Java 1.8 ASM modified code throws NoSuchFieldError

private Launch() {
    URLClassLoader ucl = (URLClassLoader)this.getClass().getClassLoader();
    classLoader = new LaunchClassLoader(ucl.getURLs());
    blackboard = new HashMap();
    Thread.currentThread().setContextClassLoader(classLoader);
}

private Launch() {
    URLClassLoader ucl = (URLClassLoader)this.getClass().getClassLoader();
    classLoader = new LaunchClassLoader(ucl.getURLs());
    blackboard = new HashMap();
    Thread.currentThread().setContextClassLoader(classLoader);
}

private Launch() {
    URLClassLoader ucl = (URLClassLoader)this.getClass().getClassLoader();
    classLoader = new CustomLaunchClassLoader(ucl.getURLs());
    blackboard = new HashMap();
    Thread.currentThread().setContextClassLoader(classLoader);
}

private Launch() {
    URLClassLoader ucl = (URLClassLoader)this.getClass().getClassLoader();
    classLoader = new CustomLaunchClassLoader(ucl.getURLs());
    blackboard = new HashMap();
    Thread.currentThread().setContextClassLoader(classLoader);
}