Java17

Modern Java is really awesome when it comes to “Hello, World!” demos. It’s also cool for a sophisticated systems and algorithms, provided their authors write code which obeys a few fairly simple contracts and avoids obvious traps.

There are a few mantras regarding recent features of modern Java, such as:

• records can replace JavaBeans everywhere
• you never need to write hashCode() for records
• pattern matching with instanceof is the best tool for equals()
• just ignore --illegal-access and set it to permit
• synchronize (new Long(42)) is the best for monitoring and so on.

This talk has been given at jLove, Doing Java Better and Java Day Lviv.