如何使JPanel可滚动? [英] How to make a JPanel scrollable?
问题描述
我有一个JFrame,我想在其中显示一个JInternal Frame,其中包含一个Jpanel.此JPanel包含一些JLabel和JTextField.由于JInternal Frame的大小小于JPanel的大小. JInternal Frame不可调整大小,因此我想使包含表单的jpanel应该可滚动.这是此代码中的演示代码,我没有使用JInternal Frame来简化它.但是,当我执行此代码时,它没有显示滚动条. 请告诉我朋友这段代码有什么问题.我想使用setBounds()方法代替setDimension()方法或setPreferredSize()方法.这样有可能吗?
I have a JFrame and In which I want to show a JInternal Frame whihc contains a Jpanel. This JPanel contains some JLabels and JTextFields. As the size of the JInternal Frame is smaller than the size of the JPanel. The JInternal Frame is not resizable so I want to make the jpanel which contains the form should be scrollable. Here is the demo code of it in this code I have not used the JInternal Frame for making it simple. But when I execute this code its not showing scrollbar. Please tell me friends whats wrong with this code. I want to use setBounds() method instead of setDimension() method or setPreferredSize() method. So is it possible?
这是我的代码
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTextField;
public class InterfaceDesign {
public static void main(String args[]){
InterfaceDesign id=new InterfaceDesign();
id.getPnlProjectDetail("My Project");
}
public void getPnlProjectDetail(String strProjectName){
JPanel pnlProjectDetail=new JPanel();
JScrollPane scrProjectDetail;
pnlProjectDetail.setLayout(null);
pnlProjectDetail.setBounds(0, 0, 400,400);
JFrame frmtest=new JFrame();
frmtest.setBounds(1,1,300,200);
JLabel lblFirstName=new JLabel("First Name");
JLabel lblLastName=new JLabel("Last Name");
JLabel lblAddress=new JLabel("Address");
JLabel lblCity=new JLabel("City");
JLabel lblZipCode=new JLabel("Zip Code");
JLabel lblPhone=new JLabel("Phone");
JLabel lblEmailID=new JLabel("Emain Id");
JTextField tfFirstName=new JTextField();
JTextField tfLastName=new JTextField();
JTextField tfAddress=new JTextField();
JTextField tfCity=new JTextField();
JTextField tfZipCode=new JTextField();
JTextField tfPhone=new JTextField();
JTextField tfEmailID=new JTextField();
lblFirstName.setBounds(25, 55, 85, 20);
tfFirstName.setBounds(25, 85, 85, 20);
pnlProjectDetail.add(lblFirstName);
pnlProjectDetail.add(tfFirstName);
lblLastName.setBounds(25, 115, 85, 20);
tfLastName.setBounds(25, 145, 85, 20);
pnlProjectDetail.add(lblLastName);
pnlProjectDetail.add(tfLastName);
lblAddress.setBounds(25, 175, 85, 20);
tfAddress.setBounds(25, 205, 85, 20);
pnlProjectDetail.add(lblAddress);
pnlProjectDetail.add(tfAddress);
lblCity.setBounds(25, 235, 85, 20);
tfCity.setBounds(25, 265, 85, 20);
pnlProjectDetail.add(lblCity);
pnlProjectDetail.add(tfCity);
lblZipCode.setBounds(25, 295, 85, 20);
tfZipCode.setBounds(25, 325, 85, 20);
pnlProjectDetail.add(lblZipCode);
pnlProjectDetail.add(tfZipCode);
lblPhone.setBounds(25, 355, 85, 20);
tfPhone.setBounds(25, 385, 85, 20);
pnlProjectDetail.add(lblPhone);
pnlProjectDetail.add(tfPhone);
lblEmailID.setBounds(25, 415, 85, 20);
tfEmailID.setBounds(25, 445, 85, 20);
pnlProjectDetail.add(lblEmailID);
pnlProjectDetail.add(tfEmailID);
scrProjectDetail=new JScrollPane(pnlProjectDetail);
frmtest.setContentPane(scrProjectDetail);
//frmtest.add(scrProjectDetail);
frmtest.setVisible(true);
frmtest.setResizable(false);
frmtest.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
//return pnlProjectDetail;
}
}
请指导我的朋友们! 谢谢!
Please guide me friends! Thanks you!
推荐答案
在JScrollPane中调用面板的setPreferredSize().
Call setPreferredSize() of the panel in the JScrollPane.
但是使用LayoutManager会好得多!
But it's much much better to use LayoutManager!
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