<\/span><\/h2>\nThe first approach to sorting a TreeMap by value is by using a custom Comparator. We will create a method that takes the TreeMap as input and returns a SortedSet of its entries, sorted based on values.<\/p>\n
“`java
\nimport java.util.*;<\/p>\n
public class TreeMapSortByValue {
\n public static > SortedSet> sortByValue(TreeMap map) {
\n SortedSet> sortedEntries = new TreeSet<>((entry1, entry2) -> {
\n int result = entry1.getValue().compareTo(entry2.getValue());
\n return (result != 0) ? result : 1;
\n });
\n sortedEntries.addAll(map.entrySet());
\n return sortedEntries;
\n }<\/p>\n public static void main(String[] args) {
\n TreeMap treeMap = new TreeMap<>();
\n treeMap.put(“apple”, 5);
\n treeMap.put(“banana”, 2);
\n treeMap.put(“cherry”, 7);
\n treeMap.put(“date”, 1);<\/p>\n SortedSet> sortedEntries = sortByValue(treeMap);
\n for (Map.Entry entry : sortedEntries) {
\n System.out.println(entry.getKey() + “: ” + entry.getValue());
\n }
\n }
\n}
\n“`<\/p>\nIn the above code, we define a custom Comparator for sorting the entries based on their values. If two entries have the same value, we use the key’s natural ordering to break the tie. Finally, the sorted entries are added to a SortedSet, which represents our TreeMap sorted by value.<\/p>\n
How to sort a TreeMap by value in Java?<\/b>
\nTo sort a TreeMap by value in Java, you can use a custom Comparator and a SortedSet. The Comparator compares the values of the entries, and the SortedSet holds the sorted entries. By iterating over the SortedSet, you can access the sorted entries.<\/p>\n