Code in java show proper comments on each line of code show output on Eclipse co

Question

Code in java show proper comments on each line of code

show output on Eclipse console

This assignment will help you to master the following concepts: HashMap Comparator 3. Prerequisites Not applicable. 4. Associated Data Files Not applicable. 5. Problem Statement Create a HashMap object in the Java Program and perform the following functionalities Add key value pairs to the HashMap object Add a key-value pair to the HashMap object if the key-value pair doesn't exist already. Retrieve a value associated with a given key from the HashMap. Clear all the key-value pair present in the HashMap.

Explanation / Answer

package zasda;
import java.util.HashMap;
import java.util.Map;
import java.util.Iterator;
import java.util.Set;
public class Details {

   public void mapadd(int key , String value , HashMap hmap){

    if (hmap.containsKey(key) || hmap.containsValue(value)){

        hmap.put(key, value);

    }
   }
public static void main(String args[]) {

/* This is how to declare HashMap */
HashMap<Integer, String> hmap = new HashMap<Integer, String>();

/*Add key value pair to hash map*/
hmap.put(12, "Sims");// adding key and a value in hmap

hmap.put(15, "agha");// enter the respective value of key and object to store in hmap
hmap.get(12); // enter the key value of the object to be fetched
hmap.clear();// used to clear all the values in hmap
}

}

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