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...
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。
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...
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 ...
finalize(), Component.paint(java.awt.Graphics), Component.update(java.awt.Graphics), Component.getGraphics(), create() finalize @Deprecated(since="9") public void finalize() Deprecated. The finalize method has been deprecated. Subclasses that override finalize in order to perform cleanup should ...
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 ...
Graphics类在java.awt包中被声明。AWT(Abstract Windows Toolskit)的名称是抽象窗口工具包,是提供窗口及其组件的类库。写字和画图是用Graphics的drawXXX方法实现的。如drawString(String),drawLine(.)等。画图用的坐标系是原点在左上角,纵轴向下以象素为单位的坐标系。