package inclass;
import java.util.*;
public class inclass {

public inclass() {
// TODO Auto-generated constructor stub
}
public static void main(String[] args) {
// TODO Auto-generated method stub
outer outer1 = new outer();
inner inner1 =outer1.new inner(); //这一步就开始出错了
inner.dostuff();
System.out.println(outer.size);
System.out.println(inner.counter);
}

}

public class outer{
private int size =0;
public class inner{
private int counter = 10;
public void dostuff() {
size++;
}
}
}

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