據說Java無論OS如何都是可移植的。但這裏是我的疑問: 爲什麼java提示在Windows中完美工作,但在我的情況下,無法執行java提示。在Windows上工作但不在Ubuntu上的Java提示符
我的文件夾結構如下:
c: --|temp -----|JavaSDKv2 --------|com -----------|impinj --------------|octanesdk -----------------|samples --------------------|(.java files) --------------------|(.class files) --------|OctaneSDKJava-1.20.2.240-jar-with-dependencies.jar
實施例: (在Windows 8,在cmd)
C:\temp>cd JavaSDKv2 C:\temp\JavaSDKv2>javac com\impinj\octanesdk\samples\*.java -classpath OctaneSDK Java-1.20.2.240-jar-with-dependencies.jar C:\temp\JavaSDKv2>
(因此沒有定義的錯誤,並用一類每個Java文件具有現在是.java文件中定義的每個類的.class文件)
C:\temp\JavaSDKv2>java -Dhostname=192.168.2.203 -classpath OctaneSDKJava-1.20.2. 240-jar-with-dependencies.jar;. com.impinj.octanesdk.samples.RfDoppler Connecting to 192.168.2.203 log4j:WARN No appenders could be found for logger (org.apache.mina.filter.execut or.ExecutorFilter). log4j:WARN Please initialize the log4j system properly. Press Enter to exit. EPC: 0100 0000 0000 9950 0000 0000 Reader_ip: 192.168.2.203 doppler: .5625 EPC: 0100 0000 0000 9950 0000 0000 Reader_ip: 192.168.2.203 doppler: 3.0 EPC: 0100 0000 0000 9950 0000 0000 Reader_ip: 192.168.2.203 doppler: -6.6875
(a nd這個沒有任何問題)
然後我使用Ubuntu(在虛擬盒)。我檢查連接。
[email protected]:~/temp/JavaSDKv2$ ping 192.168.2.203 PING 192.168.2.203 (192.168.2.203) 56(84) bytes of data. 64 bytes from 192.168.2.203: icmp_seq=1 ttl=63 time=2.56 ms 64 bytes from 192.168.2.203: icmp_seq=2 ttl=63 time=1.64 ms 64 bytes from 192.168.2.203: icmp_seq=3 ttl=63 time=1.56 ms 64 bytes from 192.168.2.203: icmp_seq=4 ttl=63 time=1.34 ms 64 bytes from 192.168.2.203: icmp_seq=5 ttl=63 time=1.60 ms
我確認Java版本(Java的版本)
[email protected]:~/temp/JavaSDKv2$ java -version java version "1.7.0_79" OpenJDK Runtime Environment (IcedTea 2.5.6) (7u79-2.5.6-0ubuntu1.14.04.1) OpenJDK Client VM (build 24.79-b02, mixed mode, sharing)
[email protected]:~/temp/JavaSDKv2$ javac com/impinj/octanesdk/samples/*.java -classpath OctaneSDKJava-1.20.2.240-jar-with-dependencies.jar [email protected]:~/temp/JavaSDKv2$
(這創建.class文件)
[email protected]:~/temp/JavaSDKv2$ java -Dhostname=192.168.2.203 -classpath OctaneSDKJava-1.20.2.240-jar-with-dependencies.jar com.impinj.octanesdk.samples.RfDoppler Error: Could not find or load main class com.impinj.octanesdk.samples.RfDoppler [email protected]:~/temp/JavaSDKv2$
奇怪的Java沒有找到任何類型的.class文件。 我的猜測是與包相關的東西。 當然,如果有人編寫helloworld.java代碼並執行helloworld.class,您會看到「Hello,World!」
謝謝工程.... –