The method nanoTime() is undefined for the type System in GWT

Question

While compiling my libgdx application in eclipse I keep getting this error:

 [ERROR] Errors in 'file:/C:/Users/Zorfie/Programing/Java/workspace/Libgdx/src/sim/states/BasicBox2DState.java'
      [ERROR] Line 157:  The method nanoTime() is undefined for the type System
      [ERROR] Line 159:  The method nanoTime() is undefined for the type System
      [ERROR] Line 160:  The method nanoTime() is undefined for the type System
      [ERROR] Line 161:  The method nanoTime() is undefined for the type System
   [ERROR] Errors in 'jar:file:/C:/Program%20Files/eclipse/plugins/com.google.gwt.eclipse.sdkbundle_2.4.0.v201203300216-rel-r37/gwt-2.4.0/gwt-user.jar!/com/google/web/bindery/autobean/shared/impl/StringQuoter.java'
      [ERROR] Line 21:  The import org.json cannot be resolved
      [ERROR] Line 69:  JSONObject cannot be resolved
   [ERROR] Errors in 'jar:file:/C:/Program%20Files/eclipse/plugins/com.google.gwt.eclipse.sdkbundle_2.4.0.v201203300216-rel-r37/gwt-2.4.0/gwt-user.jar!/com/google/web/bindery/autobean/vm/impl/JsonSplittable.java'
      [ERROR] Line 23:  The import org.json cannot be resolved
      [ERROR] Line 24:  The import org.json cannot be resolved
      [ERROR] Line 25:  The import org.json cannot be resolved
      [ERROR] Line 40:  JSONObject cannot be resolved to a type
      [ERROR] Line 47:  JSONObject cannot be resolved to a type

Which implies that GWT does not support .nanoTime(), is this the case or am I simply running with the wrong JRE? (I checked for the project and it said it was 1.6).

Answer 1

There is no support for nanoTime() in GWT since there is no support for it in javascript.

The closest analog in GWT is Duration.currentTimeMillis()