import com.sun.org.apache.xml.internal.resolver.helpers.Debug; //导入依赖的package包/类
private void init() {
  debug = new Debug();
  // Note that we don't setDebug() here; we do that lazily. Either the
  // user will set it explicitly, or we'll do it automagically if they
  // read from the propertyFile for some other reason. That way, there's
  // no attempt to read from the file before the caller has had a chance
  // to avoid it.
  if (System.getSecurityManager() == null) {
      useServicesMechanism = true;
  }
}
 

import com.sun.org.apache.xml.internal.resolver.helpers.Debug; //导入依赖的package包/类
private void init() {
    debug = new Debug();
// Note that we don't setDebug() here; we do that lazily. Either the
// user will set it explicitly, or we'll do it automagically if they
// read from the propertyFile for some other reason. That way, there's
// no attempt to read from the file before the caller has had a chance
// to avoid it.
if (System.getSecurityManager() == null) {
    useServicesMechanism = true;
}
    // Make sure verbosity is set by xml.catalog.verbosity sysprop
    // setting, if defined.
    queryVerbosityFromSysProp();
}