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.
// 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); } } |
Initial Stack: [Welcome, To, Geeks, For, Geeks] Final Stack: [Welcome, To, Geeks, For, Geeks, Hello, World]
Program 2: Adding Integer elements into the Stack.
// 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); } } |
Initial Stack: [10, 15, 30, 20, 5] Final Stack: [10, 15, 30, 20, 5, 1254, 4521]
Attention reader! Don’t stop learning now. Get hold of all the important Java Foundation and Collections concepts with the Fundamentals of Java and Java Collections Course at a student-friendly price and become industry ready.