isEmpty()
method of java.util.ArrayList
class is used for checking whether the list is empty or not. This method returns a boolean value.
public boolean isEmpty()
It returns true if the list is empty otherwise it gives false.
Example
package beginnersbook.com; import java.util.ArrayList; public class IsEmptyExample { public static void main(String args[]) { //ArrayList of Integer Type ArrayList<Integer> al = new ArrayList<Integer>(); //Checking whether the list is empty System.out.println("Is ArrayList Empty: "+al.isEmpty()); //Adding Integer elements al.add(1); al.add(88); al.add(9); al.add(17); //Again checking for isEmpty System.out.println("Is ArrayList Empty: "+al.isEmpty()); //Displaying elements of the list for (Integer num: al) { System.out.println(num); } } }
Output:
Is ArrayList Empty: true Is ArrayList Empty: false 1 88 9 17
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