import org.jetbrains.annotations.Nullable; public class Test { public String notNullString(int p) { return "response"; } private String notNullInitializerField = notNullString(3); public String notNullInitializerPublicField = notNullString(3); public void testProperty() { notNullInitializerField.charAt(0); notNullInitializerPublicField.charAt(0); } public void testLocalVariable() { String notNullInitializerVal = notNullString(3); notNullInitializerVal.charAt(0); } }