Maven can't compile class which depends on rt.jar

Question

CI-server (Hudson), for which I am responsible, builds Maven project. After the last commit, the build failed:

[INFO] -------------------------------------------         


        

Answer 1

The missing class seems to be JRE internal (as indicated in its namespace), and should not be referenced from your code. It is probably only available on specific platforms or JRE versions.

Consider replacing it with another Base64 encoder class, e.g. one from the Apache Commmons Codec project.

Java 8 update

Java 8 finally introduced a Base64 class in the public part of the JDK: java.util.Base64.

Answer 2

Need to specify -XDignore.symbol.file and add rt.jar dependency and <fork>true</fork> as the compiler plugin will otherwise silently drop any -XD flags: e.g.

    ...
    <dependency>
        <groupId>groupid</groupId>
        <artifactId>artifiactId</artifactId>
        <version>1.0</version>
        <scope>system</scope>
        <systemPath>${java.home}/lib/rt.jar</systemPath>
    </dependency>
</dependencies>

<build>
    <plugins>
        <plugin>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-compiler-plugin</artifactId>
            <version>3.3</version>
            <configuration>
                <source>1.7</source>
                <target>1.7</target>
                <compilerArgs>
                    <arg>-XDignore.symbol.file</arg>
                </compilerArgs>
                <fork>true</fork>
            </configuration>
            ...