如何使JTextArea可滚动到用户输入？

Question

I have been working on a java application since a few days (I am a novice). I have to make use of JTextArea for user input(250 characters). I have used setPreferredSize() method to resize my JTextArea . However, as the user types, when the inserted words exceed the JTextArea height, I cannot see the rest of the input though the user types.

Is there a way to solve this problem?

Answer 1

Please post some code so we can see what you did already. What you can try is add a JScrollPane :

JFrame frame = new JFrame ("Frame");
JTextArea textArea = new JTextArea ("Textarea");

JScrollPane scroll = new JScrollPane (textArea, 
   JScrollPane.VERTICAL_SCROLLBAR_ALWAYS, JScrollPane.HORIZONTAL_SCROLLBAR_ALWAYS);

frame.add(scroll);//add Scrollbar to frame

Answer 2

Please follow this link

import javax.swing.*;
public class ScrollingTextArea 
{
  JFrame f;
  JTextArea ta;
  JScrollPane scrolltxt;
  public ScrollingTextArea() 
    {
         // TODO Auto-generated constructor stub

          f=new JFrame();
          f.setLayout(null);
          f.setVisible(true);
          f.setSize(500,500);
          ta=new JTextArea();
          ta.setBounds(5,5,100,200);

          scrolltxt=new JScrollPane(ta);
          scrolltxt.setBounds(3,3,400,400);

          f.add(scrolltxt);

    }

     public static void main(String[] args) 
    {
        new ScrollingTextArea();
    }

}