0
所以我有这个JFrame,它包含一个JPanel,并且在那里我添加了JLabels和我想要的信息,但是因为我一直在添加标签,所以文本太长了,所以我想添加一个滚动条。基本上我想让JFrame带有一个可滚动的JPanel。我有这个代码,但我的问题是,即使滚动条出现,但它不会移动,并且当文本很多时不起作用,这意味着文本仍然被剪切掉,滚动条没有移动。有谁知道如何解决这一问题?如何制作包含Jpanel滚动条的Jframe?
import javax.swing.*;
import java.awt.*;
import java.util.*;
public class Bar {
JFrame info = new JFrame("Information");
JLabel ballinf = new JLabel();
JPanel contentPane = new JPanel();
JScrollPane scrolling = new JScrollPane();
public Bar(){
contentPane.setOpaque(true);
contentPane.setBackground(Color.WHITE);
contentPane.setLayout(null);
scrolling = new JScrollPane(contentPane,JScrollPane.VERTICAL_SCROLLBAR_ALWAYS,JScrollPane.HORIZONTAL_SCROLLBAR_NEVER);
info.add(scrolling);
info.setSize(750, 600);
info.setLocationByPlatform(true);
info.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
info.setVisible(true);
}
public void adding(int pos){
ballinf = new JLabel("Something ",JLabel.CENTER);//assume the text will be bigger here and have more info
ballinf.setSize(700, 30);
ballinf.setForeground(Color.green);
ballinf.setLocation(5, 5+pos);
contentPane.add(ballinf);
info.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
info.setVisible(true);
}
public static void main(String[] args){
Bar stats = new Bar();
stats.adding(0);
stats.adding(20);//this will be done in a for loop for more than 2 times so the text ends up to be a lot
}
}
,应重新验证和重绘被称为? – DarkV1
那么我应该删除setLayout(null)命令? – helpme
@helpme,你试过了吗? – camickr