Answered: Write a for loop to initialize the…

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Related questions

Question

Write a for loop to initialize the objects in the ArrayList created in question number 2 above to -1.

import java.util.*;

public class test {

public static void main(String[] args)

{

int n = 25;

ArrayList<Integer> list = new ArrayList<Integer>(n);

for(int i = 0;i<n;i++){

list.add(-1);

}

for(int i = 0;i<n;i++){

System.out.print(list.get(i) + " ");

}

Write Java statements to add the integers 1001, 1100, and 1110 to the resulting ArrayList .

Expert Solution

Introduction

ArrayList is a dynamic data structure class that takes Object data type. The array list grows and shrinks as and when elements are added and removed from the array list. The array list all takes wrapper (Integer, Double, Float, etc) data types while declaring the object of the array list. The add(element) method allows to add the element to the array list and the size() method returns the number of elements in the array list. The get(index) method returns the element at the position of, index.