Question

Java.

Create a program called StatesArray that begins by asking the user how many states they wish to enter. Create an array of that size which stores USAState objects. Use a loop to get input necessary to create USAState objects and put them in the array. Then, do the following

- Output a list of all capital cities in the array.

- Prompt the user for a state name, then report whether or not the state is in the array.

Answer 1

Hello, here is the completed code you wanted. Every important statement is explained using comments. Please check and let me know if you have any doubts. Thanks.

StatesArray.java

import java.io.*;

public class StatesArray {

    public static void main(String[] args) throws Exception {

        int numState; //variable for number of states
        int k = 0;
        String state; //variable for user's state
        BufferedReader input = new BufferedReader(new InputStreamReader(System.in)); //to read inputs
        System.out.println("Enter number of states");
        numState = Integer.parseInt(input.readLine()); //to input how many states user wish to enter
        String[] USAState = new String[numState]; // initializing array of USAState objects
        System.out.println("Enter the States");
        for (int i = 0; i < USAState.length; i++) {
            //inputs the USAState objects as user wish to enter
            USAState[i] = input.readLine();
        }
        System.out.println("States in the array list is");
        for (int i = 0; i < numState; i++) {
            //outputs all states in the array
            System.out.println(USAState[i]);
        }
        System.out.println("Enter your State");
        state = input.readLine(); //prompt the user for a state name
        for (int i = 0; i < numState; i++, k++) {
            //comparing each state in the array with user's state
            if (state.equals(USAState[i])) {
                //prints if state is in the array
                System.out.println("Your state is in the list");
                break;
            }
        }
        if (k == numState) {
            //prints if state is not in the list
            System.out.println("Your state is not in the list");
        }
    }
}

OUTPUT

Enter number of states

4

Enter the States

Alabama

New York

Texas

California

States in the array list is

Alabama

New York

Texas

California

Enter your State

New York

Your state is in the list

Enter number of states

4

Enter the States

Alabama

New York

Texas

California

States in the array list is

Alabama

New York

Texas

California

Enter your State

Maryland

Your state is not in the list