java - java对话中未捕获空指针异常

Question

我正在尝试从 java 对话框接收输入，但当框关闭时我似乎无法捕获 NullPointerException，有人可以帮忙吗？

private static final String DEFAULTNAME = "Player001"; 

public class Player implements Serializable
{
    private String name;
    private int score;

    public Player(String Pname,int Pscore)
    {
         name = Pname;
         score = Pscore;
    }
}

    try
    {
        person = new Player(JOptionPane.showInputDialog("Please enter your name"),0);
    }
    catch(NullPointerException e)
    {
        person = new Player(DEFAULTNAME,0);
    }
    catch(Throwable t)
    {
        person = new Player(DEFAULTNAME,0);
    }

有人有解决方案或者有办法使对话框无法关闭吗？

Answer 1

在添加名称之前，最好先检查名称是否存在无效值

String name = JOptionPane.showInputDialog("Please enter your name");
if(name == null || name.equals(""))name = DEFAULTNAME;
person = new Player(name,0);