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How do I empty a list in Java?
Solution
We can clear a list easily using its clear() method.
Syntax
void clear()
Removes all the elements of the list.
Throws
UnsupportedOperationException − If the clear operation is not supported by this list
Example
The following example shows how to clear elements from the list using the clear() method.
package com.tutorialspoint;
import java.util.ArrayList;
import java.util.List;
public class CollectionsDemo {
public static void main(String[] args) {
// Create a list object
List<Integer> list = new ArrayList<>();
// add elements to the list
list.add(1);
list.add(2);
list.add(3);
list.add(4);
list.add(5);
list.add(6);
// print the list
System.out.println(list);
list.clear();
System.out.println(list);
}
}Output
This will produce the following result −
[1, 2, 3, 4, 5, 6] []
Updated on: 09-May-2022
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