### Question:
EnvUtil { public static void setValue(String value) { ReflectionUtil.setStaticValue(VALUE_FIELD, value); } protected  EnvUtil(); static String getValue(); static void setValue(String value); static char DELIMITER; }### Answer:
@Test public void testSetValue() throws Exception { EnvUtil.setValue("aaa"); assertEquals("aaa", Env.getValue()); EnvUtil.setValue("bbb"); assertEquals("bbb", Env.getValue()); }