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PMD is a tool that looks for potential problems like possible bugs, dead code, suboptimal code, overcomplicated expressions or duplicate code.

There is a newer version: 3.3.2

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Log.v calls should be protected by checking Config.LOGV first. Example :
public class DummyActivity extends Activity {
  public void foo() {
    Log.v("TAG", "msg1"); // Bad
    bar();
    if (Config.LOGV) Log.v("TAG", "msg1"); // Good
  }
}