Fig. $3\mathrm{.}9$

$//$ Fig. $3\mathrm{.}9$: AccountTest.java

$//$ Inputting and outputting floating$-$point numbers with Account

objects.

$3$ import java.util.Scanner;

$4$

$5$ public class AccountTest $\{$

public static void main$($String$[]$ args$)\{$

Account account$1=$ new Account$("$Jane Green", $50\mathrm{.}00)$;

Account account$2=$ new Account$("$John Blue", $-7\mathrm{.}53)$;

$//$ display initial balance of each object

System.out.printf$("\%$s balance: $$\%\mathrm{.}2$f$\%$n$",$

account$1.$getName$(),$ account$1.$getBalance$())$;

System.out.printf$("\%$s balance: $$\%\mathrm{.}2$f$\%$n$\%$n$",$

account$2.$getName$(),$ account$2.$getBalance$())$;

$//$ create a Scanner to obtain input from the command window

Scanner input $=$ new Scanner$($

System.in$)$;

System.out.print$("$Enter deposit amount for account$1$: $")$; $//$

prompt

$20$ double depositAmount $=$ input.nextDouble$()$; $//$ obtain user input

$21$ System.out.printf$("\%$nadding $\%\mathrm{.}2$f to account$1$ balance$\%$n$\%$n$",$

$22$ depositAmount$)$;

$23$ account$1.$deposit$($depositAmount$)$; $//$ add to account$1\text{'}$s balance $//$ display balances

System.out.printf$("\%$s balance: $$\%\mathrm{.}2$f$\%$n$",$

account$1.$getName$(),$ account$1.$getBalance$())$;

System.out.printf$("\%$s balance: $$\%\mathrm{.}2$f$\%$n$\%$n$",$

account$2.$getName$(),$ account$2.$getBalance$())$;

System.out.print$("$Enter deposit amount for account$2$: $")$; $//$

depositAmount $=$ input.nextDouble$()$; $//$ obtain user input

System.out.printf$("\%$nadding $\%\mathrm{.}2$f to account$2$ balance$\%$n$\%$n$",$

depositAmount$)$;

account$2.$deposit$($depositAmount$)$; $//$ add to account$2$ balance

$//$ display balances

System.out.printf$("\%$s balance: $$\%\mathrm{.}2$f$\%$n$",$

account$1.$getName$(),$ account$1.$getBalance$())$;

System.out.printf$("\%$s balance: $$\%\mathrm{.}2$f$\%$n$\%$n$",$

account$2.$getName$(),$ account$2.$getBalance$())$;

$\}$

$\}$Java $3\mathrm{.}15($Removing Duplicated Code in Method main$)$ In the AccountTest class of Fig$\mathrm{.}3\mathrm{.}9,$ method main contains six statements $($lines $1112,1314,2627,2829,3839$ and $4041)$ that each display an Account object$$s name and balance. Study these statements and you$$ll notice that they differ only in the Account object being manipulated$$account$1$ or account$2.$ In this exercise, you$$ll define a new displayAccount method that contains one copy of that output statement. The method$$s parameter will be an Account object and the method will output the object$$s name and balance. You$$ll then replace the six duplicated statements in main with calls to displayAccount, passing as an argument the specific Account object to output.