get Random Word - Java 2D Graphics

Java examples for 2D Graphics:Image Captcha

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Description

get Random Word

Demo Code

/*//from  w  w w . j  av  a  2s .co m
 * Copyright (c) 2015, TypeZero Engine (game.developpers.com)
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
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 * Redistributions of source code must retain the above copyright notice, this
 * list of conditions and the following disclaimer.
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 * Redistributions in binary form must reproduce the above copyright notice,
 * this list of conditions and the following disclaimer in the documentation
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 * this software without specific prior written permission.
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 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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 */
//package com.java2s;

public class Main {
    public static void main(String[] argv) throws Exception {
        System.out.println(getRandomWord());
    }

    private final static int DEFAULT_WORD_LENGTH = 6;
    private final static String WORD = "ABCDEFGHIJKLMNOPQRSTUVWXYZ123456789";

    /**
     * @return String random word
     */
    public static String getRandomWord() {
        return randomWord(DEFAULT_WORD_LENGTH);
    }

    /**
     * @return CAPTCHA word
     */
    private static String randomWord(int wordLength) {
        StringBuffer word = new StringBuffer();

        for (int i = 0; i < wordLength; i++) {
            int index = Math.abs((int) (Math.random() * WORD.length()));
            char ch = WORD.charAt(index);
            word.append(ch);
        }

        return word.toString();
    }
}

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