Eclipse：無法解析導入的Javacard

Question

我對Eclipse比較陌生，需要開發Javacard Application。 我得到了Eclipse Neon和JDK8 + Java卡開發套件。 我已經完成了所有教程的安裝，直到此頁面（包括） https://docs.oracle.com/javacard/3.0.5/guide/eclipse_java_card_plug-in.htm#JCUGC127，但是當我從javacard目錄導入項目示例時它告訴我（例如，對於Hello World）：

APDU cannot be resolved to a type   
HelloWorld.java /HelloWorld/applet/src/com/sun/jcclassic/samples/helloworld line 65 Java Problem
Applet cannot be resolved to a type HelloWorld.java /HelloWorld/applet/src/com/sun/jcclassic/samples/helloworld line 29 Java Problem
ISO7816 cannot be resolved to a variable    HelloWorld.java /HelloWorld/applet/src/com/sun/jcclassic/samples/helloworld line 69 Java Problem
ISO7816 cannot be resolved to a variable    HelloWorld.java /HelloWorld/applet/src/com/sun/jcclassic/samples/helloworld line 70 Java Problem
ISO7816 cannot be resolved to a variable    HelloWorld.java /HelloWorld/applet/src/com/sun/jcclassic/samples/helloworld line 78 Java Problem
ISO7816 cannot be resolved to a variable    HelloWorld.java /HelloWorld/applet/src/com/sun/jcclassic/samples/helloworld line 80 Java Problem
The import javacard cannot be resolved  HelloWorld.java /HelloWorld/applet/src/com/sun/jcclassic/samples/helloworld line 20 Java Problem
The import javacard cannot be resolved  HelloWorld.java /HelloWorld/applet/src/com/sun/jcclassic/samples/helloworld line 21 Java Problem
The import javacard cannot be resolved  HelloWorld.java /HelloWorld/applet/src/com/sun/jcclassic/samples/helloworld line 22 Java Problem
The import javacard cannot be resolved  HelloWorld.java /HelloWorld/applet/src/com/sun/jcclassic/samples/helloworld line 23 Java Problem
The import javacard cannot be resolved  HelloWorld.java /HelloWorld/applet/src/com/sun/jcclassic/samples/helloworld line 24 Java Problem
The method register() is undefined for the type HelloWorld  HelloWorld.java /HelloWorld/applet/src/com/sun/jcclassic/samples/helloworld line 38 Java Problem
Util cannot be resolved HelloWorld.java /HelloWorld/applet/src/com/sun/jcclassic/samples/helloworld line 78 Java Problem

我在其他項目中也得到了類似的輸出。 我用谷歌搜索了一些“解決方案”，例如清理項目等，但是沒有人解決這個問題。 我希望了解一些可能發生的事情以及必須采取的措施。

提前致謝。

Answer 1

將api_xxx.jar添加到您的項目“ Java構建路徑”中； 庫“ api_xxx.jar”位於JCKit_Dir / lib /。