Java獲取時間打印到控制臺代碼實例

更新時間：2020年02月04日 11:27:35 作者：塵世間迷茫的小書童

這篇文章主要介紹了Java獲取時間打印到控制臺代碼實例,文中通過示例代碼介紹的非常詳細，對大家的學習或者工作具有一定的參考學習價值,需要的朋友可以參考下

面試時有一道面試題：要求獲取當時時間，并像電子手表那樣打印到控制臺。

import java.text.SimpleDateFormat;
import java.time.LocalTime;
import java.util.Date;

/**
 * 打印時間到控制臺
 *
 */
public class ConsoleTime {

  public static void main(String[] args) {

//    LocalTime now = LocalTime.now();
//    System.out.println(now);
//    System.out.println(now.getHour() + " " + now.getMinute() + " " + now.getSecond());

    Date date = new Date();
    //yyyy-MM-dd
    SimpleDateFormat format = new SimpleDateFormat("HH:mm:ss");//設置日期格式
    String str = format.format(date);
    System.out.println("現(xiàn)在時間：" + str);

    String[] time = getTime(str.split(":"));
    for (int i=0; i<time.length; i++) {
      System.out.println(time[i]);
    }
  }

  static String[] getTime(String[] array) {
    String[] strArrays = new String[5];
    String str1 = "";
    String str2 = "";
    String str3 = "";
    String str4 = "";
    String str5 = "";

    for (int i=0; i<array.length; i++) {
      char[] chars = array[i].toCharArray();
      for (int a=0; a<chars.length; a++) {
        switch (chars[a]) {
          case '0':
            str1 += "  --  ";
            str2 += " |  | ";
            str3 += " |  | ";
            str4 += " |  | ";
            str5 += "  --  ";
            break;
          case '1':
            str1 += "  |  ";
            str2 += "  |  ";
            str3 += "  |  ";
            str4 += "  |  ";
            str5 += "  |  ";
            break;
          case '2':
            str1 += " ---- ";
            str2 += "   | ";
            str3 += " ---- ";
            str4 += " |   ";
            str5 += " ---- ";
            break;
          case '3':
            str1 += " ---- ";
            str2 += "   | ";
            str3 += " ---- ";
            str4 += "   | ";
            str5 += " ---- ";
            break;
          case '4':
            str1 += " |  | ";
            str2 += " |  | ";
            str3 += " ---- ";
            str4 += "   | ";
            str5 += "   | ";
            break;
          case '5':
            str1 += " ---- ";
            str2 += " |   ";
            str3 += " ---- ";
            str4 += "   | ";
            str5 += " ---- ";
            break;
          case '6':
            str1 += " ---- ";
            str2 += " |   ";
            str3 += " ---- ";
            str4 += " |  | ";
            str5 += " ---- ";
            break;
          case '7':
            str1 += " ----  ";
            str2 += "    | ";
            str3 += "    | ";
            str4 += "    | ";
            str5 += "    | ";
            break;
          case '8':
            str1 += " ---- ";
            str2 += " |  | ";
            str3 += " ---- ";
            str4 += " |  | ";
            str5 += " ---- ";
            break;
          case '9':
            str1 += " ---- ";
            str2 += " |  | ";
            str3 += " ---- ";
            str4 += "   | ";
            str5 += " ---- ";
            break;
        }
      }
      if(i < (array.length-1)) {
        str1 += "  ";
        str2 += " . ";
        str3 += "  ";
        str4 += " . ";
        str5 += "  ";
      }
    }
    strArrays[0] = str1;
    strArrays[1] = str2;
    strArrays[2] = str3;
    strArrays[3] = str4;
    strArrays[4] = str5;
    return strArrays;
  }

}

打印出來的樣式：