Example usage for java.util Comparator naturalOrder

Introduction

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

Prototype

@SuppressWarnings("unchecked")
public static <T extends Comparable<? super T>> Comparator<T> naturalOrder()

Source Link

Document

Returns a comparator that compares Comparable objects in natural order.

Usage

From source file:org.opensingular.lib.wicket.util.lambda.ILambdasMixin.java

@SuppressWarnings("unchecked")
default <T, R extends Comparable<R>> Comparator<T> compareWith(IFunction<T, R> func) {
    return (T a, T b) -> ComparatorUtils.nullLowComparator(Comparator.naturalOrder()).compare(func.apply(a),
            func.apply(b));//  w w  w . ja v a2  s .  co m
}

From source file:org.pdfsam.ui.selection.multiple.LoadingColumn.java

public Comparator<PdfDescriptorLoadingStatus> comparator() {
    return Comparator.naturalOrder();
}

From source file:org.pdfsam.ui.selection.multiple.PaceColumn.java

@Override
public Comparator<String> comparator() {
    return Comparator.naturalOrder();
}

From source file:org.talend.dataprep.util.SortAndOrderHelper.java

/**
 * Return the string comparator to use for the given order name.
 *
 * @param orderKey the name of the order to apply.
 * @return the string comparator to use for the given order name.
 *///  ww w .  j a v a 2 s . c  om
private static Comparator<String> getOrderComparator(String orderKey) {

    final Comparator<String> comparisonOrder;

    // Select order (asc or desc)
    final Order order;
    try {
        order = Order.valueOf(orderKey.toUpperCase());
    } catch (IllegalArgumentException e) {
        throw new TDPException(CommonErrorCodes.ILLEGAL_ORDER_FOR_LIST, build().put("order", orderKey));
    }

    switch (order) {
    case ASC:
        comparisonOrder = Comparator.naturalOrder();
        break;
    case DESC:
        comparisonOrder = Comparator.reverseOrder();
        break;
    default:
        // this should not happen
        throw new TDPException(CommonErrorCodes.ILLEGAL_ORDER_FOR_LIST, build().put("order", orderKey));
    }
    return comparisonOrder;
}

From source file:org.xlrnet.tibaija.util.ComplexComparator.java

@Override
public int compare(Complex o1, Complex o2) {
    boolean isNoneImaginary = o1.getImaginary() == 0 && o2.getImaginary() == 0;
    boolean isNoneReal = o1.getReal() == 0 && o2.getReal() == 0;

    if (isNoneImaginary && isNoneReal) // Comparison of zero and zero -> equal
        return 0;

    if (!isNoneImaginary && !isNoneReal) // Comparison of complex and imaginary 
        throw new UnsupportedOperationException(
                "Comparison of complex numbers with imaginary part is not allowed");
    if (isNoneImaginary)
        return Objects.compare(o1.getReal(), o2.getReal(), Comparator.naturalOrder());
    else/*from w  w w  .  j  a v a2  s . c o m*/
        return Objects.compare(o1.getImaginary(), o2.getImaginary(), Comparator.naturalOrder());
}