当我们大部分Javaer还沉浸在Java 8 的特性中时,Java 19 预计在2022年9月20号发布,现在半年发布一次的节奏真让人应接不暇,况且Spring Boot 3.0开始最低版本为Java 17,Spring Security、KafKa等也都宣布在后期版本最低需要Java 17 ,所以我们恶补一下Java 8-18的特性很有必要。 Java 8 新特性 Java 8 带来了大...
"july", "august" -> "夏天"; case "september", "october", "november" -> "秋天"; case "december", "january", "february" -> "冬天"; default -> { //throw new RuntimeException("day error") System.out.println("day error"); break "day error"; }};System.out.println("当前...
Other Notes: Removal of JavaFX from Oracle JDK 8 As announced in 2020, support for JavaFX on JDK 8, the last commercially supported version of JavaFX from Oracle, ended in March 2025. JDK 8 update 451 is the first upgrade of JDK/JRE 8 without JavaFX. Oracle continues to develop and rele...
log.error("file is not found[{}]", e); } return context; } /** * . * 执行groovy脚本 * * @param script */ public void execGroovy(String script) { try { Runnable runnable = GroovyUtils.instanceTaskGroovyScript(script);//获取实例对象 runnable.run();//调用脚本方法 } catch (Exception...
6744401 client-libs java.awt Consider removal of code disabling JIT in Toolkit.getDefaultToolkit 6788138 client-libs java.awt leak in Java_sun_awt_X11_XlibWrapper_getStringBytes? 7124255 client-libs java.awt [macosx] java.awt.List: method select(int) doesn't work before be visible ...
Java 9 中注解增加了两个新元素:since 和forRemoval。 since: 元素指定已注解的API元素已被弃用的版本。 forRemoval: 元素表示注解的 API 元素在将来的版本中被删除,应该迁移 API。 以下实例为 Java 9 中关于 Boolean 类的说明文档,文档中 @Deprecated 注解使用了 since 属性:Boolean Class。 JavaDoc 关于 Boolean...
Python 使用Pandas运行df = pd.DataFrame(df).append(new_row, ignore_index=True)代码,报错:AttributeError: 'DataFrame' object has no attribute 'append',本文主要介绍一下报错原因及解决方法。 1、报错原因 参考文档:https://pandas.pydata.org/docs/whatsnew/v2.0.0.html#removal-of-prior-version-deprecat...
MongoDB中的集合查询(获取一组文档中某个字段的不同值列表) 运用方法:DBCollection对象方法中的 distinct() 语句: 语句结构:distinct(key,[query]) key字符串,指定获取哪个字段的不同值;query:包含标准查询选项的对象,指定了要从哪个文档中获取不同的字段值 ...
⢠removal: Warns about the use of an API that has been marked for removal. ⢠requires-automatic: Warns developers about the use of automatic modules in requires clauses. ⢠requires-transitive-automatic: Warns about automatic modules in requires transitive. â...
public static final String RELATION_MBEAN_REMOVAL "jmx.relation.removal.mbean" public static final String RELATION_MBEAN_UPDATE "jmx.relation.update.mbean"javax.management.relation.RoleInfo public static final int ROLE_CARDINALITY_INFINITY -1javax.management.relation.RoleStatus public static final int...