how to get java collection Map size() Method in Java With Examples
GIAN Tutorials
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How to get java collection Map size() Method in Java With Examples Map size() method in Java is used to get the total number entries i.e, key-value pair. So this method is useful when you want total entries present on the map. If the map contains more than Integer.MAX_VALUE elements return Integer.MAX_VALUE. Parameters: (This method does not take any parameters.) Return value (This method returns the number of key-value mappings in this map.) Syntax: int size(); Example 1: For non-generic input // Java program to illustrate // the Map size() Method import java.util.*; public class MapSizeExample { // Main Method public static void main(String[] args) { Map map = new HashMap(); // Adding key-values map.put(1, "delhi"); map.put(5, "mumbai"); map.put(2, "noida"); map.put(6, "meerut"); // using the method System.out.println("
