Java stack using linked list

class StackUsingLinkedlist {
              private class Node {
                int data;
                Node next;
              }
            
              Node top;
            
              StackUsingLinkedlist() {
                this.top = null;
              }

            public void push(int data) {
              Node newNode = new Node();
              newNode.data = data;
              newNode.next = top;
              top = newNode;
            }
            
            public boolean isEmpty() {
              return top == null;
            }
            
            public int peek() {
              if (!isEmpty()) {
                return top.data;
              } else {
                System.out.println("Stack is empty");
                return -1;
              }
            }
            
            public void pop() {
              if (top == null) {
                System.out.print("\nStack empty");
                return;
              }
              top = top.next;
            }
            
            public void display() {
              if (top == null) {
                System.out.print("\nStack empty");
                exit(1);
              } else {
                Node node = top;
                while (node != null) {
                  System.out.printf("%d->", node.data);
                  node = node.next;
                }
              }
            }

Similar codes

1 vote306 views1 answer
How to create an array without knowing the size java
Java
0 vote313 views1 answer
Java get wrapper class for primitive
Java
1 vote337 views1 answer
Flutterwave bvn api
Java
7 votes309 views2 answers
Java console text color
Java
0 vote316 views1 answer
Junit 5 dependency maven
Java
8 votes328 views2 answers
Check if char is number java
Java
14 votes349 views1 answer
Formartted string java
Java
0 vote343 views2 answers
How to start activity in adapter android
Java
0 vote317 views2 answers
Hulu
Java
0 vote293 views2 answers
Int a ,b,z; a=1;b=4;while(a<b) { a=2*a; b=b 1; } z=b;
Java