Stack empty() Method in Java

The java.util.Stack.empty() method in Java is used to check whether a stack is empty or not. The method is of boolean type and returns true if the stack is empty else false.

Syntax:

STACK.empty()

Parameters: The method does not take any parameters.

Return Value: The method returns boolean true if the stack is empty else it returns false.

Below programs illustrate the working of java.util.Stack.empty() method:
Program 1:

// Java code to demonstrate empty() method
import java.util.*;

public class Stack_Demo {
    public static void main(String[] args)
    {

        // Creating an empty Stack
        Stack<String> STACK = new Stack<String>();

        // Stacking strings
        STACK.push("Geeks");
        STACK.push("4");
        STACK.push("Geeks");
        STACK.push("Welcomes");
        STACK.push("You");

        // Displaying the Stack
        System.out.println("The stack is: " + STACK);

        // Checking for the emptiness of stack
        System.out.println("Is the stack empty? " +
                                      STACK.empty());

        // Popping out all the elements
        STACK.pop();
        STACK.pop();
        STACK.pop();
        STACK.pop();
        STACK.pop();

        // Checking for the emptiness of stack
        System.out.println("Is the stack empty? " +
                                     STACK.empty());
    }
}

Output:

The stack is: [Geeks, 4, Geeks, Welcomes, You]
Is the stack empty? false
Is the stack empty? true

Program 2:

// Java code to demonstrate empty() method
import java.util.*;

public class Stack_Demo {
    public static void main(String[] args)
    {

        // Creating an empty Stack
        Stack<Integer> STACK = new Stack<Integer>();

        // Stacking int values
        STACK.push(8);
        STACK.push(5);
        STACK.push(9);
        STACK.push(2);
        STACK.push(4);

        // Displaying the Stack
        System.out.println("The stack is: " + STACK);

        // Checking for the emptiness of stack
        System.out.println("Is the stack empty? " +
                                      STACK.empty());
    }
}

Output:

The stack is: [8, 5, 9, 2, 4]
Is the stack empty? false