Java Collection Tutorial - Java Map.put(K key, V value)

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Syntax

Map.put(K key, V value) has the following syntax.

V put(K key, V value)

Example

In the following code shows how to use Map.put(K key, V value) method.

 /*  w  w  w  . ja va  2  s .c om*/
import java.util.HashMap;
import java.util.Map;

public class Main {
  public static void main(String[] a) {
    Map<String,String> map = new HashMap<String,String>();
    map.put("key1", "value1");
    map.put("key2", "value2");
    map.put("key3", "value3");

    System.out.println(map);
  }
}
  

The code above generates the following result.

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