????public String toString() {
????final StringBuilder sb = new StringBuilder("MyObject{");
????sb.append("att1='").append(att1).append(''');
????sb.append("?? att2='").append(att2).append(''');
????sb.append("?? att3='").append(att3).append(''');
????sb.append(super.toString());
????return sb.toString();
????}
????// Average performance with JMH (ops/s)
????// (min?? avg?? max) = (96073??645?? 141463??438?? 146205??910)
????// ???JMH??????????????
????// (С?? ????? ??) = (96073??645?? 141463??438?? 146205??910)
????Guava
????Guava???Щhelper??????????????????????toString??????JDK API???????????????????????????Щ?????????????????Guava????
????public String toString() {
????return Objects.toStringHelper(this)
????.add("att1"?? att1)
????.add("att2"?? att2)
????.add("att3"?? att3)
????.add("super"?? super.toString()).toString();
????}
????// Average performance with JMH (ops/s)
????// (min?? avg?? max) = (97049??043?? 110111??808?? 114878??137)
????// ???JMH??????????????
????// (С?? ????? ??) = (97049??043?? 110111??808?? 114878??137)
????Commons Lang3
????Commons Lang3???Щ??????????toString????builder?? introspector???????2????introspection??????????????????????????????????
????public String toString() {
????return new ToStringBuilder(this)
????.append("att1"?? att1)
????.append("att2"?? att2)
????.append("att3"?? att3)
????.append("super"?? super.toString()).toString();
????}
????// Average performance with JMH (ops/s)
????// (min?? avg?? max) = ( 73510??509??  75165??552??  76406??370)
????// ???JMH??????????????
????// (С?? ????? ??) = ( 73510??509??  75165??552??  76406??370)
????public String toString() {
????return ToStringBuilder.reflectionToString(this?? ToStringStyle.SHORT_PREFIX_STYLE);
????}
????// Average performance with JMH (ops/s)
????// (min?? avg?? max) = (31803??224?? 34930??630?? 35581??488)
????// ???JMH??????????????
????// (С?? ????? ??) =(31803??224?? 34930??630?? 35581??488)
????public String toString() {
????return ReflectionToStringBuilder.toString(this);
????}
????// Average performance with JMH (ops/s)
????// (min?? avg?? max) = (14172??485?? 23204??479?? 30754??901)
????// ???JMH??????????????
????// (С?? ????? ??) = (14172??485?? 23204??479?? 30754??901)
???????
???????????JVM?????????????????+??????????????????Objects.toString??????null?????????????JDK????ù?????????????????????null????????????н????????????????????伴???JDK??и????????????????????????/?????????????????????????????
?????????????????????JMH?????????????????????Ч???ε????
?????????Σ????????????toString??????????????????????????治??????