我有一个文档比较程序，它使用XWPFDocument APACHE POI将.docx文件显示到文本区域。我需要将一个滚动条附加到textarea，因为我创建了具有固定高度和宽度的textarea。因此，在文本区域中无法看到超过文本的高度和宽度的文件。我研究了一些代码并提出了这些代码。
JTextArea textAreaFile1 = new JTextArea();
textAreaFile1.setEditable(false);
JScrollPane scroll = new JScrollPane ( textAreaFile1 );
scroll.setViewportView(textAreaFile1);
scroll.setVerticalScrollBarPolicy ( ScrollPaneConstants.VERTICAL_SCROLLBAR_ALWAYS );
我不知道如何将其渲染到我的群组布局中。我在创建GUI时使用了窗口构建器，因为代码是自动生成的，我不知道如何将其添加到自动生成的代码中。这是布局的代码。
GroupLayout groupLayout = new GroupLayout(frmOverallResults.getContentPane());
groupLayout.setHorizontalGroup(
groupLayout.createParallelGroup(Alignment.LEADING)
.addGroup(groupLayout.createSequentialGroup()
.addContainerGap()
.addGroup(groupLayout.createParallelGroup(Alignment.LEADING)
.addGroup(groupLayout.createSequentialGroup()
.addComponent(textAreaFile1, GroupLayout.PREFERRED_SIZE, 371, GroupLayout.PREFERRED_SIZE)
.addGap(18))
.addGroup(groupLayout.createSequentialGroup()
.addGroup(groupLayout.createParallelGroup(Alignment.LEADING)
.addGroup(groupLayout.createSequentialGroup()
.addComponent(lblNumberOfWords)
.addPreferredGap(ComponentPlacement.UNRELATED)
.addComponent(wordsFile1)
.addPreferredGap(ComponentPlacement.RELATED, 20, Short.MAX_VALUE))
.addGroup(groupLayout.createSequentialGroup()
.addGroup(groupLayout.createParallelGroup(Alignment.TRAILING, false)
.addComponent(lblNumberOfWords_1, Alignment.LEADING, GroupLayout.DEFAULT_SIZE, GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addComponent(lblNumberOfSentences, Alignment.LEADING, GroupLayout.PREFERRED_SIZE, 122, Short.MAX_VALUE))
.addPreferredGap(ComponentPlacement.RELATED)
.addGroup(groupLayout.createParallelGroup(Alignment.LEADING)
.addComponent(charactersFile1)
.addComponent(paragraphsFile1)))
.addGroup(groupLayout.createSequentialGroup()
.addComponent(Fil, GroupLayout.PREFERRED_SIZE, 91, GroupLayout.PREFERRED_SIZE)
.addPreferredGap(ComponentPlacement.RELATED, 97, Short.MAX_VALUE)))
.addPreferredGap(ComponentPlacement.RELATED)))
.addGroup(groupLayout.createParallelGroup(Alignment.LEADING)
.addGroup(groupLayout.createSequentialGroup()
.addGroup(groupLayout.createParallelGroup(Alignment.TRAILING)
.addComponent(textAreaFile2, Alignment.LEADING, GroupLayout.PREFERRED_SIZE, 395, GroupLayout.PREFERRED_SIZE)
.addGroup(Alignment.LEADING, groupLayout.createSequentialGroup()
.addGroup(groupLayout.createParallelGroup(Alignment.LEADING)
.addComponent(label_3, GroupLayout.PREFERRED_SIZE, 130, GroupLayout.PREFERRED_SIZE)
.addComponent(label_4, GroupLayout.PREFERRED_SIZE, 130, GroupLayout.PREFERRED_SIZE))
.addPreferredGap(ComponentPlacement.RELATED)
.addGroup(groupLayout.createParallelGroup(Alignment.LEADING)
.addComponent(paragraphsFile2, GroupLayout.PREFERRED_SIZE, 52, GroupLayout.PREFERRED_SIZE)
.addComponent(charactersFile2, GroupLayout.PREFERRED_SIZE, 52, GroupLayout.PREFERRED_SIZE)))
.addGroup(Alignment.LEADING, groupLayout.createSequentialGroup()
.addComponent(label, GroupLayout.PREFERRED_SIZE, 106, GroupLayout.PREFERRED_SIZE)
.addPreferredGap(ComponentPlacement.UNRELATED)
.addComponent(wordsFile2, GroupLayout.PREFERRED_SIZE, 52, GroupLayout.PREFERRED_SIZE)))
.addContainerGap())
.addGroup(groupLayout.createSequentialGroup()
.addComponent(lblDocument, GroupLayout.PREFERRED_SIZE, 91, GroupLayout.PREFERRED_SIZE)
.addContainerGap())))
.addGroup(groupLayout.createSequentialGroup()
.addGap(310)
.addComponent(btnNewButton)
.addContainerGap(356, Short.MAX_VALUE))
);
groupLayout.setVerticalGroup(
groupLayout.createParallelGroup(Alignment.LEADING)
.addGroup(groupLayout.createSequentialGroup()
.addContainerGap()
.addGroup(groupLayout.createParallelGroup(Alignment.LEADING)
.addGroup(groupLayout.createSequentialGroup()
.addGroup(groupLayout.createParallelGroup(Alignment.BASELINE)
.addComponent(lblNumberOfWords)
.addComponent(wordsFile1))
.addPreferredGap(ComponentPlacement.RELATED)
.addGroup(groupLayout.createParallelGroup(Alignment.BASELINE)
.addComponent(lblNumberOfSentences)
.addComponent(charactersFile1))
.addPreferredGap(ComponentPlacement.RELATED)
.addGroup(groupLayout.createParallelGroup(Alignment.BASELINE)
.addComponent(lblNumberOfWords_1)
.addComponent(paragraphsFile1))
.addGap(18)
.addComponent(Fil))
.addGroup(groupLayout.createSequentialGroup()
.addGroup(groupLayout.createParallelGroup(Alignment.BASELINE)
.addComponent(label)
.addComponent(wordsFile2))
.addGap(6)
.addGroup(groupLayout.createParallelGroup(Alignment.BASELINE)
.addComponent(label_3)
.addComponent(charactersFile2))
.addGap(6)
.addGroup(groupLayout.createParallelGroup(Alignment.BASELINE)
.addComponent(label_4)
.addComponent(paragraphsFile2))
.addGap(18)
.addComponent(lblDocument)))
.addPreferredGap(ComponentPlacement.RELATED)
.addGroup(groupLayout.createParallelGroup(Alignment.BASELINE)
.addComponent(textAreaFile2, GroupLayout.PREFERRED_SIZE, 448, GroupLayout.PREFERRED_SIZE)
.addComponent(textAreaFile1, GroupLayout.PREFERRED_SIZE, 448, GroupLayout.PREFERRED_SIZE))
.addGap(18)
.addComponent(btnNewButton)
.addGap(24))
);
我知道我应该没有使用窗口构建器并手动创建它。有什么想法吗？