How the program work ???

Question

hi everyont i am doubt about how the program work???
public class TestClone implements Cloneable{
     int count;
     TestClone next;
     public TestClone(int count){
          this.count=count;
          if(count>0)
          next=new TestClone(count-1);
     void add(){         
     count++;
     if(next!=null) // how it can loop and
     next.count++; //execution next.count++ ??
     public String toString(){    // from the result  the object execut  the method  automatic, but i think  it isnot  definite as static ,it cannot execut
          String s=String.valueOf(count)+"";
          if(next!=null) //the same question as about
          s+=next.toString();
          return s;
     public Object clone(){
          Object o=null;
          try{
               o=super.clone();
               }catch(Exception e)
               {System.out.println("cannot clone");}
               return o;
public static void main(String []args){
     TestClone c=new TestClone(5);
     System.out.println("c="+c);
//the result is 5 4 3 2 1 0
//c is object why it can print out
     TestClone cl=(TestClone)c.clone();
     System.out.println("c="+c);
     c.add();
     System.out.println("after added\nc="+c+"\ncl="+"cl");
//the result is 6 5 3 2 1 0 but where is 4 ??
// 5 4 3 2 1 0
     }     }

Answer 1

Is this your code? What do you WANT it to do? What's the purpose?
Thanks!
-Zach