使属性可读/可写但不可覆盖/可重新声明？

Question

是否可以阻止子类覆盖/重新声明类属性，但仍然让它们读取它＆amp;写吧？

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

将其设为私有并提供访问者。

class Human
{
    private boolean isMale;

    public boolean isMale() {
        return isMale;
    }

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

请注意，您无法避免重新声明。