写成英文你就知道了:
public class Test{
public static void main(String[] args) {
}
public void test(){
Month month;
Year year;
year = new Year(this);
year.setYear(year);
month =new Month(this);
month.setMonth(month);
}
}
class Month{
public Month(Object Object){
}
public void setMonth(Object Object){
}
}
class Year{
public Year(Object Object){
}
public void setYear(Object Object){
}
}
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