JAVA程序 特急!!!!!!!!!!送分!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Posted 2023-03-15

1.创建一个类car
其中定义
1>一个属性叫做汽车名字 carname
方法为
2>.setCarname
3>.getCarname

2.创建一个类bmw调用car里面的方法进行输出 "汽车名字为:任意定义的汽车名"
1>main函数写在bmw类里面
2>用car类的setCarname方法定义汽车名字
3>用car类的getCarname方法打印汽车名字
4>bmw类里面没有属性

参考技术A 先写Car类保存为Car.java:
public class Car
private String carName;

public String getCarName()
return carName;


public void setCarName(String carName)
this.carName = carName;


public Car()
System.out.println("汽车名字为:任意定义的汽车名");



在写BMW类保存为BMW.java:
public class BMW extends Car

/**
* @param args
*/
public static void main(String[] args)
// TODO Auto-generated method stub
BMW bmw = new BMW();
bmw.setCarName("BMW X8");
System.out.println(bmw.getCarName());


参考技术B 演示继承关系，当子类继承父类的时候就包括父类的所有方法了，
实例话的时候 实例本身就够用了

//父类
public class Car

private String CarnName;

/**
* @return the carnName
*/
public String getCarnName()

return CarnName;


/**
* @param carnName the carnName to set
*/
public void setCarnName(String carnName)

CarnName = carnName;


//子类
public class BWL extends Car

public static void main(String []args)

BWL bwl=new BWL();
bwl.setCarnName("宝马");
System.out.println(bwl.getCarnName());

参考技术C class Car
private String carname;
public void setCarname(String name)
carname = name;


public String getCarname() return carname;


public class BMW extends Car
public BMW(String carname)
setCarname(carname);

public static void main(String[] args)
Car car = new BMW("任意定义的汽车名");
System.out.println("汽车名字为:" + car.getCarname());

参考技术D public class BMW
public static void main(String[] args)
Car car = new Car();
car.setCarName("My Car");
System.out.println(car.getCarName());



class Car
private String carName;

public String getCarName()
return carName;


public void setCarName(String carName)
this.carName = carName;


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