How to get keys and values from Map in Java?
In this section, we will show you h ow to get keys and values from Map in Java. Java 8 Example import java.util.HashMap ; import java.util.Map ; public class Main { public static void main ( String [] args) { Map < String , String > map = new HashMap<>(); map .put( "host" , "knowledgefactory.net" ); map .put( "username" , "knowledgefactory" ); map .put( "password" , "mypassword" ); // Java 8 map .forEach((k, v) -> { System . out .println( "Key: " + k + ", Value: " + v); }); } } Console Output: Key: password, Value: mypassword Key: host, Value: knowledgefactory.net Key: username, Value: knowledgefactory Old style import java.util.Collection ; import java.util.HashMap ; import java.util.Map ; import java.util.Set ; public class Main { public static void main ( String [] args) { Map < String , String >