Java Collection, HashSet Exercises: Remove all of the elements from a hash set
Java Collection, HashSet Exercises: Exercise-12 with Solution
Write a Java program to remove all of the elements from a hash set.
Sample Solution:
Java Code:
import java.util.*;
public class Exercise12 {
public static void main(String[] args) {
// Create a empty hash set
HashSet<String> h_set = new HashSet<String>();
// use add() method to add values in the hash set
h_set.add("Red");
h_set.add("Green");
h_set.add("Black");
h_set.add("White");
System.out.println("Original hash set contains: "+ h_set);
// clear() method removes all the elements from a hash set
// and the set becomes empty.
h_set.clear();
// Display original hash set content again
System.out.println("HashSet content: "+h_set);
}
}
Sample Output:
Original hash set contains: [Red, White, Black, Green] HashSet content: []
Pictorial Presentation:
Flowchart:
Java Code Editor:
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