Question

Using the USPRES.TXT file complete the following:

Create a dialog where a user would select 'search by last name' and 'search by first name'.

use a select statement to determine which routine your will run. You can use procedures and functions if you want.Ensure your code is well documented.

Turn in all work.

Using the USPRES.TXT file complete the following:

Create a dialog where a user would select 'search by last name' and 'search by first name'.

use a select statement to determine which routine your will run. You can use procedures and functions if you want.Ensure your code is well documented.

Turn in all work.

[George Washington

John Adams

Thomas Jefferson

James Madison

James Monroe

John Q. Adams

Andrew Jackson

Martin Van Buren

William Harrison

John Tyler

James Polk

Zachary Taylor

Millard Fillmore

Franklin Pierce

James Buchanan

Abraham Lincoln

Andrew Johnson

Ulysses Grant

Rutherford Hayes

James Garfield

Chester Arthur

Grover Cleveland

Benjamin Harrison

Grover Cleveland

William McKinley

Theodore Roosevelt

William Taft

Woodrow Wilson

Warren Harding

Calvin Coolidge

Herbert Hoover

Franklin Roosevelt

Harry Truman

Dwight Eisenhower

John Kennedy

Lyndon Johnson

Richard Nixon

Gerald Ford

James Carter

Ronald Reagan

George H. W. Bush

Bill Clinton

George W. Bush

Barack Obama]

Update

Case statement for each of the options.

Search for President by first name or last name.

** open file, read in each row, parse out the name part, perform a match on names, if match return full name, else move to next row. Have message if you each the end without a match.

USE METHODS!

Update

Case statement for each of the options.

Search for President by first name or last name.

** open file, read in each row, parse out the name part, perform a match on names, if match return full name, else move to next row. Have message if you each the end without a match.

USE METHODS!

I NEED TO WRITE JAVA PROJECT IN THIS QUESTION

Answer 1

=======================

JAVA PROGRAM

=======================

package test.president;

import java.io.File;
import java.io.FileNotFoundException;
import java.util.Scanner;

public class PresidentSearch {
   private Scanner sc = null;
   private static final String FILENAME = "USPRES.txt"; //constant filename
   //constructor
   public PresidentSearch(){
       sc = new Scanner(System.in);//to read user input
   }
  
   //main method
   public static void main(String[] args){
       PresidentSearch ps = new PresidentSearch(); //create instance
       System.out.println("Enter 1 to search by firstName and 2 to search by lastName");
       int entry = -1;
       try{
       entry = Integer.parseInt(ps.readInput()); //read user entry
       }catch(NumberFormatException n){
           System.out.println("Invalid entry!");
           return;
       }
       switch(entry){ //use switch case to appropriately call searchby First or last name
           case 1: ps.searchByFirstName();break;
           case 2: ps.searchByLastName();break;
           default: System.out.println("Invalid entry!");
       }
      
       ps.closeScanner();//close scanner
   }
  
   private String readInput(){
       return sc.nextLine();
   }
  
   //set scanner to read from file
   private void setScanner(String filename){
       File file = new File(filename);
       try {
           sc = new Scanner(file);
       } catch (FileNotFoundException e) {
           System.out.println("File is not found!");
           sc = null;
       }
   }
  
   /**
   * this will search presidents with first name
   */
   private void searchByFirstName(){
       System.out.println("Enter first name to search:");
       String firstName = readInput();
      
       setScanner(FILENAME);
      
       if(sc!=null){
           StringBuilder sb = new StringBuilder();
           while(sc.hasNextLine()){
               String fullname = sc.nextLine();
               String nameArr[] = fullname.split(" "); //split the name
              
               //do case insensitive check if first name matches
               if(nameArr[0].equalsIgnoreCase(firstName)){
                   sb.append(fullname);//add to string builder
                   sb.append("\n");
               }
           }
           //if no result found string builder will be empty
           if(sb.toString().isEmpty()){
               System.out.println("No Result Found!");
           }else{
               System.out.println("Presidents with first name as "+firstName+" :");
               System.out.println(sb.toString());
           }
       }
   }
   /**
   * serach all presidents with user input last name
   */
   private void searchByLastName(){
       System.out.println("Enter last name to search:");
       String lastName = readInput();
      
       setScanner(FILENAME);
       if(sc!=null){
           StringBuilder sb = new StringBuilder();
           while(sc.hasNextLine()){
               String fullname = sc.nextLine();
               String nameArr[] = fullname.split(" ");
               int lastIndex = nameArr.length -1;
              
               if(nameArr[lastIndex].equalsIgnoreCase(lastName)){
                   sb.append(fullname);
                   sb.append("\n");
               }
           }
          
           if(sb.toString().isEmpty()){
               System.out.println("No Result Found!");
           }else{
               System.out.println("Presidents with first name as "+lastName+" :");
               System.out.println(sb.toString());
           }
       }
   }
  
   private void closeScanner(){
       if(sc!=null){
           sc.close();
       }
   }

}

=======================

OUTPUT

=======================

RUN1

Enter 1 to search by firstName and 2 to search by lastName
1
Enter first name to search:
john
Presidents with first name as john :
John Adams
John Q. Adams
John Tyler
John Kennedy

Run2

Enter 1 to search by firstName and 2 to search by lastName
2
Enter last name to search:
bush
Presidents with first name as bush :
George H. W. Bush
George W. Bush

Run3

Enter 1 to search by firstName and 2 to search by lastName
1
Enter first name to search:
anand
No Result Found!