Example usage for java.util Random nextInt

Introduction

In this page you can find the example usage for java.util Random nextInt.

Prototype

public int nextInt(int bound) 

Source Link

Document

Returns a pseudorandom, uniformly distributed int value between 0 (inclusive) and the specified value (exclusive), drawn from this random number generator's sequence.

Usage

From source file:com.aqnote.shared.cryptology.util.lang.CommonUtil.java

public static String genRandom(int length) {
    final int maxNum = ASCII_CHAR.length;
    int i;/*from   w ww . j  a  va2s.c om*/
    int count = 0;

    Random r = new Random();
    StringBuffer pwd = new StringBuffer("");
    while (count++ < length) {
        i = Math.abs(r.nextInt(maxNum));
        if (i >= 0 && i < ASCII_CHAR.length) {
            pwd.append(ASCII_CHAR[i]);
        }
    }
    return pwd.toString();
}

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From source file:Main.java

public static String randomString() {
    Random generator = new Random();
    StringBuilder randomStringBuilder = new StringBuilder();
    char tempChar;
    for (int i = 0; i < 32; i++) {
        tempChar = (char) (generator.nextInt(25) + 97);
        randomStringBuilder.append(tempChar);
    }/*  w  w  w.  jav  a  2 s.c  o  m*/
    return randomStringBuilder.toString();
}

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From source file:com.eugene.fithealthmaingit.FatSecretSearchAndGet.FatSecretGetMethod.java

private static String nonce() {
    Random r = new Random();
    StringBuilder n = new StringBuilder();
    for (int i = 0; i < r.nextInt(8) + 2; i++)
        n.append(r.nextInt(26) + 'a');
    return n.toString();
}

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From source file:fr.esecure.banking.metier.utils.PasswordGenerator.java

public static String genererDefaultPassword() {
    int n;/*from  w w  w  .  j a v a 2s  .c om*/
    String password = "";
    Random r = new Random();
    for (int i = 0; i < NChar; i++) {
        n = r.nextInt(4); // gnere un nombre alatoire entre 0 et 3
        if (n == 0)
            password += maj[r.nextInt(maj.length)];
        else if (n == 1)
            password += min[r.nextInt(min.length)];
        else if (n == 2)
            password += chiffre[r.nextInt(chiffre.length)];
        else
            password += charSpecial[r.nextInt(charSpecial.length)];
    }
    return password;
}

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From source file:fr.esecure.banking.metier.utils.PasswordGenerator.java

public static String genererDefaultPasswordAndCrypt() {
    int n;/*w w  w .j a v  a 2  s.  c  o  m*/
    String password = "";
    Random r = new Random();
    for (int i = 0; i < NChar; i++) {
        n = r.nextInt(4); // gnere un nombre alatoire entre 0 et 3
        if (n == 0)
            password += maj[r.nextInt(maj.length)];
        else if (n == 1)
            password += min[r.nextInt(min.length)];
        else if (n == 2)
            password += chiffre[r.nextInt(chiffre.length)];
        else
            password += charSpecial[r.nextInt(charSpecial.length)];
    }
    return crypter(password);
}

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From source file:gr.demokritos.iit.cru.creativity.reasoning.semantic.ThinkingSeedGenerator.java

public static String ThinkingSeedGenerator(String seed, int difficulty, String language)
        throws ClassNotFoundException, SQLException, IOException, InstantiationException,
        IllegalAccessException {//from w  ww.  j  a va 2  s  .c  om

    ArrayList<String> mined = new ArrayList<String>();
    Connect c = new Connect(language);
    RandomWordGenerator r = new RandomWordGenerator(c);
    String randomPhrase = r.selectRandomWord(seed, difficulty);

    int size = randomPhrase.split(",").length;

    Random rand = new Random();
    if (language.equalsIgnoreCase("en")) {
        while (mined.size() < size) {
            int Point = rand.nextInt(1172);//number of words in english thesaurus
            String word = FileUtils.readLines(new File(c.getEnglish_thes())).get(Point).trim();
            if (mined.contains(word)) {//|| inf.getStop().contains(word)) {
                continue;
            }
            mined.add(word);
        }
    } else if (language.equalsIgnoreCase("de")) {
        while (mined.size() < size) {
            int Point = rand.nextInt(1704);//number of words in german thesaurus
            String word = FileUtils.readLines(new File(c.getGerman_thes())).get(Point).trim();
            if (mined.contains(word)) {
                continue;
            }
            mined.add(word);
        }
    } else {
        while (mined.size() < size) {
            int Point = rand.nextInt(933);//number of words in greek thesaurus
            String word = FileUtils.readLines(new File(c.getGreek_thes())).get(Point).trim();
            if (mined.contains(word)) {
                continue;
            }
            mined.add(word);
        }
    }
    c.CloseConnection();

    return StringUtils.join(mined, ",");
}

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From source file:dtu.ds.warnme.utils.RandomUtils.java

public static String randomString(int minChars, int maxChars) {
    char[] chars = "abcdefghijklmnopqrstuvwxyz0123456789!@#$%^&*(),./;'[]\\<>?:\"{}|-=_+".toCharArray();
    StringBuilder sb = new StringBuilder();
    Random random = new Random();
    for (int i = 0; i < randomInt(minChars, maxChars); i++) {
        char c = chars[random.nextInt(chars.length)];
        sb.append(c);//from   w  w w.j a v a  2s .c  om
    }
    String output = sb.toString();
    return output;
}

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From source file:Main.java

public static String getRandom(int i) {
    Random jjj = new Random();
    // int suiJiShu = jjj.nextInt(9);
    if (i == 0)//  w  w w  .  j a va2s.  co  m
        return "";
    String jj = "";
    for (int k = 0; k < i; k++) {
        jj = jj + jjj.nextInt(9);
    }
    return jj;
}

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From source file:com.skilrock.lms.common.utility.AutoGenerate.java

public static String autoPassword() {
    Random r = new Random();

    StringBuffer newString = new StringBuffer();
    // No of Big letters in password
    int a1 = r.nextInt(6) + 1;
    // No of small letters in password
    int a2 = r.nextInt(7 - a1) + 1;
    // no on numbers
    int a3 = 8 - a1 - a2;

    for (int j = 0; j < a1; j++) {
        char c1 = (char) (r.nextInt(26) + 65);
        // AL.add(new Character(c1));
        newString.append(new Character(c1));
    }/*  w  w w .  ja v a 2s  .c om*/
    for (int j = 0; j < a2; j++) {
        char c1 = (char) (r.nextInt(26) + 97);
        // AL.add(new Character(c1));
        newString.append(new Character(c1));
    }
    for (int j = 0; j < a3; j++) {
        char c1 = (char) (r.nextInt(9) + 48);
        // AL.add(new Character(c1));
        newString.append(new Character(c1));
    }
    //logger.debug("pwd = " + newString.toString());
    return newString.toString();
}

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From source file:at.alladin.rmbt.qos.testscript.SystemApi.java

public static String getRandomUrl(String prefix, String suffix, int length) {
    char[] digits = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f' };

    StringBuilder randomUrl = new StringBuilder();
    randomUrl.append(prefix);/*from ww w . j av a 2s.  c  om*/
    Random rnd = new Random();

    for (int i = 0; i < length; i++) {
        randomUrl.append(digits[rnd.nextInt(16)]);
    }

    randomUrl.append(suffix);
    return randomUrl.toString();
}

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