java key-value pair

/**
 * @author lautturi.com 
 * Java example: declare key-value pair in java
 */

import java.util.*;

public class Lautturi {

	public static void main(String[] args) {

		Map.Entry<String,String> pair=Map.entry("key","value");//since Java 9
		Map.Entry<String,String> tuple=new AbstractMap.SimpleEntry("key2","value2");//until Java 8
		
		String key1=pair.getKey();
		String value1=pair.getValue();
		
		String key2=tuple.getKey();
		String value2=tuple.getValue();
		
		System.out.println(key1);
		System.out.println(value1);
		System.out.println(key2);
		System.out.println(value2);
		
		Map.Entry<Integer,String> pair2=Map.entry(1,"value");
		
	}
}

output:

key
value
key2
value2