Answered: Please someone hlep me, based on the…

Programming with Microsoft Visual Basic 2017

8th Edition

ISBN:9781337102124

Author:Diane Zak

Publisher:Diane Zak

Chapter2: Planning Applications And Designing Interfaces

Section: Chapter Questions

Problem 1MQ3

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Question

Q1 Please someone hlep me, based on the java code given how can i make the change to program run like the example given.

InvalidPasswordException.java

public class InvalidPasswordException extends Exception{
public InvalidPasswordException (String errMsg){
super(errMsg);
}

}

Password.java

public class Password {
private String passwordstr;

public Password (String passwordstr) throws InvalidPasswordException {
if (passwordstr== null ||passwordstr.equals("")) {
throw new InvalidPasswordException("Invalid password: password cannot be null or an empty string.");
} else {
int countDigits=0;

int countLetters=0;

for (int i=0; i<passwordstr.length();++i)

{
char ch = passwordstr.charAt(i);
if (Character.isDigit(ch))

countDigits++;

else if (Character.isLetter(ch))

countLetters++;

}

int countAlphaNumeric =countDigits + countLetters;
String errMsg = "";
if (countDigits == 0)
errMsg += "Your password should have at least 1 digit.\n";

if (countLetters==0)
errMsg += "Your password should have at least 1 digit.\n";

if(countAlphaNumeric <7)
errMsg += "Your password should have at least 7 alpha-numeric character.\n";

if (!errMsg.equals(""))
throw new InvalidPasswordException(errMsg);
}
this.passwordstr=passwordstr;

}
}

import javax.swing.*;
class TextFieldExample
{
public static void main(String args[])
{
JFrame f= new JFrame("TextField Example");
JTextField t1,t2;
t1=new JTextField("Enter your password");
t1.setBounds(50,100, 200,30);

f.add(t1);

JButton b=new JButton("Click Here");
b.setBounds(50,100,95,30);
f.add(b);

f.setSize(400,400);
f.setLayout(null);
f.setVisible(true);
}
}

Set Password
Enter your password
Submit
Invalid password: password cannot be null or an empty string
Set Password
O X
Enter your password
Submit
Your password should have at least 1 letter.

Set Password
Enter your password
Submit
Your password should have at least 1 digit.
Your password should have at least 7 alpha-numeric
characters.
Set Password
Enter your password
Submit
Congratulations! Your password is valid.

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Please someone hlep me, based on the java code given how can i make the change to program run like the example given. InvalidPasswordException.java public class InvalidPasswordException extends Exception{ public InvalidPasswordException (String errMsg){ super(errMsg);