about Lunar lander in Android (inner class) -

i new android.

also new java, please feel free give me advice, appreciate it.

the question in lunarlander.java

/** handle thread that's running animation. */ private lunarthread mlunarthread;  /** handle view in game running. */ private lunarview mlunarview; 

but in lunarview.java

class lunarview extends surfaceview implements surfaceholder.callback {  /** handle application context, used e.g. fetch drawables. */ private context mcontext;  /** pointer text view display "paused.." etc. */ private textview mstatustext;   class lunarthread extends thread 

i have learned c , c++

so can't figure out why can call inner class??

classes , fields without modifiers private or protected can accessible class in same package. can access lunarthread lunarview.lunarthread or import class lunarthread done in lunarlander.java:

import com.example.android.lunarlander.lunarview.lunarthread; 

see book java references.