class StackExcep extends Exception{
	private String er;
  
  	StackExcep(String s){
   		er=s;
  	}

  	public String toString(){
    		return er + "Occured";
  	}
}

class Stack{
 	private int arr[];
 	private int tos;
 
 	Stack(){
  		arr=new int[10];
  		tos=0;
 	}
  
 	void push(int val) throws StackExcep{
  		if(tos<10)
    			arr[tos++]=val;
  		else
   			throw new StackExcep("Overflow ");
 	}

 	int pop() throws StackExcep{
  		if(tos>0)
   			return arr[--tos];
 		else
   			throw new StackExcep("Underflow ");
 	}
}

class StackExceptionTest{
	public static void main(String args[]){
   		int i=0;
   		Stack S=new Stack();
   		try{
      			for(i=0;i<10;i++){
        			S.push(i+1);
        			System.out.println("Element Inserted At Index Position:" + i);
      			}
      			S.push(11);
   		}catch(StackExcep e){
     			System.out.println("Exception Caught: " + e);
   		}
   		try{
      			while(i>=0){
       				System.out.println("Element Poped:" + S.pop());
       				i--;
     			}
     			S.pop();
   		}catch(StackExcep e){
   			System.out.println("Exception Caught: " + e);
  		}
 	}
}