為什么這段代碼不是輸出234？

public static void main(String[] args) {
        int i = 0234;
        System.out.println(i);
}

"C:\Program Files\Java\jdk1.8.0_121\bin\java" "-javaagent:E:\IntelliJ IDEA 181.3870.7\lib\idea_rt.jar=51708:E:\IntelliJ IDEA 181.3870.7\bin" -Dfile.encoding=UTF-8 -classpath "C:\Program Files\Java\jdk1.8.0_121\jre\lib\charsets.jar;C:\Program Files\Java\jdk1.8.0_121\jre\lib\deploy.jar;C:\Program Files\Java\jdk1.8.0_121\jre\lib\ext\access-bridge-64.jar;C:\Program Files\Java\jdk1.8.0_121\jre\lib\ext\cldrdata.jar;C:\Program Files\Java\jdk1.8.0_121\jre\lib\ext\dnsns.jar;C:\Program Files\Java\jdk1.8.0_121\jre\lib\ext\jaccess.jar;C:\Program Files\Java\jdk1.8.0_121\jre\lib\ext\jfxrt.jar;C:\Program Files\Java\jdk1.8.0_121\jre\lib\ext\localedata.jar;C:\Program Files\Java\jdk1.8.0_121\jre\lib\ext\nashorn.jar;C:\Program Files\Java\jdk1.8.0_121\jre\lib\ext\sunec.jar;C:\Program Files\Java\jdk1.8.0_121\jre\lib\ext\sunjce_provider.jar;C:\Program Files\Java\jdk1.8.0_121\jre\lib\ext\sunmscapi.jar;C:\Program Files\Java\jdk1.8.0_121\jre\lib\ext\sunpkcs11.jar;C:\Program Files\Java\jdk1.8.0_121\jre\lib\ext\zipfs.jar;C:\Program Files\Java\jdk1.8.0_121\jre\lib\javaws.jar;C:\Program Files\Java\jdk1.8.0_121\jre\lib\jce.jar;C:\Program Files\Java\jdk1.8.0_121\jre\lib\jfr.jar;C:\Program Files\Java\jdk1.8.0_121\jre\lib\jfxswt.jar;C:\Program Files\Java\jdk1.8.0_121\jre\lib\jsse.jar;C:\Program Files\Java\jdk1.8.0_121\jre\lib\management-agent.jar;C:\Program Files\Java\jdk1.8.0_121\jre\lib\plugin.jar;C:\Program Files\Java\jdk1.8.0_121\jre\lib\resources.jar;C:\Program 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-3.4.jar;F:\mavenREP\org\antlr\stringtemplate\3.2.1\stringtemplate-3.2.1.jar;F:\mavenREP\antlr\antlr\2.7.7\antlr-2.7.7.jar;F:\mavenREP\com\google\code\gson\gson\2.8.2\gson-2.8.2.jar;F:\mavenREP\org\apache\commons\commons-math\2.2\commons-math-2.2.jar;F:\mavenREP\javax\ws\rs\jsr311-api\1.1.1\jsr311-api-1.1.1.jar;F:\mavenREP\com\netflix\servo\servo-core\0.10.1\servo-core-0.10.1.jar;F:\mavenREP\com\netflix\servo\servo-internal\0.10.1\servo-internal-0.10.1.jar;F:\mavenREP\com\sun\jersey\jersey-core\1.19.1\jersey-core-1.19.1.jar;F:\mavenREP\com\sun\jersey\jersey-client\1.19.1\jersey-client-1.19.1.jar;F:\mavenREP\com\sun\jersey\contribs\jersey-apache-client4\1.19.1\jersey-apache-client4-1.19.1.jar;F:\mavenREP\org\apache\httpcomponents\httpclient\4.5.5\httpclient-4.5.5.jar;F:\mavenREP\org\apache\httpcomponents\httpcore\4.4.9\httpcore-4.4.9.jar;F:\mavenREP\commons-codec\commons-codec\1.10\commons-codec-1.10.jar;F:\mavenREP\com\google\inject\guice\4.1.0\guice-4.1.0.jar;F:\mavenREP\aopalliance\aopalliance\1.0\aopalliance-1.0.jar;F:\mavenREP\com\sun\jersey\jersey-servlet\1.19.1\jersey-servlet-1.19.1.jar;F:\mavenREP\com\sun\jersey\jersey-server\1.19.1\jersey-server-1.19.1.jar;F:\mavenREP\com\netflix\eureka\eureka-core\1.6.2\eureka-core-1.6.2.jar;F:\mavenREP\org\codehaus\woodstox\woodstox-core-asl\4.4.1\woodstox-core-asl-4.4.1.jar;F:\mavenREP\javax\xml\stream\stax-api\1.0-2\stax-api-1.0-2.jar;F:\mavenREP\com\netflix\archaius\archaius-core\0.7.4\archaius-core-0.7.4.jar;F:\mavenREP\com\google\code\findbugs\jsr305\3.0.1\jsr305-3.0.1.jar;F:\mavenREP\javax\inject\javax.inject\1\javax.inject-1.jar;F:\mavenREP\com\fasterxml\jackson\dataformat\jackson-dataformat-xml\2.8.10\jackson-dataformat-xml-2.8.10.jar;F:\mavenREP\com\fasterxml\jackson\module\jackson-module-jaxb-annotations\2.8.10\jackson-module-jaxb-annotations-2.8.10.jar;F:\mavenREP\org\codehaus\woodstox\stax2-api\3.1.4\stax2-api-3.1.4.jar;F:\mavenREP\com\fasterxml\woodstox\woodstox-core\5.0.3\woodstox-core-5.0.3.jar;F:\mavenREP\com\thoughtworks\xstream\xstream\1.4.9\xstream-1.4.9.jar;F:\mavenREP\xmlpull\xmlpull\1.1.3.1\xmlpull-1.1.3.1.jar;F:\mavenREP\xpp3\xpp3_min\1.1.4c\xpp3_min-1.1.4c.jar;F:\mavenREP\org\springframework\cloud\spring-cloud-starter-archaius\1.3.1.RELEASE\spring-cloud-starter-archaius-1.3.1.RELEASE.jar;F:\mavenREP\commons-configuration\commons-configuration\1.8\commons-configuration-1.8.jar;F:\mavenREP\commons-lang\commons-lang\2.6\commons-lang-2.6.jar;F:\mavenREP\com\fasterxml\jackson\core\jackson-annotations\2.8.0\jackson-annotations-2.8.0.jar;F:\mavenREP\com\fasterxml\jackson\core\jackson-core\2.8.10\jackson-core-2.8.10.jar;F:\mavenREP\com\fasterxml\jackson\core\jackson-databind\2.8.10\jackson-databind-2.8.10.jar;F:\mavenREP\com\google\guava\guava\18.0\guava-18.0.jar;F:\mavenREP\org\springframework\cloud\spring-cloud-starter-ribbon\1.3.1.RELEASE\spring-cloud-starter-ribbon-1.3.1.RELEASE.jar;F:\mavenREP\com\netflix\ribbon\ribbon\2.2.2\ribbon-2.2.2.jar;F:\mavenREP\com\netflix\ribbon\ribbon-transport\2.2.2\ribbon-transport-2.2.2.jar;F:\mavenREP\io\reactivex\rxnetty-contexts\0.4.9\rxnetty-contexts-0.4.9.jar;F:\mavenREP\io\reactivex\rxnetty-servo\0.4.9\rxnetty-servo-0.4.9.jar;F:\mavenREP\com\netflix\hystrix\hystrix-core\1.5.12\hystrix-core-1.5.12.jar;F:\mavenREP\org\hdrhistogram\HdrHistogram\2.1.9\HdrHistogram-2.1.9.jar;F:\mavenREP\io\reactivex\rxnetty\0.4.9\rxnetty-0.4.9.jar;F:\mavenREP\io\netty\netty-codec-http\4.0.27.Final\netty-codec-http-4.0.27.Final.jar;F:\mavenREP\io\netty\netty-codec\4.0.27.Final\netty-codec-4.0.27.Final.jar;F:\mavenREP\io\netty\netty-handler\4.0.27.Final\netty-handler-4.0.27.Final.jar;F:\mavenREP\io\netty\netty-transport-native-epoll\4.0.27.Final\netty-transport-native-epoll-4.0.27.Final.jar;F:\mavenREP\io\netty\netty-common\4.0.27.Final\netty-common-4.0.27.Final.jar;F:\mavenREP\io\netty\netty-buffer\4.0.27.Final\netty-buffer-4.0.27.Final.jar;F:\mavenREP\io\netty\netty-transport\4.0.27.Final\netty-transport-4.0.27.Final.jar;F:\mavenREP\com\netflix\ribbon\ribbon-core\2.2.2\ribbon-core-2.2.2.jar;F:\mavenREP\com\netflix\ribbon\ribbon-httpclient\2.2.2\ribbon-httpclient-2.2.2.jar;F:\mavenREP\commons-collections\commons-collections\3.2.2\commons-collections-3.2.2.jar;F:\mavenREP\com\netflix\netflix-commons\netflix-commons-util\0.1.1\netflix-commons-util-0.1.1.jar;F:\mavenREP\com\netflix\ribbon\ribbon-loadbalancer\2.2.2\ribbon-loadbalancer-2.2.2.jar;F:\mavenREP\com\netflix\netflix-commons\netflix-statistics\0.1.1\netflix-statistics-0.1.1.jar;F:\mavenREP\io\reactivex\rxjava\1.1.10\rxjava-1.1.10.jar;F:\mavenREP\com\netflix\ribbon\ribbon-eureka\2.2.2\ribbon-eureka-2.2.2.jar" com.example.eureka.Test
156

Process finished with exit code 0