My boss mobilized me to do the operation and maintenance of Java projects. What should I do to ensure that my skills are not bad?

People who are really good at English can not only understand the English of the British and Americans, but also the English of the Japanese and Indians. People who are really good at programming must not only be able to play with gorgeous code, but also be able to play with shitty code!

Read thousands of books and travel thousands of miles. Not every book is a good book, and not every mile is a good road. But if you really do it, the realm will be completely different!

Attached is a joke:

A Frenchman, a German and a Japanese do the same job at the same time

The employer tells the French: You are responsible for logistics;

Tell the Germans: you are responsible for maintenance;

Tell the Japanese: you are responsible for supply;

The next day, the French and Germans came to work, But unable to find any Japanese, they decided to start working first.

At this time, the Japanese jumped out and shouted: surprise!