Collection with strongly consistent iterator reflecting changes
I want to have a collection of items. Let’s call it the stock
Group keys of Map of List by values Java
I have a Map<String, List<String>> with values as below.
Java get Map Entry by String
I have the following situation:
Collections.binarySearch() using Collections.reverseOrder() as Comparator returns -1
package com.core.java.collections; import java.util.ArrayList; import java.util.Arrays; import java.util.Collections; import java.util.List; public class CollectionsBinarySearch { public static void main(String[] args) { List<Integer> al = new ArrayList<Integer>(); al.add(10); al.add(20); al.add(30); al.add(40); al.add(50); // The last parameter specifies the comparator // method used for sorting. int index = Collections.binarySearch( al, 50, Collections.reverseOrder()); System.out.println(“Found at index ” + index); […]