Zero Exception – Java, Spring Boot & System Design Tutorials

Write a Java program to read n integers into LinkedList collection. Do the following operations. Display only negative integers and delete last element.

Program:

import java.io.*;
import java.util.*;

class LinkedListInt {
    public static void main(String args[]) throws IOException {
        LinkedList list = new LinkedList();
        int i,n,x;
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        System.out.println("How many integers:");
        n = Integer.parseInt(br.readLine());
        for(i=0;i<n;i++){
            System.out.println("Enter Number:");
            x = Integer.parseInt(br.readLine());
            list.add(x);
        }

        Iterator itr = list.iterator();
        while(itr.hasNext()){
            Integer y = (Integer)itr.next();
            int a = (int)y;
            if(a<0){
                System.out.println("Negative number:"+a);
            }
        }

        System.out.println("List before removing last element:"+list);
        list.removeLast();
        System.out.println("After removing:"+list);
    }
}