使属性具有可读性/可写性，但不是可重写/可重声明？

Question

是否有可能阻止子类重写/重新声明一个类属性，但仍然让它们读取&写入它？

class Human
{
    public boolean isMale;
    ...
}

class Asian extends Human
{
    public void livingLife()
    {
         // this is OK
         (isMale) ? doSomething() : doSomethingElse();

         // this is OK
         isMale = false;
    }

    // redeclaration is not OK
    public boolean isMale;
}

Answer 1

使其私有，并提供访问器。

class Human
{
    private boolean isMale;

    public boolean isMale() {
        return isMale;
    }

    public void setIsMale(boolean isMale) {
        this.isMale = isMale;
    }
}

请注意，您不能避免重新声明。