Hi Friend,

Try the following code:

import java.util.*;
import java.util.regex.*;
class RegularExpressions{

public static boolean validateName( String name ) {
return name.matches( "\\p{Upper}(\\p{Lower}+\\s?)" );
}
public static boolean validateAddress( String address )
{
return address.matches( "\\d+\\s+([a-zA-Z]+|[a-zA-Z]+\\s[a-zA-Z]+)" );

}
public static boolean validatePhone( String phone )
{
return phone.matches( "^\\(?(\\d{3})\\)?[- ]?(\\d{3})[- ]?(\\d{6})$" );
}
public static boolean isEmailValid(String email){
boolean isValid = false;
String expression = "^[\\w\\.-]+@([\\w\\-]+\\.)+[A-Z]{2,4}$";
CharSequence inputStr = email;
Pattern pattern = Pattern.compile(expression,Pattern.CASE_INSENSITIVE);
Matcher matcher = pattern.matcher(inputStr);
if(matcher.matches()){
isValid = true;
}
return isValid;
}


public static void main(String[] args){
Scanner input=new Scanner(System.in);
System.out.print("Enter Name: ");
String name=input.nextLine();
while(validateName(name)!=true){
System.out.print("Invalid Name!");
System.out.println();
System.out.print("Enter Name: ");
name=input.nextLine();
}

System.out.print("Enter Phone Number: ");
String phone=input.nextLine();
while(validatePhone(phone)!=true){
System.out.print("Invalid PhoneNumber!");
System.out.println();
System.out.print("Enter Phone Number: ");
phone=input.nextLine();
}

System.out.print("Enter Address: ");
String address=input.nextLine();
while(validateAddress(address)!=true){
System.out.print("Invalid Address!");
System.out.println();
System.out.print("Enter Address: ");
address=input.nextLine();
}

System.out.print("Enter EmailId: ");
String email=input.nextLine();
while(isEmailValid(email)!=true){
System.out.print("Invalid Email!");
System.out.println();
System.out.print("Enter EmailID: ");
email=input.nextLine();
}

}
}

Thanks