本文详细介绍了如何在Java Swing中使用GridBagConstraints类来管理组件的布局，包括组件的位置、大小、权重等属性，以及如何调整组件之间的间距。
c.gridx = 0;
c.gridy = 0;
c.gridheight = 3;
c.gridwidth = 3;
c.weightx = 1.0;
c.weighty = 1.0;
c.anchor = GridBagConstraints.NORTHWEST;
mainPanel.add(new JScrollPane(textArea), c);
c.gridy = 0;
c.gridheight = 3;
c.gridwidth = 3;
c.weightx = 1.0;
c.weighty = 1.0;
c.anchor = GridBagConstraints.NORTHWEST;
mainPanel.add(new JScrollPane(textArea), c);
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