Swing中的滚动条VIP免费

Sw ing 中的滚动条 下面的代码就演示了为JTextArea、JList 增加滚动条的代码： package com.cownew.Char19; import javax.swing.SwingUtilities; import java.awt.BorderLayout; import javax.swing.DefaultListModel; import javax.swing.JPanel; import javax.swing.JFrame; import javax.swing.JTextArea; import javax.swing.ListModel; import java.awt.Rectangle; import javax.swing.JList; import javax.swing.JScrollPane; public class ScrollPaneTest1 extends JFrame { private JPanel jContentPane = null; private JTextArea jTextArea = null; private JList jList = null; private JScrollPane jScrollPane = null; private JScrollPane jScrollPane1 = null; private JList jList1 = null; private JTextArea jTextArea1 = null; private JTextArea getJTextArea() { if (jTextArea == null) { jTextArea = new JTextArea(); jTextArea.setBounds(new Rectangle(12, 7, 95, 71)); } return jTextArea; } private JList getJList() { if (jList == null) { jList = new JList(); jList.setBounds(new Rectangle(8, 92, 106, 71)); DefaultListModel listModel = new DefaultListModel(); listModel.addElement("22222"); listModel.addElement("33333333"); listModel.addElement("55555555555555"); listModel.addElement("8888888888"); listModel.addElement("88888888"); listModel.addElement("999999999"); jList.setModel(listModel); } return jList; } private JScrollPane getJScrollPane() { if (jScrollPane == null) { jScrollPane = new JScrollPane(); jScrollPane.setBounds(new Rectangle(143, 7, 122, 75)); jScrollPane.setViewportView(getJTextArea1()); } return jScrollPane; } private JScrollPane getJScrollPane1() { if (jScrollPane1 == null) { jScrollPane1 = new JScrollPane(); jScrollPane1.setBounds(new Rectangle(142, 96, 128, 68)); jScrollPane1.setViewportView(getJList1()); } return jScrollPane1; } private JList getJList1() { if (jList1 == null) { jList1 = new JList(); DefaultLi...