[FIXED] How can I get TextField input by using ArrayList

Issue

I need to test a method that takes an input TextFild, how can I change the input to ArrayList to get the data. I am getting an error that says

java.lang.ClassCastException: class java.lang.Character cannot be cast to class

    private boolean validatePassword() {
            Pattern p = Pattern.compile("((?=.*\\d)(?=.*[a-z])(?=.*[A-Z]).{8,15})");
            Matcher matcher = p.matcher(passwordField.getText());
            if (matcher.matches()) {
                return true;

            } else {
                lblMessage.setText("Please enter a valid password \n" +
                        "(at least one uppercase, lowercase and 8 or more characters ");
                return false;

            }
        }

my solution

    public class TestCases {
        ArrayList<Character> characters = new ArrayList<>();

        public boolean validatePassword() {

            Pattern p = Pattern.compile("((?=.*\\d)(?=.*[a-z])(?=.*[A-Z]).{8,15})");
            for (int i = 0; i < characters.size(); i++) {
                Object j = characters.get(i);
                Matcher matcher = p.matcher((CharSequence) j);
                if (matcher.matches()) {
                    return true;

                } else {
                    System.out.println(
                            "Please enter a valid password \n" +
                            "(at least one uppercase, lowercase and 8 or more characters "););
                    return false;

                }
            }

            return false;
        }

        public void setEmail(ArrayList<Character> list) {
            characters = list;
        }

    }

Junit class

    @Test
    void test() {
        String password= "Kd123456";
        ArrayList<Character> paswordField=new ArrayList<>();
        for(int i= 0 ; i<password.length(); i++){
            paswordField.add(password.charAt(i));
        }

        TestCases valid= new TestCases();
        valid.setEmail(paswordField);
        assertEquals(true,valid.validatePassword());
    }

}

Solution

if hope this will help you !!

 import static org.junit.Assert.assertEquals;

import java.util.regex.Matcher;
import java.util.regex.Pattern;

import org.junit.Test;

public class TestCases {

    public boolean validatePassword(String s) {

        Pattern p = Pattern.compile("((?=.*\\d)(?=.*[a-z])(?=.*[A-Z])(?=.*[^a-z0-9 ]).{8,15})",
                Pattern.CASE_INSENSITIVE);

        Matcher matcher = p.matcher(s);
        if (matcher.matches()) {
            return true;

        } else {
            System.out.println("Please enter a valid password \n"
                    + "(at least one uppercase, lowercase and 8 or more characters ");
            return false;

        }

    }

    @Test
    public void test() {
        String password = "Kd12@3456";

        TestCases valid = new TestCases();

        assertEquals(true, valid.validatePassword(password));
    }

}

Answered By - rahul sharma