Need help with HashMap

Question

In the code snippet below the method removeItemFromMap removes the value that is less than 500 from the map.
It doesn't return anything.

How shall i access the method(removeItemFromMap) in which all values less than 500 are removed.
https://code.sololearn.com/cQC8khD1H503/?ref=app

Answer 1

As you tried, just call the method.. And print map again to see differences...

public static void main(String[] args)
{
HashMap<String,Integer> m= createMap();

for(HashMap.Entry<String, Integer>pair : m.entrySet())
System.out.println(pair.getKey() + " : " + pair.getValue());

removeItemFromMap(m);

for(HashMap.Entry<String, Integer>pair : m.entrySet())
System.out.println(pair.getKey() + " : " + pair.getValue());

//System.out.println(m);
}

Answer 2

parameter for remove() is key, not value so this is enough:

map.remove(pair.getKey() );
//map.remove(pair.getValue() );

the alternative way to print a map is
System.out.println(m.toString() .replace(",", ",\n") );