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:Main.java

public static String generateBoundary() {
    StringBuilder buffer = new StringBuilder();
    Random rand = new Random();
    int count = rand.nextInt(11) + 30; // a random size from 30 to 40
    for (int i = 0; i < count; i++) {
        buffer.append(MULTIPART_CHARS[rand.nextInt(MULTIPART_CHARS.length)]);
    }/* w ww.j a  v a2s .c  om*/
    return buffer.toString();
}

From source file:Main.java

public static int getRandom(int min, int max) {
    Random random = new Random();
    int s = random.nextInt(max) % (max - min + 1) + min;
    return s;//  ww  w .  j  a  v  a2  s .c o m
}

From source file:Main.java

public static int randomColor() {
    Random random = new Random();
    int r = random.nextInt(256);
    int g = random.nextInt(256);
    int b = random.nextInt(256);
    double color_perception = 1 - (0.299 * r + 0.587 * g + 0.114 * b) / 255;
    if (color_perception > 0.4) {
        return Color.argb(255, r, g, b);
    } else {//from  w  w w  .j  a  v a 2 s .c  o  m
        return randomColor();
    }
}

From source file:Main.java

public static int generateRandomColor() {
    Random rnd = new Random();
    int r = rnd.nextInt(256);
    int g = rnd.nextInt(256);
    int b = rnd.nextInt(256);

    if ((r == 0 && g == 0 && b == 0) || (r == 255 && g == 255 && b == 255)) {
        return generateRandomColor();
    }/*  w  w w  .  java  2 s .  co  m*/

    int color = Color.argb(30, r, g, b);

    return color;
}

From source file:Main.java

public static int randomColor() {
    Random rnd = new Random();
    int color = Color.argb(255, rnd.nextInt(256), rnd.nextInt(256), rnd.nextInt(256));
    return color;
}

From source file:Main.java

public static int generateColor() {
    Random random = new Random();

    final float hue = random.nextInt(360);
    final float saturation = (random.nextInt(7000) + 2000) / 10000f;
    final float luminance = 0.3f;
    float[] hsv = { hue, saturation, luminance };
    return Color.HSVToColor(hsv);
}

From source file:Main.java

public static <T> T getRandomFrom(Set<T> set, Random random) {
    int randomIndex = random.nextInt(set.size());
    Iterator<T> iterator = set.iterator();
    for (int i = 0; i < randomIndex; i++) {
        if (!iterator.hasNext())
            break;
        iterator.next();/*from   ww w. jav a 2s. c o  m*/
    }
    return iterator.next();
}

From source file:Main.java

public static int GetRandomColor() {
    Random random = new Random();
    int p = random.nextInt(Colors.length);
    while (Colors[p].equals(lastColor0) || Colors[p].equals(lastColor1) || Colors[p].equals(lastColor2)) {
        p = random.nextInt(Colors.length);
    }/*from   ww  w . j  a  va2  s. c  o m*/
    lastColor0 = lastColor1;
    lastColor1 = lastColor2;
    lastColor2 = Colors[p];
    return Color.parseColor(Colors[p]);
}

From source file:Main.java

static void shuffleArray(int[] ar) {
    Random rnd = new Random();
    for (int i = ar.length - 1; i > 0; i--) {
        int index = rnd.nextInt(i + 1);
        // Simple swap
        int a = ar[index];
        ar[index] = ar[i];/*  w  ww. jav  a  2s .  c  o  m*/
        ar[i] = a;
    }
}

From source file:Main.java

public static int getRandomColor() {
    Random rndcolor = new Random();
    int color = Color.argb(255, rndcolor.nextInt(256), rndcolor.nextInt(256), rndcolor.nextInt(256));
    return color;
}