JUnit:如何将我的所有方法公开以便进行测试

import org.junit.Test;
import static org.junit.Assert.assertEquals;

public class MyClassTest {
    
    @Test
    public void testAddition() {
        MyClass myClass = new MyClass();
        int result = myClass.add(2, 3);
        assertEquals(5, result);
    }
    
    @Test
    public void testSubtraction() {
        MyClass myClass = new MyClass();
        int result = myClass.subtract(5, 2);
        assertEquals(3, result);
    }
}