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import java.util.HashMap;

public class HashMapDemo {

public static void main(String[] args) {

HashMap<String,Double> grades = new HashMap<>();

viewGrades(grades);

}

static void viewGrades(HashMap<String,Double> grades){

grades.put("Pesho",6.00);

grades.put("Stamat",5.45);

grades.put("SahilJay",4.30);

grades.put("Minka",3.00);

grades.put("Unufri",2.00);

if(grades.containsKey("Pepa")){

System.out.println("Pepa is here");

}

else{

grades.put("Pepa",4.5);

}

System.out.println(grades);

}

}