Setters are Evil?

  • In Java, it is common to have a setter method
  • public void setSomething(String something) {
      this.something = something;
  • public setters let any code change your object (or class's data)
  • It becomes hard to know where data is changing and when
  • Who is responsible for calling the setter? Who is allowed?
  • Setters can almost always be avoided (JPA is a good exception)

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