小编use*_*442的帖子

我一直在网上搜索为什么我的textarea不在JScrollPane中滚动的答案？JScrollPane旋钮根据textarea中的行数调整其大小.看起来它的工作,但我不能滚动它.任何建议将不胜感激!

import java.awt.Color;
import java.awt.Dimension;
import java.awt.Font;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import java.awt.Insets;
import java.text.DecimalFormat;
//import java.util.regex.Pattern;


import javax.swing.BorderFactory;
import javax.swing.ImageIcon;
import javax.swing.JDialog;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
//import javax.swing.SwingWorker;
import javax.swing.text.BadLocationException;
import javax.swing.text.DefaultCaret;

public class Output_Window extends JFrame implements Runnable {

    public boolean keepRefreshing = true;

    private JTextArea chosen_settings;
    public JTextArea package_status;
    private JTextArea program_status;
    private JTextArea efficiency;
    private JTextArea emptyPackages;
    private JTextArea skipped_cases;

    private JTextArea package_status_title;
    private JTextArea program_status_title;
    private JTextArea efficiency_title;
    private JTextArea chosen_settings_title; …