Java HashMap.remove(Object key)
Syntax
HashMap.remove(Object key) has the following syntax.
public V remove(Object key)
Example
In the following code shows how to use HashMap.remove(Object key) method.
/*from w w w . ja va 2 s . co m*/
import java.util.HashMap;
public class Main {
public static void main(String args[]) {
HashMap<Integer, String> newmap = new HashMap<Integer, String>();
// populate hash map
newmap.put(1, "tutorials");
newmap.put(2, "from");
newmap.put(3, "java2s.com");
System.out.println("Values before remove: "+ newmap);
// remove value for key 2
newmap.remove(2);
System.out.println("Values after remove: "+ newmap);
}
}
The code above generates the following result.
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