constrctiondemo.java

JAVA的一些基础教程

class Person{
/*	public Person(){
		System.out.println("Person的构造函数被调用");
	}
*/
}

class Car{
	String band;
	float price;
	public Car(String a,float b){
		band = a;
		price = b;
		System.out.println("car的构造函数被调用");
	}
	public Car(String a){
		this(a,10000);
	}
	public Car(){
		this("本田",500000);
	}

	public void print(){
		System.out.println("本车是"+ band+"，价钱:"+price);
	}
}
public class ConstrctionDemo{
	public static void main(String arg[]){
		Person 张三= new Person();
		Car 吉普车 = new Car("北京吉普",65555.5f);
		Car abc =  new Car();
		abc.print();
		Car def = new Car("法比亚");
		def.print();
		吉普车.print();
	}
}