Java: Empty an array list

Last update on March 12 2025 13:34:49 (UTC/GMT +8 hours)

Write a Java program to empty an array list.

Pictorial Presentation:

Sample Solution:-

Java Code:

import java.util.ArrayList;
import java.util.Collections;
  public class Exercise17 {
  public static void main(String[] args) {
          ArrayList<String> c1= new ArrayList<String>();
          c1.add("Red");
          c1.add("Green");
          c1.add("Black");
          c1.add("White");
          c1.add("Pink");
          System.out.println("Original array list: " + c1);
          c1.removeAll(c1);
          System.out.println("Array list after remove all elements "+c1);   
   }
}

Sample Output:

Original array list: [Red, Green, Black, White, Pink]                  
Array list after remove all elements []

Flowchart:

For more Practice: Solve these Related Problems:

• Write a Java program to clear an ArrayList using the clear() method and then check its size.
• Write a Java program to remove all elements from an ArrayList by repeatedly calling remove() in a loop.
• Write a Java program to create a method that empties an ArrayList and returns a boolean indicating success.
• Write a Java program to implement a lambda expression that empties an ArrayList and then verifies if it is empty.

Java Code Editor:

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