Stack push() Method in Java

The Java.util.Stack.push(E element) method is used to push an element into the Stack. The element gets pushed onto the top of the Stack.

Syntax:

STACK.push(E element)

Parameters: The method accepts one parameter element of type Stack and refers to the element to be pushed into the stack.

Return Value: The method returns the argument passed.

Below programs illustrate the Java.util.Stack.push() method:

Program 1: Adding String elements into the Stack.

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// Java code to illustrate push() method
  
import java.util.*;
  
public class StackDemo {
    public static void main(String args[])
    {
        // Creating an empty Stack
        Stack<String> STACK = new Stack<String>();
  
        // Use push() to add elements into the Stack
        STACK.push("Welcome");
        STACK.push("To");
        STACK.push("Geeks");
        STACK.push("For");
        STACK.push("Geeks");
  
        // Displaying the Stack
        System.out.println("Initial Stack: " + STACK);
  
        // Pushing elements into the stack
        STACK.push("Hello");
        STACK.push("World");
  
        // Displaying the final Stack
        System.out.println("Final Stack: " + STACK);
    }
}

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Output:


Initial Stack: [Welcome, To, Geeks, For, Geeks]
Final Stack: [Welcome, To, Geeks, For, Geeks, Hello, World]





Program 2: Adding Integer elements into the Stack.











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// Java code to illustrate push() method 


import java.util.*; 


  


public class StackDemo { 


    public static void main(String args[]) 


    { 


        // Creating an empty Stack 


        Stack<Integer> STACK = new Stack<Integer>(); 


  


        // Use push() to add elements into the Stack 


        STACK.push(10); 


        STACK.push(15); 


        STACK.push(30); 


        STACK.push(20); 


        STACK.push(5); 


  


        // Displaying the Stack 


        System.out.println("Initial Stack: " + STACK); 


  


        // Pushing elements into the Stack 


        STACK.push(1254); 


        STACK.push(4521); 


  


        // Displaying the final Stack 


        System.out.println("Final Stack: " + STACK); 


    } 


} 



















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Output:


Initial Stack: [10, 15, 30, 20, 5]
Final Stack: [10, 15, 30, 20, 5, 1254, 4521]






          
          
          
          

            

    

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