Constructor Detail

• JavaAgent

  public JavaAgent()

Method Detail

• stop

  public static void stop()

• premain

  public static void premain(String agentArgs,
                             Instrumentation instrumentation)

  The premain method started at JVM startup. When this class is specified as Premain-Class in the manifest and the JVM is started with the option -javaagent:/path/to/ij1-patcher.jar then this method is called some time before the main method of the main class is called.

  Parameters:

  agentArgs - the optional argument passed via -javaagent:ij1-patcher.jar=ARGUMENT

  instrumentation - the Instrumentation instance passed by the JVM

• transform

  public byte[] transform(ClassLoader loader,
                          String className,
                          Class<?> classBeingRedefined,
                          ProtectionDomain protectionDomain,
                          byte[] classfileBuffer)
                   throws IllegalClassFormatException

  Specified by:

  transform in interface ClassFileTransformer

  Throws:

  IllegalClassFormatException

• dontCall

  public static void dontCall(int i)

• main

  public static void main(String... args)
                   throws IOException

  Writes out a minimal java agent .jar file.

  When trying to debug class loading issues in ij1-patcher itself, of course we cannot load the complete ij1-patcher.jar as a Java Agent (otherwise it would hide the classes that we want to test with possibly out-dated ones).

  This main method can be used to generate a minimal .jar file for use with -javaagent that contains only the LegacyJavaAgent class.

  Parameters:

  args - the command-line arguments (the first one, if specified, refers to the output file name)

  Throws:

  IOException