package com.phyl.password; import java.util.ArrayList; import java.util.Arrays; import java.util.Random; /**  * 字符随机生成类  * @author ASUS  *  */ public class PassWord {  /**   * 密码类型枚举   * @author ASUS   */  public static enum TYPE {   /**    * 字符型    */   LETTER,   /**    * 大写字符型    */   CAPITAL,   /**    * 数字型    */   NUMBER,   /**    * 符号型    */   SIGN,   /**    * 大+小字符 型    */   LETTER_CAPITAL,   /**    * 小字符+数字 型    */   LETTER_NUMBER,   /**    * 大+小字符+数字 型    */   LETTER_CAPITAL_NUMBER,   /**    * 大+小字符+数字+符号 型    */   LETTER_CAPITAL_NUMBER_SIGN  }  private static String[] lowercase = {    "a","b","c","d","e","f","g","h","i","j","k",    "l","m","n","o","p","q","r","s","t","u","v","w","x","y","z"};  private static String[] capital = {    "A","B","C","D","E","F","G","H","I","J","K",    "L","M","N","O","P","Q","R","S","T","U","V","W","X","Y","Z"};   private static String[] number = {    "1","2","3","4","5","6","7","8","9","0"};  private static String[] sign = {    "~","!","@","#","$","%","^","&","*","(",")","_","+","`","-","=",    "{","}","|",":","\"","<",">","?",    "[","]","\\",";","'",",",".","/"};  /**   * 静态随机数   */  private static Random random = new Random();  public static void main(String[] args) {   System.out.println(PassWord.getRandom(24, PassWord.TYPE.CAPITAL));  }  /**   * 获取随机组合码   * @param num 位数   * @param type 类型   * @type   * <br>字符型 LETTER,   * <br>大写字符型 CAPITAL,   * <br>数字型 NUMBER,   * <br>符号型 SIGN,   * <br>大+小字符型 LETTER_CAPITAL,   * <br>小字符+数字 型 LETTER_NUMBER,   * <br>大+小字符+数字 型 LETTER_CAPITAL_NUMBER,   * <br>大+小字符+数字+符号 型 LETTER_CAPITAL_NUMBER_SIGN   */  public static String getRandom(int num,TYPE type){   ArrayList<String> temp = new ArrayList<String>();   StringBuffer code = new StringBuffer();   if(type == TYPE.LETTER){    temp.addAll(Arrays.asList(lowercase));   }else if(type == TYPE.CAPITAL){    temp.addAll(Arrays.asList(capital));   }else if(type == TYPE.NUMBER){    temp.addAll(Arrays.asList(number));   }else if(type == TYPE.SIGN){    temp.addAll(Arrays.asList(sign));   }else if(type == TYPE.LETTER_CAPITAL){    temp.addAll(Arrays.asList(lowercase));    temp.addAll(Arrays.asList(capital));   }else if(type == TYPE.LETTER_NUMBER){    temp.addAll(Arrays.asList(lowercase));    temp.addAll(Arrays.asList(number));   }else if(type == TYPE.LETTER_CAPITAL_NUMBER){    temp.addAll(Arrays.asList(lowercase));    temp.addAll(Arrays.asList(capital));    temp.addAll(Arrays.asList(number));   }else if(type == TYPE.LETTER_CAPITAL_NUMBER_SIGN){    temp.addAll(Arrays.asList(lowercase));    temp.addAll(Arrays.asList(capital));    temp.addAll(Arrays.asList(number));    temp.addAll(Arrays.asList(sign));   }   for (int i = 0; i < num; i++) {    code.append(temp.get(random.nextInt(temp.size())));   }   return code.toString();  } }