which library contains assert that object matcher code example

Example 1: error: The method assertThat(T, Matcher) in the type MatcherAssert is not applicable for the arguments (List, Matcher>)

// JUnit 4 for equals check
assertEquals(expected, actual);
// Hamcrest for equals check
assertThat(actual, is(equalTo(expected)));

// JUnit 4 for not equals check
assertNotEquals(expected, actual)
// Hamcrest for not equals check
assertThat(actual, is(not(equalTo(expected))));

Example 2: error: The method assertThat(T, Matcher) in the type MatcherAssert is not applicable for the arguments (List, Matcher>)

import static org.hamcrest.MatcherAssert.assertThat;
import static org.hamcrest.Matchers.is;
import static org.hamcrest.Matchers.equalTo;

boolean a;
boolean b;

// all statements test the same
assertThat(a, equalTo(b));
assertThat(a, is(equalTo(b)));
assertThat(a, is(b));