java.lang.NullPointerException
at sun.awt.SunToolkit.getImageFromHash(SunToolkit.java:798)
at sun.awt.SunToolkit.getImage(SunToolkit.java:855)
at ImgPanel1.initImg(Fishing.java:196)
at Fishing.<init>(Fishing.java:22)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
at java.lang.Class.newInstance0(Class.java:355)
at java.lang.Class.newInstance(Class.java:308)
at sun.applet.AppletPanel.createApplet(AppletPanel.java:779)
at sun.applet.AppletPanel.runLoader(AppletPanel.java:708)
at sun.applet.AppletPanel.run(AppletPanel.java:362)
at java.lang.Thread.run(Thread.java:619)
以上是报错提示。
我是个初学者，希望高手能给些指点。
applet小程序可以将主类的构造函数作为入口吗？就是不通过init（）初始化
------解决方案--------------------
这个是空指针错误的问题，大概是你传值的时候，传过去的是null值。所以就产生了错误