intellij idea - Java. method put isn't visible when add value to map. The IDE shows "Cannot resolve symbol 'put'" error

Question

I'm working with selenium webdriver using java 11 as a programming language. I want to create map collection but face with a "Cannot resolve symbol 'put'" error.

import org.junit.After;
import org.junit.Before;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.firefox.FirefoxDriver;

import java.util.HashMap;
import java.util.HashSet;
import java.util.Map;
import java.util.Set;
import java.util.concurrent.TimeUnit;

public class BaseTest {
    protected WebDriver driver;
    private Map<String, String> userName = new HashMap<String, String>();
    private Map<String, String> userPassword = new HashMap<>();

    userName.put("GA", "");

The put on the last line is red I tried to import class using hotkey alt+enter. Nothing happened, also created a new project to check this issue method put the method has worked well.

question from:https://stackoverflow.com/questions/65919059/java-method-put-isnt-visible-when-add-value-to-map-the-ide-shows-cannot-reso

Answer 1

Waitting for answers