Remove All Element From Arraylist Example
Method 1:
We can remove all element of arraylist using clear() method . clear() removes all element from the list and return empty list.import java.util.ArrayList;
public class RemoveAll {
public static void main(String[] args) {
ArrayList<String> arr = new ArrayList<String>();
// add element in arraylist
arr.add("c");
arr.add("c");
arr.add("php");
arr.add("html");
arr.add("java");
// print arraylist
System.out.println("arrayList is = " + arr);
/*
* Removes all of the elements from this list.
*/
arr.clear();
System.out.println("After Clear arrayList is="+arr);
}
}
Output:
arrayList is = [c, c, php, html, java]
After Clear arrayList is=[]
Method 2:
import java.util.ArrayList;
public class RemoveAll2 {
public static void main(String[] args) {
ArrayList<String> arr = new ArrayList<String>();
// add element in arraylist
arr.add("c");
arr.add("php");
arr.add("html");
arr.add("java");
// print arraylist
System.out.println("Before Removing arrayList is = " + arr);
arr.removeAll(arr);
System.out.println("After Remove all element of aarraylist is="+arr);
}
}
Output:
Before Removing arrayList is = [c, php, html, java]
After Remove all element of aarraylist is=[]
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