;
//实现数组和十六进制的转化
public class CanSend {
//  public CanSend() {
//  }
  public static boolean CanSendMsg(Date DeviceDate) {
    /*
         String date = "2005-05-06 13:12:05";
         SimpleDateFormat sf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
         java.util.Date b = sf.parse(date);
     */
    boolean cansend = false;
    Date currentDate = new Date();
    long c = (currentDate.getTime() - DeviceDate.getTime()) / (1000 * 60);
    if (c < 8) {
      cansend = true;
    }
    return cansend;
  }

  public static String getDateTime() {
    /*
         String date = "2005-05-06 13:12:05";
         SimpleDateFormat sf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
         java.util.Date b = sf.parse(date);
     */
    String currentDateTime = null;
    Date currentDate = new Date();
    SimpleDateFormat sf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
    currentDateTime = sf.format(currentDate);
    return currentDateTime;
  }

  public static String getTime() {
    /*
         String date = "2005-05-06 13:12:05";
         SimpleDateFormat sf = new SimpleDateFormat("HHmmss");
         java.util.Date b = sf.parse(date);
     */
    String currentTime = null;
    Date currentDate = new Date();
    SimpleDateFormat sf = new SimpleDateFormat("HHmmss");
    currentTime = sf.format(currentDate);
    return currentTime;
  }

  /**
   * 将字节码数组转换为16进制字符串
   * @param b 输入的字节码数组
   * @return 输出的16进制字符串
   */
  public static String byte2hex(byte[] b) {
    StringBuffer sb = new StringBuffer();
    for (int n = 0; n < b.length; n++) {
      if ( ( (int) b[n] & 0xff) < 0x10) {
        sb.append("0");
      }
      sb.append(Integer.toHexString(b[n] & 0xFF));
    }
    return String.valueOf(sb);
  }

  /**
   * 将16进制字符串转换为字节码数组
   * @param  b 输出的字节码数组
   * @return 输入的16进制字符串
   */
  public static byte[] strToHex(String st) {
    byte[] bt = new byte[1];
    bt = st.getBytes();
    return bt;
  }
}