Java 8文档日期时间教程错误 [英] Java 8 documentation Date-time tutorials mistake

问题描述

用于时间查询的Oracle教程页面显示此示例代码.

-代码

TemporalQueries query = TemporalQueries.precision();
System.out.printf("LocalDate precision is %s%n",LocalDate.now().query(query));

当我编译此段代码时，编译器将引发错误:

-错误

When I compile this segment code, the Compiler throws the error:

- Error

TemporalQueryExample.java:8: error: incompatible types: TemporalQuery<TemporalUnit> cannot be converted to TemporalQueries
    TemporalQueries query = TemporalQueries.precision();
                                                     ^
TemporalQueryExample.java:10: error: no suitable method found for query(TemporalQueries)
                      LocalDate.now().query(query));
                                     ^

我不知道这个Java 8文档教程示例是否正确，但是我复制了此代码段并粘贴了我的IDE，然后IDE抛出错误.

I don't know this java 8 documentation tutorial example is correct or not but I copy this code segment and paste my IDE then IDE throw the Error.

推荐答案

将此行TemporalQueries query = TemporalQueries.precision();更改为此TemporalQuery<TemporalUnit> query = TemporalQueries.precision();

您可以检查此Java 9 文档

You can check this Java 9 documentation

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