Hacker News Reader

The toString method does not use a StringBuilder.

Each concatenation will create a new string. That is not good.

If you find Java verbose, just use Scala or Kotlin.

Using StringBuffer may be premature optimization. Java compiler will replace simple String concatenation with StringBuffer automatically [1] and you do not need to polute your code with StringBuffer unless you really find that to be performance bottleneck.

[1] https://docs.oracle.com/javase/specs/jls/se8/html/jls-15.htm...

Reply on news.ycombinator.com