Error when building the Java pricing userexit manual code

Question

I went throught the manual for the pricing userexit manual... it tells you to ignore the errors when you do an ant build but I want to remove all the errors since they dont let the rest the code compile.... where are the jars for these errors: 
[javadoc] C:\DEV\PRC_UE_CUSTOMER\lib_src\src\com\sap\spc\document\DocumentConstants.java:16: package com.sap.vmc.logging does not exist
     [javadoc] import com.sap.vmc.logging.Category;
     [javadoc]                            ^
     [javadoc] C:\DEV\PRC_UE_CUSTOMER\lib_src\src\com\sap\spc\document\DocumentConstants.java:26: cannot resolve symbol
     [javadoc] symbol  : class Category
     [javadoc] location: class com.sap.spc.document.DocumentConstants
     [javadoc]     public static final Category CATEGORY = Category.getCategory(Category.APPLICATIONS, "/AP/SPC/Document");
     [javadoc]                         ^

Answer 1

See the [SAP note 809820 - Userexit concept for pricing|https://service.sap.com/sap/support/notes/809820]
Use ZIP file the attached to the above note - PRC_UE_CUSTOMER_V105.zip
ZIP file contains an Eclipse .project file that has the required build path. If you read the documents carefully, it does refer this project file.
<?xml version="1.0" encoding="UTF-8"?>
<classpath>
     <classpathentry kind="src" path="src"/>
     <classpathentry sourcepath="lib_src/src" kind="lib" path="lib_api"/>
     <classpathentry kind="lib" path="lib_vmc_api/base_services_stripped_api.jar"/>
     <classpathentry kind="output" path="bin"/>
</classpath>
Again read the documents thoroughly. They are neither fictions nor non-fictions, but technical documents written with care. So, we must also read them with care. If we don't follow them, then it is time to engage someone who does. )
BTW, coming back to the Java basics - One must have a class and source files to debug. You won't get a class file unless it is compiled. The Java file won't compile correctly if it has syntax / reference errors. Unfortunately or fortunately, all these apply to the IPC java userexit development as well.
Easwar Ram