Example usage for java.util Random Random

Introduction

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

Prototype

public Random()

Source Link

Document

Creates a new random number generator.

Usage

From source file:MainClass.java

public static void main(String[] args) {
    Random generator = new Random();

    for (int i = 0; i < 10; i++)
        data[i] = 10 + generator.nextInt(90);

    Arrays.sort(data);/*from   w w w .j  a  va  2 s  .  c o m*/

    System.out.println(binarySearch(3));
}

From source file:MainClass.java

public static void main(String args[]) {

    Random generator = new Random();

    for (int i = 0; i < 10; i++)
        System.out.println(generator.nextInt());
}

From source file:Main.java

public static void main(String[] args) {
    int[] a = new int[10];

    int min = Integer.MAX_VALUE;
    int max = Integer.MIN_VALUE;

    for (int b = 0; b < a.length; b++) {
        a[b] = new Random().nextInt(100);
    }//from ww w .j a  v  a 2s . c  o  m

    for (int b = 0; b < a.length; b++) {
        if (a[b] < min)
            min = a[b];
        if (a[b] > max)
            max = a[b];
    }
    System.out.println("Min is: " + min + " " + "Max is: " + max);
}

From source file:Main.java

public static void main(String[] args) {
    int[] nums = new int[100];

    for (int i = 0; i < nums.length; ++i) {
        nums[i] = i + 1;/*w w w .j  av a2s . c o  m*/
    }

    Random generator = new Random();
    for (int i = 0; i < nums.length; ++i) {
        int arrayIndex = generator.nextInt(nums.length - i);
        int tmp = nums[nums.length - 1 - i];
        nums[nums.length - 1 - i] = nums[arrayIndex];
        nums[arrayIndex] = tmp;
    }
    System.out.println(Arrays.toString(nums));
}

From source file:Random2.java

public static void main(String[] argv) {
    //+/*from ww w . j a v a  2  s  .c  o  m*/
    // java.util.Random methods are non-static, so need to construct
    Random r = new Random();
    for (int i = 0; i < 10; i++)
        System.out.println("A double from java.util.Random is " + r.nextDouble());
    for (int i = 0; i < 10; i++)
        System.out.println("An integer from java.util.Random is " + r.nextInt());
    //-
}

From source file:Random3.java

public static void main(String[] argv) {
    // java.util.Random methods are non-static, do need to construct Math
    //+// www  . j  ava  2 s. co  m
    Random r = new Random();
    for (int i = 0; i < 10; i++)
        System.out.println("A gaussian random double is " + r.nextGaussian());
    //-
}

From source file:Test.java

public static void main(String[] args) throws Exception {
    Lock myLock = new ReentrantLock();
    Random random = new Random();

    myLock.lock();/*  w w  w. j av  a2 s  . com*/
    int number = random.nextInt(5);
    int result = 100 / number;
    System.out.println("A result is " + result);
    FileOutputStream file = new FileOutputStream("file.out");
    file.write(result);
    file.close();
}

From source file:Main.java

public static void main(String[] args) {
    String[] peoples = { "A", "B", "C", "D", "E", "F" };
    List<String> names = Arrays.asList(peoples);

    for (int i = 0; i < peoples.length; i++) {
        int index = new Random().nextInt(names.size());
        String anynames = names.get(index);
        System.out.println(anynames);

    }//from ww  w. j a  va  2s .  co m

}

From source file:MainClass.java

public static void main(String args[]) {

    Random generator = new Random();
    for (int i = 0; i < 10; i++) {
        System.out.println(generator.nextGaussian());
    }/*from   ww w . j av a  2  s.  c o  m*/

}

From source file:Random4.java

public static void main(String[] argv) throws IOException {
    // java.util.Random methods are non-static, do need to construct Math
    Random r = new Random();
    PrintWriter file1 = new PrintWriter(new FileWriter("file1"));
    PrintWriter file2 = new PrintWriter(new FileWriter("file2"));
    for (int i = 0; i < 10000; i++) {
        file1.println(r.nextDouble());//from  ww w  . j  a v  a  2  s  . c  o  m
        file2.println(r.nextGaussian());
    }
    file1.close();
    file2.close();
}