优质回答 回答者：brutalmraz 2018-12-29

publicclassAutoMobile{

protectedintnumbersOfWheels;

protectedStringautoMobileColor;

protectedintautoMobileWeight;

protectedintspeed;

publicAutoMobile(){

this(4,"黑色",100);

}

publicAutoMobile(intnumbersOfWheels,StringautoMobileColor,intautoMobileWeight){

this.numbersOfWheels=numbersOfWheels;

this.autoMobileColor=autoMobileColor;

this.autoMobileWeight=autoMobileWeight;

this.speed=0;

}

publicvoidspeedUp(){

speed++;

System.out.println("这是AutoMobile的加速方法，当前速度："+speed);

}

publicvoidspeedDown(){

speed--;

System.out.println("这是AutoMobile的减速方法，当前速度："+speed);

}

publicvoidstop(){

speed=0;

System.out.println("这是AutoMobile的停车方法，当前速度："+speed);

}

publicintgetNumbersOfWheels(){

returnnumbersOfWheels;

}

publicvoidsetNumbersOfWheels(intnumbersOfWheels){

this.numbersOfWheels=numbersOfWheels;

}

publicStringgetAutoMobileColor(){

returnautoMobileColor;

}

publicvoidsetAutoMobileColor(StringautoMobileColor){

this.autoMobileColor=autoMobileColor;

}

publicintgetAutoMobileWeight(){

returnautoMobileWeight;

}

publicvoidsetAutoMobileWeight(intautoMobileWeight){

this.autoMobileWeight=autoMobileWeight;

}

publicintgetSpeed(){

returnspeed;

}

publicvoidsetSpeed(intspeed){

this.speed=speed;

}

}

publicclassCarextendsAutoMobile{

protectedStringairConditioner;

protectedStringcd;

publicCar(){

super();

this.airConditioner="空调A";

this.cd="sony";

}

publicvoidspeedUp(){

speed+=2;

System.out.println("这是Car的加速方法，当前速度："+speed);

}

publicvoidspeedDown(){

speed-=2;

System.out.println("这是Car的减速方法，当前速度："+speed);

}

publicStringgetAirConditioner(){

returnairConditioner;

}

publicvoidsetAirConditioner(StringairConditioner){

this.airConditioner=airConditioner;

}

publicStringgetCd(){

returncd;

}

publicvoidsetCd(Stringcd){

this.cd=cd;

}

}

publicclassTest{

publicstaticvoidmain(String[]args){

Carcar=newCar();

car.speedUp();

car.speedUp();

car.speedDown();

car.stop();

}

}

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