Question

How to search for specific key in a map with foreach and lambda expression in Java

Answer 1

import java.util.*; 

public class MyClass {
    public static void main(String args[]) {
        Map<String, Integer> map = new HashMap<>();
        
    	map.put("java", 1);
    	map.put("c++", 2);
    	map.put("c", 3);
    	map.put("c#", 4);
    	map.put("php", 5);

    	map.forEach((key, value)->{
    		if ("java".equals(key)) {
    			System.out.println("yes");
    		}
    	});
    }
}



/*
run:

yes

*/

 

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