编程实现用户名和密码自动生成【可以自己指定长度】

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也不是不可以，你用个随机数random类生成string随机数，用两个string包装类去赋值，不就可以了

Java code

/**   * 产生随机字符串   * */private static Random randGen = null;private static char[] numbersAndLetters = null;private static Object initLock = new Object(); public static final String randomString(int length) {         if (length < 1) {             return null;         }         if (randGen == null) {             synchronized (initLock) {                 if (randGen == null) {                     randGen = new Random();                     numbersAndLetters = ("0123456789abcdefghijklmnopqrstuvwxyz" +                     "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ").toCharArray();                     //numbersAndLetters = ("0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ").toCharArray();                 }             }         }         char [] randBuffer = new char[length];         for (int i=0; i<randBuffer.length; i++) {             randBuffer[i] = numbersAndLetters[randGen.nextInt(71)];          //randBuffer[i] = numbersAndLetters[randGen.nextInt(35)];         }         return new String(randBuffer);}

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也不是不可以，你用个随机数random类生成string随机数，用两个string包装类去赋值，不就可以了

Java code

/**   * 产生随机字符串   * */private static Random randGen = null;private static char[] numbersAndLetters = null;private static Object initLock = new Object(); public static final String randomString(int length) {         if (length < 1) {             return null;         }         if (randGen == null) {             synchronized (initLock) {                 if (randGen == null) {                     randGen = new Random();                     numbersAndLetters = ("0123456789abcdefghijklmnopqrstuvwxyz" +                     "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ").toCharArray();                     //numbersAndLetters = ("0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ").toCharArray();                 }             }         }         char [] randBuffer = new char[length];         for (int i=0; i<randBuffer.length; i++) {             randBuffer[i] = numbersAndLetters[randGen.nextInt(71)];          //randBuffer[i] = numbersAndLetters[randGen.nextInt(35)];         }         return new String(randBuffer);}

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