在添加到ArrayList时构造对象

public class ComputerKit {
private ArrayList <ComputerPart> parts = new ArrayList();
//constructor
public ComputerKit(ComputerPart ... cp){
    for(int x=0;x<cp.length;x++){
        parts.add(x, cp);

    }
}

//method toString
@Override
public String toString(){
    String s = parts.get(0).toString();

    return s;
}
public class ComputerKit {
private ArrayList <C