Java 重新绘制JButton

最新推荐文章于 2023-06-12 21:00:59 发布
最新推荐文章于 2023-06-12 21:00:59 发布
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本文链接：https://blog.youkuaiyun.com/Gaowen_HAN/article/details/8164722
本文介绍了如何在Java中自定义JButton的绘制，包括正常、焦点、按下和释放状态，并提供了添加背景图片和使用Nimbus包定制Look and Feel的方法。通过Painter保持按钮的HTML特性，同时展示了代码优化后的实现。

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使用paintComponent()方法绘制的各种Button：

正常状态：


获得焦点状态：


被按下状态：


被释放状态：


实现代码：

package com.han;

import java.awt.Color;
import java.awt.Container;
import java.awt.Dimension;
import java.awt.FlowLayout;
import java.awt.Font;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.RadialGradientPaint;
import java.awt.RenderingHints;
import java.awt.Shape;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.awt.font.LineMetrics;
import java.awt.geom.Ellipse2D;
import java.awt.geom.Point2D;
import java.awt.geom.Rectangle2D;
import java.awt.geom.RoundRectangle2D;
import java.awt.image.BufferedImage;
import java.io.IOException;

import javax.imageio.ImageIO;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.UIManager;
import javax.swing.UIManager.LookAndFeelInfo;
import javax.swing.UnsupportedLookAndFeelException;

@SuppressWarnings("serial")
public class JButton_Bg extends JFrame {

	public JButton_Bg() {
		for (LookAndFeelInfo laf : UIManager.getInstalledLookAndFeels()) {
			if (laf.getName().equals("Nimbus")) {
				try {
					UIManager.setLookAndFeel(laf.getClassName());
				} catch (ClassNotFoundException | InstantiationException
						| IllegalAccessException
						| UnsupportedLookAndFeelException e) {
					// TODO Auto-generated catch block
					e.printStackTrace();
				}
			}
		}
		// TODO Auto-generated constructor stub
		Container c = getContentPane();
		c.setLayout(new FlowLayout());

		final JButton button = new MyButton("button 2");

		c.add(button);
		JButton button2 = new JButton("button 2");
		c.add(button2);
		button2.setBackground(Color.blue);

		JButton button3 = new MyButton2("Cancel");
		c.add(button3);

		// 完全重绘的Button，其Text的HTML设置特性消失
		// JButton button4 = new
		// MyButton3("<html><font size=12>Sub</font></html>");
		JButton button4 = new MyButton3("Sub");
		// button4.setFont(new Font("Serif", Font.PLAIN, 14));
		c.add(button4);
	}

	private class MyButton extends JButton {
		private String text;
		private String state = "normal";
		// private String state = "focused";
		// private String state = "pressed";
		// private String state = "released";

		Shape shape;

		// 无参构造继承时自动调用，而有参构造继承时则需手动重写
		MyButton(String text) {
			// super("<html><font size=5>" + text + "</font></html>");
			super(text);
			this.text = text;

			// 下 面的代码块若是放到下面的paintComponent()方法里则Swing界面初始化时，
			// 布局管理器还是采用的是系统默认的PreferredSize。因为构造函数要优先于
			// paintComponent()方法执行。
			Dimension preferredSize = getPreferredSize();
			Dimension preferredSizeNew = new Dimension(preferredSize.width,
					preferredSize.width);
			setPreferredSize(preferredSizeNew);
		}

		@Override
		protected void paintComponent(Graphics g) {
			Graphics2D g2 = (Graphics2D) g;
			g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
					RenderingHints.VALUE_ANTIALIAS_ON);

			int width = this.getPreferredSize().width;
			int height = this.getPreferredSize().height;

			if (state.equals("normal")) {
				// draw background pattern
				Point2D center = new Point2D.Float(width / 2, height / 2);
				float radius = height / 2;
				float[] dist = { 0.0f, 1.0f };
				Color[] colors = { new Color(0, 0, 0, 255),
						new Color(255, 255, 255, 0) };
				RadialGradientPaint paint = new RadialGradientPaint(center,
						radius, dist, colors);
				g2.setPaint(paint);
				shape = new Ellipse2D.Double(width / 2 - height / 2, 0, height,
						height);
				g2.fill(shape);
				// draw string text
				g2.setColor(Color.RED);
				Font defaultFont = getFont();
				g2.setFont(defaultFont);
				Rectangle2D rect = defaultFont.getStringBounds(text,
						g2.getFontRenderContext());
				LineMetrics lineMetrics = defaultFont.getLineMetrics(text,
						g2.getFontRenderContext());
				g2.drawString(
						text,
						(float) (width / 2 - rect.getWidth() / 2),
						(float) ((height / 2) + ((lineMetrics.getAscent() + lineMetrics
								.getDescent()) / 2 - lineMetrics.getDescent())));

			} else if (state.equals("focused")) {
				// draw background pattern
				Point2D center = new Point2D.Float(width / 2, height / 2);
				float radius = height / 2;
				float[] dist = { 0.2f, 1.0f };
				Color[] colors = { new Color(0, 0, 0, 255),
						new Color(255, 255, 255, 0) };
				RadialGradientPaint paint = new RadialGradientPaint(center,
						radius, dist, colors);
				g2.setPaint(paint);
				g2.fill(new Ellipse2D.Double(width / 2 - height / 2, 0, height,
						height));
				// draw string text
				g2.setColor(Color.RED);
				Font defaultFont = getFont();
				g2.setFont(defaultFont);
				Rectangle2D rect = defaultFont.getStringBounds(text,
						g2.getFontRenderContext());
				LineMetrics lineMetrics = defaultFont.getLineMetrics(text,
						g2.getFontRenderContext());
				g2.drawString(
						text,
						(float) (width / 2 - rect.getWidth() / 2),
						(float) ((height / 2) + ((lineMetrics.getAscent() + lineMetrics
								.getDescent()) / 2 - lineMetrics.getDescent())));
			} else if (state.equals("pressed")) {
				// draw background pattern
				int offsetCenter = 1;
				Point2D center = new Point2D.Float(width / 2 + offsetCenter,
						height / 2 + offsetCenter);
				float radius = height / 2;
				float[] dist = { 0.2f, 1.0f };
				Color[] colors = { new Color(0, 0, 0, 255),
						new Color(255, 255, 255, 0) };
				RadialGradientPaint paint = new RadialGradientPaint(center,
						radius, dist, colors);
				g2.setPaint(paint);
				g2.fill(new Ellipse2D.Double(width / 2 - height / 2
						+ offsetCenter, offsetCenter, height, height));
				// draw string text
				g2.setColor(Color.RED);
				Font defaultFont = getFont();
				g2.setFont(defaultFont);
				Rectangle2D rect = defaultFont.getStringBounds(text,
						g2.getFontRenderContext());
				LineMetrics lineMetrics = defaultFont.getLineMetrics(text,
						g2.getFontRenderContext());
				g2.drawString(
						text,
						(float) (width / 2 - rect.getWidth() / 2)
								+ offsetCenter,
						(float) ((height / 2) + ((lineMetrics.getAscent() + lineMetrics
								.getDescent()) / 2 - lineMetrics.getDescent()))
								+ offsetCenter);
			} else if (state.equals("released")) {
				// draw background pattern
				Point2D center = new Point2D.Float(width / 2, height / 2);
				float radius = height / 2;
				float[] dist = { 0.2f, 1.0f };
				Color[] colors = { new Color(0, 0, 0, 255),
						new Color(255, 255, 255, 0) };
				RadialGradientPaint paint = new RadialGradientPaint(center,
						radius, dist, colors);
				g2.setPaint(paint);
				g2.fill(new Ellipse2D.Double(width / 2 - height / 2, 0, height,
						height));
				// draw string text
				g2.setColor(Color.RED);
				Font defaultFont = getFont();
				g2.setFont(defaultFont);
				Rectangle2D rect = defaultFont.getStringBounds(text,
						g2.getFontRenderContext());
				LineMetrics lineMetrics = defaultFont.getLineMetrics(text,
						g2.getFontRenderContext());
				g2.drawString(
						text,
						(float) (width / 2 - rect.getWidth() / 2),
						(float) ((height / 2) + ((lineMetrics.getAscent() + lineMetrics
								.getDescent()) / 2 - lineMetrics.getDescent())));
			}

			addMouseListener(new MouseAdapter() {

				@Override
				public void mouseEntered(MouseEvent e) {
					// TODO Auto-generated method stub
					System.out.println("光标移入组件");
					state = "focused";
					repaint();
				}

				@Override
				public void mouseExited(MouseEvent e) {
					// TODO Auto-generated method stub
					System.out.println("光标移出组件");
					state = "normal";
					repaint();
				}

				@Override
				public void mousePressed(MouseEvent e) {
					// TODO Auto-generated method stub
					System.out.print("鼠标按键被按下，");
					state = "pressed";
					repaint();
				}

				@Override
				public void mouseReleased(MouseEvent e) {
					// TODO Auto-generated method stub
					System.out.print("鼠标按键被释放，");
					state = "released";
					repaint();
				}

			});

		}

		// Gives the UI delegate an opportunity to define the precise shape of
		// this component for the sake of mouse processing.
		@Override
		public boolean contains(int x, int y) {
			if (shape.contains(x, y)) {
				return true;
			} else {
				return false;
			}
		}
	}

	private class MyButton2 extends JButton {
		private String text;
		private String state = "normal";
		// private String state = "focused";
		// private String state = "pressed";
		// private String state = "released";
		
		Shape shape;

		// Initialize the size of the button according to the length and width
		// of the text string
		MyButton2(String text) {
			super(text);
			this.text = text;
		}

		@Override
		protected void paintComponent(Graphics g) {
			Graphics2D g2 = (Graphics2D) g;
			g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
					RenderingHints.VALUE_ANTIALIAS_ON);
			int width = this.getWidth();
			int height = this.getHeight();

			if (state.equals("normal")) {
				// draw background pattern
				Point2D center = new Point2D.Float(width / 2, height / 2);
				float radius = width / 2;
				float[] dist = { 0.0f, 0.8f };
				Color[] colors = { new Color(255, 255, 255, 0),
						new Color(0, 0, 0, 255) };
				RadialGradientPaint paint = new RadialGradientPaint(center,
						radius, dist, colors);
				g2.setPaint(paint);
				shape = new RoundRectangle2D.Double(0, 0, width, height,
						height, height);
				g2.fill(shape);
				// draw string text
				Font defaultFont = getFont();
				g2.setFont(defaultFont);
				g2.setColor(Color.BLACK);
				Rectangle2D rect = defaultFont.getStringBounds(text,
						g2.getFontRenderContext());
				LineMetrics lineMetrics = defaultFont.getLineMetrics(text,
						g2.getFontRenderContext());
				g2.drawString(
						text,
						(float) (width / 2 - rect.getWidth() / 2),
						(float) ((height / 2) + ((lineMetrics.getAscent() + lineMetrics
								.getDescent()) / 2 - lineMetrics.getDescent())));
			} else if (state.equals("focused")) {
				// draw background pattern
				Point2D center = new Point2D.Float(width / 2, height / 2);
				float radius = width / 2;
				float[] dist = { 0.0f, 0.8f };
				Color[] colors = { new Color(255, 255, 255, 0),
						new Color(20, 20, 20, 255) };
				RadialGradientPaint paint = new RadialGradientPaint(center,
						radius, dist, colors);
				g2.setPaint(paint);
				g2.fill(new RoundRectangle2D.Double(0, 0, width, height,
						height, height));
				// draw string text
				Font defaultFont = getFont();
				g2.setFont(defaultFont);
				g2.setColor(Color.BLACK);
				Rectangle2D rect = defaultFont.getStringBounds(text,
						g2.getFontRenderContext());
				LineMetrics lineMetrics = defaultFont.getLineMetrics(text,
						g2.getFontRenderContext());
				g2.drawString(
						text,
						(float) (width / 2 - rect.getWidth() / 2),
						(float) ((height / 2) + ((lineMetrics.getAscent() + lineMetrics
								.getDescent()) / 2 - lineMetrics.getDescent())));
			} else if (state.equals("pressed")) {
				Point2D center = new Point2D.Float(width / 2, height / 2);
				float radius = width / 2;
				float[] dist = { 0.0f, 1.0f };
				Color[] colors = { new Color(255, 255, 255, 0),
						new Color(20, 20, 20, 255) };
				RadialGradientPaint paint = new RadialGradientPaint(center,
						radius, dist, colors);
				g2.setPaint(paint);
				g2.fill(new RoundRectangle2D.Double(0, 0, width, height,
						height, height));
				// draw string text
				Font defaultFont = getFont();
				g2.setFont(defaultFont);
				g2.setColor(Color.BLACK);
				Rectangle2D rect = defaultFont.getStringBounds(text,
						g2.getFontRenderContext());
				LineMetrics lineMetrics = defaultFont.getLineMetrics(text,
						g2.getFontRenderContext());
				g2.drawString(
						text,
						(float) (width / 2 - rect.getWidth() / 2),
						(float) ((height / 2) + ((lineMetrics.getAscent() + lineMetrics
								.getDescent()) / 2 - lineMetrics.getDescent())));
			} else if (state.equals("released")) {
				Point2D center = new Point2D.Float(width / 2, height / 2);
				float radius = width / 2;
				float[] dist = { 0.0f, 0.8f };
				Color[] colors = { new Color(255, 255, 255, 0),
						new Color(20, 20, 20, 255) };
				RadialGradientPaint paint = new RadialGradientPaint(center,
						radius, dist, colors);
				g2.setPaint(paint);
				g2.fill(new RoundRectangle2D.Double(0, 0, width, height,
						height, height));
				// draw string text
				Font defaultFont = getFont();
				g2.setFont(defaultFont);
				g2.setColor(Color.BLACK);
				Rectangle2D rect = defaultFont.getStringBounds(text,
						g2.getFontRenderContext());
				LineMetrics lineMetrics = defaultFont.getLineMetrics(text,
						g2.getFontRenderContext());
				g2.drawString(
						text,
						(float) (width / 2 - rect.getWidth() / 2),
						(float) ((height / 2) + ((lineMetrics.getAscent() + lineMetrics
								.getDescent()) / 2 - lineMetrics.getDescent())));
			}

			addMouseListener(new MouseAdapter() {

				@Override
				public void mouseEntered(MouseEvent e) {
					// TODO Auto-generated method stub
					System.out.println("光标移入组件");
					state = "focused";
					repaint();
				}

				@Override
				public void mouseExited(MouseEvent e) {
					// TODO Auto-generated method stub
					System.out.println("光标移出组件");
					state = "normal";
					repaint();
				}

				@Override
				public void mousePressed(MouseEvent e) {
					// TODO Auto-generated method stub
					System.out.print("鼠标按键被按下，");
					state = "pressed";
					repaint();
				}

				@Override
				public void mouseReleased(MouseEvent e) {
					// TODO Auto-generated method stub
					System.out.print("鼠标按键被释放，");
					state = "released";
					repaint();
				}

			});

		}
		
		@Override
		public boolean contains(int x, int y) {
			if (shape.contains(x, y)) {
				return true;
			} else {
				return false;
			}
		}
	}

	private class MyButton3 extends JButton {
		private String text;
		private String state = "normal";

		// private String state = "focused";
		// private String state = "pressed";
		// private String state = "released";

		Shape shape;
		
		// Initialize the size of the button according to the length and width
		// of the text string
		MyButton3(String text) {
			super(text);
			this.text = text;
		}

		@Override
		protected void paintComponent(Graphics g) {
			Graphics2D g2 = (Graphics2D) g;
			g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
					RenderingHints.VALUE_ANTIALIAS_ON);
			int width = this.getWidth();
			int height = this.getHeight();

			if (state.equals("normal")) {
				Point2D center = new Point2D.Float(width / 2, height / 2);
				float radius = width / 2;
				float[] dist = { 0.0f, 0.8f };
				Color[] colors = { new Color(255, 255, 255, 0),
						new Color(0, 0, 0, 255) };
				RadialGradientPaint paint = new RadialGradientPaint(center,
						radius, dist, colors);
				g2.setPaint(paint);
				shape = new RoundRectangle2D.Double(0, 0, width, height,
						height, height);
				g2.fill(shape);
				// draw string text
				Font defaultFont = getFont();
				g2.setFont(defaultFont);
				g2.setColor(Color.BLACK);
				Rectangle2D rect = defaultFont.getStringBounds(text,
						g2.getFontRenderContext());
				LineMetrics lineMetrics = defaultFont.getLineMetrics(text,
						g2.getFontRenderContext());
				g2.drawString(
						text,
						(float) (width / 2 - rect.getWidth() / 2),
						(float) ((height / 2) + ((lineMetrics.getAscent() + lineMetrics
								.getDescent()) / 2 - lineMetrics.getDescent())));
			} else if (state.equals("focused")) {
				Point2D center = new Point2D.Float(width / 2, height / 2);
				float radius = width / 2;
				float[] dist = { 0.0f, 0.8f };
				Color[] colors = { new Color(255, 255, 255, 0),
						new Color(20, 20, 20, 255) };
				RadialGradientPaint paint = new RadialGradientPaint(center,
						radius, dist, colors);
				g2.setPaint(paint);
				g2.fill(new RoundRectangle2D.Double(0, 0, width, height,
						height, height));
				// draw string text
				Font defaultFont = getFont();
				g2.setFont(defaultFont);
				g2.setColor(Color.BLACK);
				Rectangle2D rect = defaultFont.getStringBounds(text,
						g2.getFontRenderContext());
				LineMetrics lineMetrics = defaultFont.getLineMetrics(text,
						g2.getFontRenderContext());
				g2.drawString(
						text,
						(float) (width / 2 - rect.getWidth() / 2),
						(float) ((height / 2) + ((lineMetrics.getAscent() + lineMetrics
								.getDescent()) / 2 - lineMetrics.getDescent())));
			} else if (state.equals("pressed")) {
				g2.setColor(new Color(0, 147, 255));
				g2.fill(new RoundRectangle2D.Double(0, 0, width, height,
						height, height));
				Point2D center = new Point2D.Float(width / 2, height / 2);
				float radius = width / 2;
				float[] dist = { 0.0f, 1.0f };
				Color[] colors = { new Color(255, 255, 255, 0),
						new Color(20, 20, 20, 255) };
				RadialGradientPaint paint = new RadialGradientPaint(center,
						radius, dist, colors);
				g2.setPaint(paint);
				double borderWidth = 2.0f; // 2 pixels
				g2.fill(new RoundRectangle2D.Double(borderWidth, borderWidth,
						width - borderWidth * 2.0f,
						height - borderWidth * 2.0f, height - borderWidth
								* 2.0f, height - borderWidth * 2.0f));
				// draw string text
				Font defaultFont = getFont();
				g2.setFont(defaultFont);
				g2.setColor(Color.BLACK);
				Rectangle2D rect = defaultFont.getStringBounds(text,
						g2.getFontRenderContext());
				LineMetrics lineMetrics = defaultFont.getLineMetrics(text,
						g2.getFontRenderContext());
				g2.drawString(
						text,
						(float) (width / 2 - rect.getWidth() / 2),
						(float) ((height / 2) + ((lineMetrics.getAscent() + lineMetrics
								.getDescent()) / 2 - lineMetrics.getDescent())));
			} else if (state.equals("released")) {
				Point2D center = new Point2D.Float(width / 2, height / 2);
				float radius = width / 2;
				float[] dist = { 0.0f, 0.8f };
				Color[] colors = { new Color(255, 255, 255, 0),
						new Color(20, 20, 20, 255) };
				RadialGradientPaint paint = new RadialGradientPaint(center,
						radius, dist, colors);
				g2.setPaint(paint);
				g2.fill(new RoundRectangle2D.Double(0, 0, width, height,
						height, height));
				// draw string text
				Font defaultFont = getFont();
				g2.setFont(defaultFont);
				g2.setColor(Color.BLACK);
				Rectangle2D rect = defaultFont.getStringBounds(text,
						g2.getFontRenderContext());
				LineMetrics lineMetrics = defaultFont.getLineMetrics(text,
						g2.getFontRenderContext());
				g2.drawString(
						text,
						(f
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02-17 101
首先,你应该覆盖paintComponent()而不是paint().在进行一些面板定制时,它是Swing最佳实践的一部分.其次,这是适合我的代码(我不知道为什么你的代码不是：S)：public class Main {public static void main(String[] args) {JFrame frame = new JFrame("frame");frame.setSize(4...
java 绘制按钮_Java 重新绘制JButton
weixin_39923110的博客
02-16 253
packagecom.han;importjava.awt.Color;importjava.awt.Container;importjava.awt.Dimension;importjava.awt.FlowLayout;importjava.awt.Font;importjava.awt.Graphics;importjava.awt.Graphics2D;importjava.awt.Rad...
Java Swing JButton按钮的实现示例
08-25
Java Swing JButton 按钮的实现示例 Java Swing JButton 按钮是 Java 中最常用的 GUI 组件之一，用于在用户界面中提供交互方式。JButton 按钮可以根据需要自定义外观和行为，下面将对 JButton 按钮的实现示例进行...
Java——jbutton
11-17
在Java编程中，`JButton`是Swing库中用于创建用户界面的一个重要组件。它是一个图形化元素，用户可以通过点击来触发特定的事件或操作。`JButton`通常与事件监听器（如`ActionListener`）结合使用，以响应用户的交互...
小浩浅谈Java图形绘制
weixin_64625868的博客
01-05 360
1. package Cl.Adraw; import javax.swing.*; import java.awt.*; public class Drawui { //1.绘制界面 public void intUI(){ JFrame jf=new JFrame(); //设立主窗体大小 jf.setSize(900,900); //设置窗体名称 jf.setTitle("绘画工具"); .
对按钮重新绘制
熊哥的专栏
10-07 577
     Private Sub Button2_Paint()Sub Button2_Paint(ByVal sender As Object, ByVal e As System.Windows.Forms.PaintEventArgs) Handles Button2.Paint        Dim MyGp As New System.Drawing.Drawing2D.Grap
Java中的重绘
weixin_65240122的博客
06-12 355
重绘
java重写jbutton
10-16
java 中重写jbutton，改变按钮特点，写出自己想要的按钮
java 绘制按钮_Java绘制自定义按钮
weixin_39958025的博客
02-16 606
public class Test01 {public static void main(String args[]) {JFrame frame = new JFrame();frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);frame.setSize(300,300);JPanel panel = new JPanel();JButton...
java 重写jbutton_Java如何自定义JButton图标？
weixin_39562089的博客
02-25 221
下面的示例向您展示了如何自定义JButton摇摆组件的图标。packageorg.nhooo.example.swing;importjavax.swing.*;importjava.awt.*;publicclassJButtonCustomIconextendsJFrame{publicJButtonCustomIcon()throwsHeadlessException...
JAVA按钮编程_java-制作按钮
weixin_42696333的博客
02-15 546
我在这里为我的游戏制作菜单,可以按“开始”按钮在屏幕上导航.我正在尝试为该类实现一个单独的按钮,但是按照我布置CustomButtons类的方式,它只能以一个具有功能的按钮来工作,为了解决此问题,我决定制作一个单独的“按钮”方法,其中包含按钮的参数.我在绘画组件中调用了此控件,以确保将其显示在屏幕上,但是仅将文本“ START”显示在屏幕上.按钮的背景颜色,边框,字体等不会随调用而改变.publi...
Java: 绘制出来的专业级别的按钮
ltx06的专栏
06-04 723
转自： import javax.swing.*; import java.awt.*; import java.awt.event.*; import java.awt.geom.Point2D; public class VectorButton extends JButton implements MouseListener {     private
java重新绘制_Java中的repaint()不会立即“重新绘制”？
weixin_27066963的博客
03-02 349
我有这样的代码：// In MyPanel.javapublic void paintComponent(Graphics g){super.paintComponent(g);// Draw somethingmypanel_count++;}// In Test.javapublic void testLargeData(){while (notDone){panel.repaint();//...
java 图形按钮_java如何制作图片一样形状的按钮
weixin_28685045的博客
02-12 330
展开全部importjava.net.URL;importjavax.swing.ImageIcon;importjavax.swing.JButton;importjavax.swing.JFrame;importjavax.swing.JPanel;publicclassanniuextendsJFrame{publicstaticvoidmain(Stringar...
JAVA Swing——设置JButton按钮样式
热门推荐
无限迭代中......
11-23 1万+
1、对JButton大小的设置 因为JButen是属于小器件类型的，所以一般的setSize不能对其惊醒大小的设置，所以一般我们用 button.setPreferredSize(new Dimension(30,30)); //（30，30） 是你要设置按钮的大小 2、对JButton透明的设置 按钮设置为透明，这样就不会挡着后面的背景 button.setContentAreaFi...
记录下java swing 的JButton图标来源及设置效果
爱的叹息的专栏
04-04 768
苦于JButton只有文字没有图标，显得不好看，好多前端都有很好的图标可，决定给JButton也找一些好看的但是JButton只支持jpeg . png . gif 三种. png只有在1.3以后支持..不过现在基本上都是1.4.2以后的 所以没问题.
Java Swing：JButton详解与图形界面设计
在Java图形用户界面设计中，JButton是关键的一个组件，它在构建用户交互界面时扮演着重要角色。JButton是Swing库中的一个类，用于创建带有文本和/或图标按钮。它的构造函数主要有四种： 1. JButton()：用于创建一个...
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