• Java Data Structures Tutorial

Verifying if a Stack is empty



The Stack class of the java.util package provides a isEmpty() method. This method verifies whether the current Stack is empty or not. If the given vector is empty this method returns true else it returns false.

Example

import java.util.Stack;
public class StackIsEmpty {
   public static void main(String args[]) {
      Stack stack = new Stack();
      stack.push(455);
      stack.push(555);
      stack.push(655);
      stack.push(755);
      stack.push(855);
      stack.push(955);
      System.out.println("Contents of the stack :"+stack);
      stack.clear();
      System.out.println("Contents of the stack after clearing the elements :"+stack);
      
      if(stack.isEmpty()) {
         System.out.println("Given stack is empty");    	  
      } else {
         System.out.println("Given stack is not empty");  
      }
   }
}

Output

Contents of the stack :[455, 555, 655, 755, 855, 955]
Contents of the stack after clearing the elements :[]
Given stack is empty
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