diamond operator is not supported in -source 1.5
代码中 会让补全,否则会报 diamond operator is not supported in -source 1.5
SRE实战 互联网时代守护先锋,助力企业售后服务体系运筹帷幄!一键直达领取阿里云限量特价优惠。需要在POM中指定 source 版本号
<plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-compiler-plugin</artifactId> <configuration> <source>1.7</source> <target>1.7</target> <encoding>UTF-8</encoding> </configuration> </plugin>

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