HashMap In Java

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package one;

import java.util.Map;

public class HashMap {

public static void main(String[] args) {

Map<Integer,String> map=new java.util.HashMap<Integer,String>();

map.put(1,"b1");
map.put(2,"b2");
map.put(3,"b3");

for(Integer i: map.keySet()) {
System.out.println(map.get(i));
}


}
}

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