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package b; public interface ZuoBiao { double zuobiao(); }
package b; public class Point implements ZuoBiao { double x; double y; double z; public double getX() { return x; } public void setX(double x) { this.x = x; } public double getY() { return y; } public void setY(double y) { this.y = y; } public double getZ() { return z; } public void setZ(double z) { this.z = z; } public double zuobiao() { System.out.println("显示坐标 "+"("+x+","+y+","+z+")"); return 0; } public void yuandianjuli() { System.out.println("距原点的距离:"+Math.sqrt(z*z+Math.sqrt(x*x+y*y)*Math.sqrt(x*x+y*y))); } }
package b; public class TestZuoBiao { public static void main(String[] args) { Point xyz=new Point(); xyz.setX(3.0); xyz.setY(4.0); xyz.setZ(6.0); xyz.zuobiao(); xyz.yuandianjuli(); } }
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原文地址:http://www.cnblogs.com/wenwen123/p/5532451.html