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  1. import java.util.HashMap;
  2. import java.util.Map;
  3. import java.util.function.BiConsumer;
  4.  
  5. class Ideone {
  6.   public static void main(String[] args) {
  7.     Map<String, String> map = new HashMap<>();
  8.     add(map, "foo", "bar");
  9.     System.out.println(map);
  10.  
  11.     GenericRecord<String, String> record = new GenericRecord<>();
  12.     add(record, "foo", "bar");
  13.     System.out.println(record);
  14.   }
  15.  
  16.   static <K, V> void add(Map<K, V> map, K key, V value) {
  17.     add(map::put, key, value);
  18.   }
  19.  
  20.   static <K, V> void add(GenericRecord<K, V> record, K key, V value) {
  21.     add(record::put, key, value);
  22.   }
  23.  
  24.   static <K, V> void add(BiConsumer<K, V> consumer, K key, V value) {
  25.     consumer.accept(key, value);
  26.   }
  27. }
  28.  
  29. class GenericRecord<K, V> {
  30.   private final Map<K, V> map = new HashMap<>();
  31.  
  32.   void put(K key, V value) {
  33.     map.put(key, value);
  34.   }
  35.  
  36.   @Override
  37.   public String toString() {
  38.     return "GenericRecord(map = " + map + ")";
  39.   }
  40. }
Success #stdin #stdout 0.14s 48160KB
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Standard input is empty
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{foo=bar}
GenericRecord(map = {foo=bar})
https://ideone.com/CoqvJb
language:
Java (HotSpot 12)
created:
2 years ago
visibility:
secret

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