When learning JavaEE the first time, it’s hard to find a project that you can click the triangle and see the code run like in Java SE. I’ve been finding projects like that and after countless hours, I’ve found one from Okta. With some modifications, I could get it up and running and also configure … Read more
Recently, I need to upgrade my English learning app on Android to use multiple servers. Previously, I used two servers already. However, the way I manage media files caused me a lot of headache. So, I decided to switch to DigitalOcean since they have servers around the world and the pricing is good ($5 for … Read more
Recently, I have a specific need to combine multiple files into one big file. The task is very simple. However, if I do it manually (combine over 32,000 small text files into one), it may cost me a day, or even more. How to combine multiple text files into one So, I decided to make … Read more
If you are like me, I have to deal with text a lot in my work. As a programmer, I need to find and match string. Recently, a friend of mine, who is an accountant gave me a list of books’ titles. Most of them are fine. However, there are some contains strange characters and … Read more
As an ESL, I usually wonder: “how many words I need to know to speak English well?”. I read somewhere that you don’t need more than 2,000 words to carry out 99% of daily conversations. 2,000 words don’t seem to be a lot and if I can learn 10 words a day, I can be … Read more