private static String jsonString(String s){
    char[] temp = s.toCharArray();
    int n = temp.length;
    for(int i =0;i<n;i++){
        if(temp[i]==':'&&temp[i+1]=='"'){
            for(int j =i+2;j<n;j++){
                if(temp[j]=='"'){
                    if(temp[j+1]!=',' &&  temp[j+
 
1]!='}'){
                        temp[j]='”';
}else if(temp[j+1]==',' ||  temp[j+1]=='}'){
                        break ;
}
                }
            }
        }
    }
    return new String(temp);
}