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public class DanLiModel {
private static DanLiModel danLi;
private DanLiModel() {
};
public static DanLiModel getDanLi() {
if (danLi==null) {
danLi=new DanLiModel();
}
return danLi;
}
}
class Test{
public static void main(String[] args) {
DanLiModel d1=DanLiModel.getDanLi();
DanLiModel d2=DanLiModel.getDanLi();
System.out.println(d1=d2);
}
}