code: public static String getDefaultValueForType( JType type ) {
          JPrimitiveType primitiveType = type.isPrimitive();
          if ( null != primitiveType ) {
              return primitiveType.getUninitializedFieldExpression();
          }
          return "null";
      }
docs: Returns the default value of the given type.
  <ul>
  <li>{@link Object} : null</li>
  <li>char : '\u0000'</li>
  <li>boolean : false</li>
  <li>other primitive : 0</li>
  </ul>
  
  @param type type to find the default value
  @return the default value of the type.