package ch05_13;
public class SanJiaoXing {
	//成员属性的声明
	private double x;
    private double y;
    private double z;
    //构造方法的定义——带参数的
	public SanJiaoXing(double x, double y, double z) {
		this.x = x;
		this.y = y;
		this.z = z;
	}
	//默认构造方法，这里显式给出
	public SanJiaoXing() {} 
}
