Eclipse:无法解析导入的javacard

Question

我是eclipse的新手，我需要开发一个Javacard应用程序。我得到了eclipse neon和JDK8 +Java卡开发工具包。我已经完成了所有的教程安装，直到这个页面(包括) https://docs.oracle.com/javacard/3.0.5/guide/eclipse_java_card_plug-in.htm#JCUGC127，但是当我从javacard目录导入一个项目示例时，它告诉我(例如，Hello World one)：

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

我在其他项目中也得到了类似的结果。我尝试了一些“解决方案”，比如清理项目等等，但是没有人解决这个问题。我会感谢一些关于可能发生的事情和我必须做的事情的提示。

提前谢谢。

Answer 1

将lib添加到项目"Java build path“中；库" api_xxx.jar”位于JCKit_Dir/api_xxx.jar/。