swing jtextarea 自动行高

 

哈哈哈....

final JTextArea textArea = new JTextArea();
		textArea.setFont(new Font("Meiryo", Font.BOLD, 18));
		textArea.setWrapStyleWord(true);
		textArea.setLineWrap(true);
		textArea.addKeyListener(new KeyAdapter() {
			@Override
			public void keyReleased(KeyEvent e) {
				try {
					Rectangle rect = textArea.modelToView(textArea.getText().length());
					textArea.setBounds(10, 10, 100,Math.max(30, rect.y + rect.height));
				} catch (BadLocationException e1) {
					e1.printStackTrace();
				}
			}
		});