Java Map foreach Example

Java Map foreach Example

Map

  Map<Integer, String> colourMap = new HashMap<>();

  colourMap.put(1, "RED");

  colourMap.put(2, "GREEN");

  colourMap.put(3, "BLUE");

  colourMap.put(4, "YELLOW");

  colourMap.put(5, "BLACK");

  colourMap.put(6, "WHITE");

  for (Map.Entry<Integer, String> color : colourMap.entrySet()){

System.out.println( color.getKey() + " -> " + color.getValue());

  }

Java 8 Lambdas

  colourMap.forEach((k, v) -> System.out.println((k + " -> " + v)));

Reference

https://docs.oracle.com/javase/1.5.0/docs/guide/language/foreach.html