3.5.5 汽车类的例子
- 字段
私有字段(int)。_百公里耗油,表示汽车行驶100公里消耗几升油(默认为10)。
私有字段(int)。_油箱容积,表示油箱最大可以加几升油(默认为60)。
私有字段(int)。_油表,表示当前油箱还剩余几升油。
私有字段(int)。_公里数,表示汽车一共行驶了几公里。 - 属性
只读属性(int)。百公里耗油,封装_百公里耗油字段,百公里耗油对于一个汽车来说是一个固定参数,一般不会改变,因此不允许用户设置。
只读属性(int)。油箱容积,封装_油箱容积字段,油箱容积对于一个汽车来说是一个固定参数,一般不会改变,因此不允许用户设置。
读写属性(int)。油表,封装_油表字段。
读写属性(int)。公里数,封装_公里数字段。 - 构造方法
不带参数。获得一个加满油的新车,里程数为0。
带一个当前油表参数。获得一个新车,里程数为0,油表为传入的当前油表参数的值。
带一个当前油表参数和一个当前里程参数。获得一个旧车,里程数为传入的当前里程参数的值,油表为传入的当前油表参数的值。 - 私有方法
计算油耗。根据传入的行驶公里参数计算油耗并返回。 - 公有方法
行驶。根据传入的行驶公里数参数行驶一段距离。如果油耗不足。给出行驶失败提示,否则给出行驶成功提示。
加油。直接为汽车加满油。显示一共加了多少升的油。
重载了油箱方法。根据传入的加油体积参数为汽车加一定的油。如果加入的油加上剩余的油超过了油箱最大容积,就给出加油失败提示,否则给出加油成功提示。
获取汽车当前信息。输出汽车的当前油表数和当前里程数。
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