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2022-09-14 58d006e05dcf2a20d0ec5367dd03d66a61db6849
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package com.mandi.fendan.util;
 
public class DBchecksingleton {
    
    private volatile static String dbc;
    
    private DBchecksingleton(){
        
    }
    
    public static String setDbc(String dbcUUID,boolean delBdc){
        synchronized (DBchecksingleton.class){
            if(dbc==null){
                if(!delBdc){
                    dbc=dbcUUID;
                }
            }else{
                if(delBdc){
                    if(dbc.equals(dbcUUID)){
                        dbc=null;
                    }
                }
            }
        }
        return dbc;
    }
}