Java ThreadLocalRandom generateDescription()

Description

Generates a description for a random part using the arrays of constants #SIZE , #COLOUR , #SHAPE , #MATERIAL , and #NOUN .

License

Open Source License

Return

a human-readable description of an object

Declaration

private static String generateDescription() 

Method Source Code

//package com.java2s;
/* Licensed Materials - Property of IBM                                   */

import java.util.concurrent.ThreadLocalRandom;

public class Main {
    /**/*from   www.java2s . co  m*/
     * A selection of possible sizes for the description. Maximum length should be 11 characters.
     */
    private static final String[] SIZE = { "Tiny", "Small", "Medium", "Large", "Extra large", "Huge" };
    /**
     * A selection of possible colours for the description. Maximum length should be 6 characters.
     */
    private static final String[] COLOUR = { "blue", "red", "orange", "green", "yellow", "white", "black",
            "purple" };
    /**
     * A selection of possible shapes for the description. Maximum length should be 6 characters.
     */
    private static final String[] SHAPE = { "round", "square", "oval", "flat" };
    /**
     * A selection of possible materials for the description. Maximum length should be 7 characters.
     */
    private static final String[] MATERIAL = { "plastic", "metal", "card" };
    /**
     * A selection of possible object types for the description. Maximum length should be 6 characters.
     */
    private static final String[] NOUN = { "widget", "thing", "plug", "nut", "bit", "part", "panel" };

    /**
     * Generates a description for a random part using the arrays of constants
     * {@link #SIZE}, {@link #COLOUR}, {@link #SHAPE}, {@link #MATERIAL}, and
     * {@link #NOUN}. The description will be a string of maximum length 40 characters.
     * 
     * @return a human-readable description of an object
     */
    private static String generateDescription() {

        // Source of random numbers
        ThreadLocalRandom r = ThreadLocalRandom.current();

        // Buffer to hold the generated description - max possible length of 40 characters
        StringBuilder sb = new StringBuilder(40);

        // Generate a random sequence of adjectives and finish with a noun
        sb.append(SIZE[r.nextInt(SIZE.length)]);
        sb.append(' ');
        sb.append(COLOUR[r.nextInt(COLOUR.length)]);
        sb.append(' ');
        sb.append(SHAPE[r.nextInt(SHAPE.length)]);
        sb.append(' ');
        sb.append(MATERIAL[r.nextInt(MATERIAL.length)]);
        sb.append(' ');
        sb.append(NOUN[r.nextInt(NOUN.length)]);

        // Return the created description
        return sb.toString();
    }
}

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