Example usage for java.util OptionalDouble getAsDouble

Introduction

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

Prototype

public double getAsDouble() 

Source Link

Document

If a value is present, returns the value, otherwise throws NoSuchElementException .

Usage

From source file:Main.java

public static void main(String[] args) {
    IntStream i = IntStream.of(6, 5, 7, 1, 2, 3, 3);
    OptionalDouble d = i.average();
    if (d.isPresent()) {
        System.out.println(d.getAsDouble());
    } else {//from  w w  w.  j a  va2s . c  o m
        System.out.println("no value");
    }
}

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From source file:Main.java

public static void main(String[] args) {
    DoubleStream b = DoubleStream.of(1.1, 2.2, 3.3, 4.4, 5.5);
    OptionalDouble d = b.findAny();
    if (d.isPresent()) {
        System.out.println(d.getAsDouble());
    } else {//from   w ww  .  j a  v  a  2  s .c  om
        System.out.println("no data");
    }
}

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From source file:Main.java

public static void main(String[] args) {
    DoubleStream d = DoubleStream.of(1.2, 2.3, 4.5);

    OptionalDouble v = d.min();

    if (v.isPresent()) {
        System.out.println(v.getAsDouble());
    } else {/*from   ww w.  j  a  va2  s  .  c om*/
        System.out.println("no value");
    }
}

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From source file:Main.java

public static void main(String[] args) {
    DoubleStream d = DoubleStream.of(1.2, 2.3, 4.5);

    OptionalDouble v = d.max();

    if (v.isPresent()) {
        System.out.println(v.getAsDouble());
    } else {//  w  w w . ja  v  a  2  s  . co  m
        System.out.println("no value");
    }
}

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From source file:Main.java

public static void main(String[] args) {
    DoubleStream b = DoubleStream.of(1.1, 2.2, 3.3, 4.4, 5.5);
    OptionalDouble d = b.findFirst();
    if (d.isPresent()) {
        System.out.println(d.getAsDouble());
    } else {/*  w w w.  j  a v a 2s . c om*/
        System.out.println("no data");
    }
}

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From source file:Main.java

public static void main(String[] args) {
    LongStream b = LongStream.of(1L, 2L, Long.MAX_VALUE, Long.MIN_VALUE);
    OptionalDouble o = b.average();

    if (o.isPresent()) {
        System.out.println(o.getAsDouble());
    } else {//from  w w  w .  j  a v a2  s.com
        System.out.println("no value");
    }
}

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From source file:Main.java

public static void main(String[] args) {
    DoubleStream d = DoubleStream.of(1.2, 2.3, 4.5);

    OptionalDouble v = d.average();

    if (v.isPresent()) {
        System.out.println(v.getAsDouble());
    } else {//from   w w w  . ja va 2s .  com
        System.out.println("no value");
    }
}

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From source file:Main.java

public static void main(String[] args) {
    DoubleStream b = DoubleStream.of(1.1, 2.2, 3.3, 4.4, 5.5);

    OptionalDouble d = b.reduce(Double::sum);
    if (d.isPresent()) {
        System.out.println(d.getAsDouble());
    } else {//from  ww  w .  jav  a  2s .  c  om
        System.out.println("no value");
    }
}

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From source file:Main.java

public static void main(String[] args) {
    OptionalDouble income = Employee.persons().stream().mapToDouble(Employee::getIncome).max();

    if (income.isPresent()) {
        System.out.println("Highest income:   " + income.getAsDouble());
    } else {//  ww w  .  j  av  a  2 s  .c  o m
        System.out.println("Could not  get   the   highest income.");
    }
}

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From source file:gr.iti.mklab.reveal.forensics.util.Util.java

/**
 * Calculate histogram//from   ww  w .j  av  a  2 s. com
 */

public static int[] createhistogram(double[] zmat, int bins) throws IOException {

    OptionalDouble max = DoubleStream.of(zmat).max();
    OptionalDouble min = DoubleStream.of(zmat).min();
    int[] result = new int[bins];
    double binSize = (max.getAsDouble() - min.getAsDouble()) / bins;

    for (double d : zmat) {
        int bin = (int) ((d - min.getAsDouble()) / binSize);
        if (bin < 0) {
            /* this data is smaller than min */ System.out.println("this data point is smaller than min " + d);
        } else if (bin >= bins) { /* this data point is bigger than max */
            result[bin - 1] += 1;
        } else {
            result[bin] += 1;
        }
    }

    return result;
}

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