Write the Java source code necessary to build a solution for EITHER of the following problem:
Program A
(Check password) Some websites impose certain rules for passwords. Write a method that
checks whether a string is a valid password. Suppose the password rules are as follows:
A password must have at least eight characters.
A password consists of only letters and digits.
A password must contain at least two digits.
Write a program that prompts the user to enter a password and displays Valid Password if the
rules are followed or Invalid Password otherwise.
Program B
(Count the letters in a string ) Write a method that counts the number of letters in a string using
the following header:
public static int countLetters(String s)
Write a test program that prompts the user to enter a string and displays the number of letters in
the string , not counting numbers, spaces, or symbols.
Solution
Program A:
import java.util.Scanner;
class PasswordValidity
{
public static void main(String[] args)
{
Scanner scanner = new Scanner(System.in);
boolean size;
boolean special;
boolean digit;
int count = 0;
System.out.println(\"Enter password:\");
String password = scanner.nextLine();
size = false;
special = false;
digit = false;
int length = password.length();
count=0;
int digitLen=0;
while (count < length) {
char ch = password.charAt(count);
if (length >= 8) {
size = true;
}
if (!Character.isLetterOrDigit(ch)) {
special = true;
}
if (Character.isDigit(ch)) {
digitLen++;
digit = true;
}
count++;
}
if (size && !special && digit && digitLen>=2) {
System.out.println(\" Valid Password\");
} else {
System.out.println(\"Invalid Password\");
}
}
}
Program B:
import java.util.Scanner;
class LetterCount
{
public static void main(String[] args)
{
Scanner scanner = new Scanner(System.in);
//String str;
System.out.println(\"Enter String:\");
String str= scanner.nextLine();
int res=countLetters(str);
System.out.println(\"Count: \"+res);
}
public static int countLetters(String s)
{
int length=s.length();
int count=0,c=0;
while(count.
Write the Java source code necessary to build a solution for EITHER .pdf
1. Write the Java source code necessary to build a solution for EITHER of the following problem:
Program A
(Check password) Some websites impose certain rules for passwords. Write a method that
checks whether a string is a valid password. Suppose the password rules are as follows:
A password must have at least eight characters.
A password consists of only letters and digits.
A password must contain at least two digits.
Write a program that prompts the user to enter a password and displays Valid Password if the
rules are followed or Invalid Password otherwise.
Program B
(Count the letters in a string ) Write a method that counts the number of letters in a string using
the following header:
public static int countLetters(String s)
Write a test program that prompts the user to enter a string and displays the number of letters in
the string , not counting numbers, spaces, or symbols.
Solution
Program A:
import java.util.Scanner;
class PasswordValidity
{
public static void main(String[] args)
{
Scanner scanner = new Scanner(System.in);
boolean size;
boolean special;
boolean digit;
int count = 0;
System.out.println("Enter password:");
String password = scanner.nextLine();
size = false;
special = false;
digit = false;
int length = password.length();
2. count=0;
int digitLen=0;
while (count < length) {
char ch = password.charAt(count);
if (length >= 8) {
size = true;
}
if (!Character.isLetterOrDigit(ch)) {
special = true;
}
if (Character.isDigit(ch)) {
digitLen++;
digit = true;
}
count++;
}
if (size && !special && digit && digitLen>=2) {
System.out.println(" Valid Password");
} else {
System.out.println("Invalid Password");
}
}
}
Program B:
import java.util.Scanner;
class LetterCount
{
public static void main(String[] args)
{
Scanner scanner = new Scanner(System.in);
//String str;
System.out.println("Enter String:");
String str= scanner.nextLine();
int res=countLetters(str);
System.out.println("Count: "+res);
}
3. public static int countLetters(String s)
{
int length=s.length();
int count=0,c=0;
while(count
![Write the Java source code necessary to build a solution for EITHER of the following problem:
Program A
(Check password) Some websites impose certain rules for passwords. Write a method that
checks whether a string is a valid password. Suppose the password rules are as follows:
A password must have at least eight characters.
A password consists of only letters and digits.
A password must contain at least two digits.
Write a program that prompts the user to enter a password and displays Valid Password if the
rules are followed or Invalid Password otherwise.
Program B
(Count the letters in a string ) Write a method that counts the number of letters in a string using
the following header:
public static int countLetters(String s)
Write a test program that prompts the user to enter a string and displays the number of letters in
the string , not counting numbers, spaces, or symbols.
Solution
Program A:
import java.util.Scanner;
class PasswordValidity
{
public static void main(String[] args)
{
Scanner scanner = new Scanner(System.in);
boolean size;
boolean special;
boolean digit;
int count = 0;
System.out.println("Enter password:");
String password = scanner.nextLine();
size = false;
special = false;
digit = false;
int length = password.length();](https://image.slidesharecdn.com/writethejavasourcecodenecessarytobuildasolutionforeither-230705092011-40712aa7/85/Write-the-Java-source-code-necessary-to-build-a-solution-for-EITHER-pdf-1-320.jpg)
![count=0;
int digitLen=0;
while (count < length) {
char ch = password.charAt(count);
if (length >= 8) {
size = true;
}
if (!Character.isLetterOrDigit(ch)) {
special = true;
}
if (Character.isDigit(ch)) {
digitLen++;
digit = true;
}
count++;
}
if (size && !special && digit && digitLen>=2) {
System.out.println(" Valid Password");
} else {
System.out.println("Invalid Password");
}
}
}
Program B:
import java.util.Scanner;
class LetterCount
{
public static void main(String[] args)
{
Scanner scanner = new Scanner(System.in);
//String str;
System.out.println("Enter String:");
String str= scanner.nextLine();
int res=countLetters(str);
System.out.println("Count: "+res);
}](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)