Ejemplo

public class ClassA { private final StringBuffer stringObject = new StringBuffer("A new String"); private StringBuffer nonConstantString = new StringBuffer("Changing String"); public void method() { StringBuffer localString; final StringBuffer localConstantString; } }

Solución

Declare objetos de constante (final) StringBuffer utilizando String en su lugar.

public class ClassA { private final String stringObject = "A new String"; private StringBuffer nonConstantString = new StringBuffer("Changing String"); public void method() { StringBuffer localString; final String localConstantString; } }