小编iAm*_*avy的帖子

1. 我有一个类(1)有一些构造函数(arg和没有args).在另一个类(2)中,使用新的构造函数()创建类1的对象.那么在这种情况下会调用main方法吗？

2. 理想情况下,何时在任何类中调用main方法？

在编译我的代码时,我遇到了这个问题:

No source code is available for type com.google.gwt.visualization.client.visualizations.corechart.PieChart; did you forget to inherit a required module?
 [ERROR] Line 30: No source code is available for type com.google.gwt.visualization.client.visualizations.corechart.PieChart.PieOptions; did you forget to inherit a required module?
 [ERROR] Line 38: No source code is available for type com.google.gwt.visualization.client.AbstractDataTable; did you forget to inherit a required module?
 [ERROR] Line 39: No source code is available for type com.google.gwt.visualization.client.DataTable; did you forget to inherit a required module?
 [ERROR] Line 40: No source code …