title: Find add method of java.util.list via JNI
body: <p>I am trying to find the "add" method of java.util.list. The method takes the input and return value type as follows:</p>
  
  <pre><code>jmethodID addMethodID = (*env)-&gt;GetMethodID(env, listClass, "add", "(Ljava/lang/Object)(Ljava/lang/String)Z;");
  </code></pre>
  
  <p>return value is NULL. Where am I going wrong? Is the boolean specification of the output wrong or is it the input type? Should I specify my input type? If so, how?</p>