java JPanel 问题~~

Question

public class JPanel_dataSetting{
  public JPanel_dataSetting(){
   JPanel_dataSetting = new JPanel();
   JPanel_dataSetting.setBorder(new TitledBorder("邮件设置"));
   JPanel_dataSetting.setBounds(0,0,200,200);
   EMail_Setting.add(JPanel_dataSetting);
   setLayout(null);
   new JLabel_ds_EMailAddress();
  }
  public class JLabel_ds_EMailAddress{
   public JLabel_ds_EMailAddress(){
    JLabel_ds_EMailAddress = new JLabel("您的邮件地址：");
    JPanel_dataSetting.add(JLabel_ds_EMailAddress);
    JLabel_ds_EMailAddress.setBounds(0,10,60,60);
    }
  }
 }
JLabel_ds_EMailAddress.setBounds(0,10,60,60);
改变不了位置？为什么？怎么解决？ 

Answer 1

你既然把label装进了panel里面，label的位置布局就只能取决于panel。可以先把panel的布局设置为null,然后手动布局.JPanel_dataSetting.setLayout(null);
JPanel_dataSetting.add(JLabel_ds_EMailAddress); 
JLabel_ds_EMailAddress.setBounds(0,10,60,60);