java子对话框关闭导致主对话框关闭的解决

class Hello extends JFrame{String s1,s2,s3;Hello(String str1,String str2,String str3){super("欢迎");s1=str1;s2=str2;s3=str3;setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);TextArea jl=new TextArea();jl.setText("用户名："+str1+"\n密码:"+str2+"\n邮箱"+str3);add(jl);pack();        setLocation(400, 400);        setVisible(true);}}

将 setDefaultCloseOperation 参数改为 JFrame.DISPOSE_ON_CLOSE 即可