ACTIVITY

$4\mathrm{.}6\mathrm{.}1$: For loops and strings.

$528040\mathrm{.}3489528.$qx$3$zqy$7$

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Declare a Boolean variable named isValidPasswd. Use isValidPasswd to output "Valid" if keyString contains no more than $5$ letters and keyString's length is greater than $7.$ Otherwise, output "Invalid".

Ex: If the input is GKYv$70$N$1,$ then the output is:

Valid

Ex: If the input is pzW $94P,$ then the output is:

Invalid

Note: Character.isLetter$()$ returns true if a character is a letter, and false otherwise. Ex: Character.isLetter$(\text{'}$a$\text{'})$ returns true. Character.isLetter$(\text{'}8\text{'})$ returns false.

import java.util.Scanner;

public class ValidInvalid $\{$

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

Scanner scnr $=$ new Scanner$($

System.in$)$;

String keystring;

V$*$ Additional variable declarations go here Type your additional code here $*/$

if $($isValidPasswd$)\{$

System.out.println$("$Valid$")$;

$\}$

else $\{$

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