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Java - clear HashSet
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In this article, we would like to show you how to clear the HashSet in Java.
Quick solution:
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myHashSet.clear();
In this example, we use clear() method to remove all items from the letters HashSet.
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package hashsetOperations;2
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import java.util.*;4
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public class Example {6
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public static void main(String[] args) {8
Set<String> letters = new HashSet<>();9
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letters.add("A");11
letters.add("B");12
letters.add("C");13
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System.out.println("Before: " + letters); // [A, B, C]15
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letters.clear(); // removes all items17
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System.out.println("After: " + letters); // []19
}20
}Output:
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Before: [A, B, C]2
After: []