ComparatorExampleForBuildInDataType.java Source code

Introduction

Here is the source code for ComparatorExampleForBuildInDataType.java

Source

import org.apache.commons.collections.ComparatorUtils;
import org.apache.commons.collections.comparators.BooleanComparator;
import org.apache.commons.collections.comparators.FixedOrderComparator;

import java.util.Arrays;
import java.util.Comparator;

public class ComparatorExampleForBuildInDataType {

    private static Comparator boolComp;
    private static Comparator fixedComp;

    private static Boolean boolParams[] = { new Boolean(true), new Boolean(true), new Boolean(false),
            new Boolean(false) };
    private static String stringParams[] = { "Russia", "Canada", "USA", "Australia", "India" };

    public static void main(String args[]) {
        ComparatorExampleForBuildInDataType example = new ComparatorExampleForBuildInDataType();
        example.createComparators();

        Arrays.sort(boolParams, boolComp);

        example.printArray(boolParams);

        Arrays.sort(stringParams);

        example.printArray(stringParams);

        Arrays.sort(stringParams, fixedComp);

        example.printArray(stringParams);
    }

    private void createComparators() {
        boolComp = ComparatorUtils.booleanComparator(true);
        fixedComp = new FixedOrderComparator(stringParams);
    }

    private void printArray(Object[] array) {
        for (int i = 0; i < array.length; i++)
            System.err.println(array[i]);
    }

}