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The difference between private and protected visibility is that child classes can see and use protected members, but they cannot see private ones. Since a final class will have no children, marking the members of a final class protected is confusingly pointless.

Noncompliant Code Example
public final class MyFinalClass {

  protected String name = "Fred";  // Noncompliant
  protected void setName(String name) {  // Noncompliant
    // ...
  }


Compliant Solution
public final class MyFinalClass {

  private String name = "Fred";
  public void setName(String name) {
    // ...
  }