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Remove single element from a HashSet in Java
To remove a single element from a HashSet, use the remove() method.
First, create a HashSet −
HashSet hs = new HashSet();
Now, add elements to the HashSet −
hs.add("R");
hs.add("S");
hs.add("T");
hs.add("V");
hs.add("W");
hs.add("Y");
hs.add("Z");Let us now remove an element −
hs.remove("R");The following is an example to remove a single element from a HashSet −
Example
import java.util.*;
public class Demo {
public static void main(String args[]) {
HashSet hs = new HashSet();
// add elements to the hash set
hs.add("R");
hs.add("S");
hs.add("T");
hs.add("V");
hs.add("W");
hs.add("Y");
hs.add("Z");
System.out.println(hs);
// removing a single element
hs.remove("R");
System.out.println(hs);
// removing another element
hs.remove("W");
System.out.println(hs);
}
}Output
[R, S, T, V, W, Y, Z] [S, T, V, W, Y, Z] [S, T, V, Y, Z]
Updated on: 30-Jul-2019
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