Java Swing - 如何創(chuàng)建JScrollPane并設(shè)置滾動條策略

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import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
public class Main {
  public static void main(String[] args) {
    JFrame window = new JFrame();
    window.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    window.setResizable(false);
    JTextArea textArea = new JTextArea(25, 30);
    JScrollPane textScroll = new JScrollPane(textArea,
        JScrollPane.VERTICAL_SCROLLBAR_ALWAYS,
        JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED);
    window.add(textScroll);
    window.pack();
    window.setVisible(true);
  }
}
 
 
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