001package basics.objectclass; 002// A static class 003public class Main3 { 004 private Main3() {} 005 static public void main (String[] args) { 006 //stdlib.Trace.graphvizShowSteps (true); stdlib.Trace.run (); 007 Circle3[] list = new Circle3[3]; 008 for (int i = 0; i < list.length; i++) 009 list[i] = new Circle3 (i*10); 010 for (Circle3 c : list) 011 System.out.println(c); 012 } 013} 014// An object class 015final class Circle3 extends Object { 016 int radius; 017 public Circle3(int radius) { this.radius = radius; } 018 public String toString() { return "Circle(" + radius + ")"; } 019}