工作中更多的使用靜態(tài)內(nèi)部類構(gòu)建單例模式，記錄一下

public class SingleTon{
private SingleTon(){}

private static class SingleTonHoler{
private static SingleTon INSTANCE = new SingleTon();
}

public static SingleTon getInstance(){
return SingleTonHoler.INSTANCE;
}
}