Password Check (Case Sensitive)

CODE :  

import java.lang.*;

import java.util.*;

import java.util.regex.*;

class CheckPass{

public static String check(String password){

    Scanner a = new Scanner(System.in);

String check;

int x=0;

Pattern sc = Pattern.compile("[^A-Za-z0-9 ]");

        Matcher m1 = sc.matcher(password);

Pattern uc = Pattern.compile("[A-Z]");

        Matcher m2 = uc.matcher(password);

Pattern lc = Pattern.compile("[a-z]");

        Matcher m3 = lc.matcher(password);

Pattern dc = Pattern.compile("[0-9]");

        Matcher m4 = dc.matcher(password);

if(password.length()>=8)

{

x=1;}

if(m1.find() && m2.find() && m3.find() && m4.find() && x==1)

{

check=password;

}

else

{ System.out.println("Password should must contain");

  System.out.println("1.a Uppercase Letter");

  System.out.println("2.a Lowercase Letter");

  System.out.println("3.a Numerical value");

  System.out.println("4.a Special character");

  System.out.println("5.Password Must contain 8 letters");

  System.out.print("Please enter Password : ");

      String newpassword=a.next();

  check=check(newpassword);

} return check;

}

public static void main(String args[]){

Scanner sc = new Scanner(System.in);

System.out.print("Please Enter the Password : ");

String Password = sc.next();

Password = check(Password);

System.out.println("Password Saved Successfully");

System.out.println("The Saved Password is :"+Password);

}}

Inputs and Outputs :