我发现这个页面：

http://www.java2s.com/Tutorial/Java/0240__Swing/VerticalLabelUI.htm当我需要这样做.

我不知道你是不是要把这些字母站在对方身上,或者是旋转在他们身边.

/*

* The contents of this file are subject to the Sapient Public License

* Version 1.0 (the "License"); you may not use this file except in compliance

* with the License. You may obtain a copy of the License at

* http://carbon.sf.net/License.html.

*

* Software distributed under the License is distributed on an "AS IS" basis,* WITHOUT WARRANTY OF ANY KIND,either express or implied. See the License for

* the specific language governing rights and limitations under the License.

*

* The Original Code is The Carbon Component Framework.

*

* The Initial Developer of the Original Code is Sapient Corporation

*

* Copyright (C) 2003 Sapient Corporation. All Rights Reserved.

*/

import java.awt.Dimension;

import java.awt.FontMetrics;

import java.awt.Graphics;

import java.awt.Graphics2D;

import java.awt.Insets;

import java.awt.Rectangle;

import java.awt.geom.AffineTransform;

import javax.swing.Icon;

import javax.swing.JComponent;

import javax.swing.JLabel;

import javax.swing.plaf.basic.BasicLabelUI;

/**

* This is the template for Classes.

*

*

* @since carbon 1.0

* @author Greg Hinkle,January 2002

* @version $Revision: 1.4 $($Author: dvoet $/ $Date: 2003/05/05 21:21:27 $)

* @copyright 2002 Sapient

*/

public class VerticalLabelUI extends BasicLabelUI {

static {

labelUI = new VerticalLabelUI(false);

}

protected boolean clockwise;

public VerticalLabelUI(boolean clockwise) {

super();

this.clockwise = clockwise;

}

public Dimension getPreferredSize(JComponent c) {

Dimension dim = super.getPreferredSize(c);

return new Dimension( dim.height,dim.width );

}

private static Rectangle paintIconR = new Rectangle();

private static Rectangle paintTextR = new Rectangle();

private static Rectangle paintViewR = new Rectangle();

private static Insets paintViewInsets = new Insets(0,0);

public void paint(Graphics g,JComponent c) {

JLabel label = (JLabel)c;

String text = label.getText();

Icon icon = (label.isEnabled()) ? label.getIcon() : label.getDisabledIcon();

if ((icon == null) && (text == null)) {

return;

}

FontMetrics fm = g.getFontMetrics();

paintViewInsets = c.getInsets(paintViewInsets);

paintViewR.x = paintViewInsets.left;

paintViewR.y = paintViewInsets.top;

// Use inverted height & width

paintViewR.height = c.getWidth() - (paintViewInsets.left + paintViewInsets.right);

paintViewR.width = c.getHeight() - (paintViewInsets.top + paintViewInsets.bottom);

paintIconR.x = paintIconR.y = paintIconR.width = paintIconR.height = 0;

paintTextR.x = paintTextR.y = paintTextR.width = paintTextR.height = 0;

String clippedText =

layoutCL(label,fm,text,icon,paintViewR,paintIconR,paintTextR);

Graphics2D g2 = (Graphics2D) g;

AffineTransform tr = g2.getTransform();

if (clockwise) {

g2.rotate( Math.PI / 2 );

g2.translate( 0,- c.getWidth() );

} else {

g2.rotate( - Math.PI / 2 );

g2.translate( - c.getHeight(),0 );

}

if (icon != null) {

icon.paintIcon(c,g,paintIconR.x,paintIconR.y);

}

if (text != null) {

int textX = paintTextR.x;

int textY = paintTextR.y + fm.getAscent();

if (label.isEnabled()) {

paintEnabledText(label,clippedText,textX,textY);

} else {

paintDisabledText(label,textY);

}

}

g2.setTransform( tr );

}

}