java scrollbar_Java Swing - 如何設定JScrollBar垂直/水準

import java.awt.BorderLayout;

import javax.swing.JFrame;

import javax.swing.JPanel;

import javax.swing.JScrollPane;

import javax.swing.JTextArea;

import javax.swing.JTextField;

public class Main extends JPanel {

int TA_ROWS = 25;

int TA_COLS = 60;

JTextField inputField = new JTextField();

JTextArea talkArea = new JTextArea(TA_ROWS, TA_COLS);

public Main() {

JScrollPane talkPane = new JScrollPane(talkArea,

JScrollPane.VERTICAL_SCROLLBAR_ALWAYS,

JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED);

JScrollPane inputPane = new JScrollPane(inputField,

JScrollPane.VERTICAL_SCROLLBAR_NEVER,

JScrollPane.HORIZONTAL_SCROLLBAR_ALWAYS);

int gap = 10;

setLayout(new BorderLayout(gap, gap));

add(talkPane, BorderLayout.CENTER);

add(inputPane, BorderLayout.SOUTH);

}

public static void main(String[] args) {

JFrame f = new JFrame("Main");

f.getContentPane().add(new Main());

f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

f.pack();

f.setVisible(true);

}

}