public void printStack(int stackId){
		
		switch (stackId) {
		case STACK_1:
			System.out.print("\n\n\nPrinting STACK_1 Contents : [ ");
			for(int i=0; i<head1; i++){
				System.out.print(data[i*3]+",\t");
			}
			System.out.println("]");
			break;
		case STACK_2:
			System.out.print("\n\n\nPrinting STACK_2 Contents : [ ");
			for(int i=0; i<head2; i++){
				System.out.print(data[(i*3)+1]+",\t");
			}
			System.out.println("]");
			break;
		case STACK_3:
			System.out.print("\n\n\nPrinting STACK_3 Contents : [ ");
			for(int i=0; i<head3; i++){
				System.out.print(data[(i*3)+2]+",\t");
			}
			System.out.println("]");
			break;
		default:
			break;
		}
	}