Methods in java.awt.print with parameters of type Graphics Modifier and Type Method Description int Printable.print(Graphics graphics, PageFormat pageFormat, int pageIndex) Prints the page at the specified index into the specified Graphics context in the specified format.Uses...
使用Graphics 第一次绘图 完成后 , 如果在循环中 持续调用 Canvas#repaint() 函数刷新界面 import java.awt.*; public class HelloAWT { public static void main(String[] args) throws InterruptedException { // Frame 默认的布局管理器就是 BorderLayout Frame frame = new Frame("AWT 界面编程"); MyCanvas...
After completing this chapter, you will be able to draw strings, images, and shapes via the Graphics class in your Java programs. We discuss geometry-related classes—Polygon, Rectangle, Point, and Dimension, and the Shape interface—you will see these throughout the remaining AWT objects. You...
解析3:public void paint(Graphics g)里面的g并非java.awt.Graphics,而是Graphics context(图形语义环境)---我也不是很清楚这是什么东东,但api里说到它的功能是允许应用程序在component上画东西显示在不同的设备上的一种环境。所有component的Graphics context都继承了java.awt.Graphics,applet也是Component的子类,故这...
Java-Graphics(画图类) 就比如画一个矩形,你给出矩形左上角坐标,再给出矩形长度和宽度就可以在JFrame上画出来一个矩形 除了矩形之外,还可以画椭圆、圆、圆弧、线段、多边形、图像等 下面给出画矩形的代码 Rect.java importjava.awt.Color;importjava.awt.Graphics;importjavax.swing.JPanel;publicclassRectextendsJ...
importjava.awt.Graphics;@OverrideprotectedvoidpaintComponent(Graphicsg){super.paintComponent(g);// 图片绘制的代码将在后续步骤中添加} 1. 2. 3. 4. 5. 6. 7. 步骤4:在paintComponent方法中加载图片 在paintComponent方法中,你需要加载你想要显示的图片。你可以使用Toolkit类的getImage方法来加载图片。
Uses of Class java.awt.GraphicsEnvironment Packages that useGraphicsEnvironment 软件包描述 java.awt 包含用于创建用户界面和绘制图形和图像的所有类。 Uses ofGraphicsEnvironmentinjava.awt Methods injava.awtthat returnGraphicsEnvironment 变量和类型方法描述 ...
The Java 2D API is powerful and complex. However, the vast majority of uses for the Java 2D API utilize a small subset of its capabilities encapsulated in thejava.awt.Graphicsclass. This lesson covers the most common needs of applications developers. Less common needs are described later in ...
这个问题在外网也有一些讨论,我倾向的说法是,XP的GDI+组件存在问题,对于像素格式PixelFormat有点特别的图像,把它绘制到其它地方的时候处理不好ImageAttributes,于是引发异常。
java.lang.Object java.awt.GraphicsDevice public abstract class GraphicsDevice extends ObjectGraphicsDevice类描述了特定图形环境中可用的图形设备。这些包括屏幕和打印机设备。请注意,在GraphicsEnvironment的实例中可以有许多屏幕和许多打印机。每个图形设备都有一个或多个与之关联的GraphicsConfiguration对象。