Java习题--P71第四题

public class Vehicle {

	int wheels;
	float weight;
	public Vehicle(int wheels, double d) {
		super();
		this.wheels = wheels;
		this.weight = (float) d;
	}
	void show() {
		System.out.print("车轮:"+this.wheels);
		System.out.print(",车重:"+this.weight);
	}
}




public class Trunk extends Vehicle {
	int load;
	public Trunk(int wheels, float weight,int load) {
		super(wheels, weight);
		// TODO Auto-generated constructor stub
		this.load = load;
	}
	void show() {
		System.out.println("车型:卡车");
		super.show();
		System.out.println("载重量:"+this.load);
	}

}






public class Minibus extends Vehicle {
	
	int passenger;
	public Minibus(int wheels, float weight,int passenger) {
		super(wheels, weight);
		// TODO Auto-generated constructor stub
		this.passenger = passenger;
	}
	void show() {
		System.out.println("车型:面包车");
		super.show();
		System.out.println("载人:"+this.passenger);
	}

}



public class TestVehicle {

	public static void main(String[] args) {
		// TODO Auto-generated method stub
		Minibus b = new Minibus(4,3000.0f,12);
		b.show();
		Trunk t = new Trunk(6,7500.0f,80);
		t.show();
	}

}


public class TestVehicle {

	public static void main(String[] args) {
		// TODO Auto-generated method stub
		Minibus b = new Minibus(4,3000.0f,12);
		b.show();
		Trunk t = new Trunk(6,7500.0f,80);
		t.show();
	}

}