package net.javaguides.lang;
import java.util.HashMap;
import java.util.Map;
public class MapNullOrEmptyExample {
public static void main(String[] args) {
System.out.println(isNullOrEmptyMap(null));
System.out.println(isNullOrEmptyMap(new HashMap < > ()));
Map < String, String > map = new HashMap < > ();
map.put("key1", "value1");
map.put("key2", "value2");
System.out.println(isNotNullOrEmptyMap(map));
System.out.println(isNullOrEmptyMap(map));
}
public static boolean isNullOrEmptyMap(Map << ? , ? > map) {
return (map == null || map.isEmpty());
}
public static boolean isNotNullOrEmptyMap(Map << ? , ? > map) {
return !isNullOrEmptyMap(map);
}
}