1在Applet中写字和画图 要创建一个Applet,必须让自己的类从java.allpet.Applet类继承即可。Applet类是一个抽象类,它提供了五个抽象方法,它们是: init( )applet初始化,在applet首次创建时执行。 start()applet开始正常运作。在每次applet画面在浏览器窗口中可见时调用,也在init()后调用。 stop( )停止运作。每当app...
Java_1.java文件源程序: import java.applet.*; //引入Applet类 import java.awt.Graphics: //引入Graphics类 public class Java_1 extends___ public void paint(___g) g.drawString("欢迎你参加Java考试!",25,25); Java_1.html文件源程序: <html><applet code=Java_1.class width=300 height=30><...
Java Applet中的`paint()`方法主要负责绘制组件,其参数类型明确为`Graphics`类。虽然在实际运行时,该参数可能是`Graphics2D`(`Graphics`的子类),但方法声明中的参数类型始终是`Graphics`。其他选项分析如下: - **选项A(Graphics)**:正确,`paint()`方法的官方定义为`public void paint(Graphics g)`。 - **选项...
java appletrobot manipulatorJava becomes one of the most acceptable programming languages in the Internet because of the characteristics of distribution, object-orientation, interpretation, and independence of computer platform. An application code programmed in Java can be downloaded and run in any ...
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.applet.Applet; importjava.awt.*; importjava.awt.event.*; publicclassCreateTestextendsApplet{ privateImageimage; publicvoidinit(){ image=getImage(getCodeBase(),"lena.jpg"); try{ MediaTrackermt=newMediaTracker(this); mt.addImage(image,0); ...
正确答案:1.Applet2.drawstring解析:在Java语言中,每一个小应用程序[1](Applet)都必须是Ap- plet的子类[2],所以Java_1类应该继承自Applet类,第一处应填入“Applet”;Graphics类的public abstract void drawstring(String str,int x,int y)用于显示字符串,所以第二处应填入“drawstring”。简单应用题(40分)反馈...
Note: If you don't see the applet running, you need to install at least the Java SE Development Kit (JDK) 7 release. Composite.java. contains the full code for this applet. A new AlphaComposite object ac is constructed by calling AlphaComposite.getInstance and specifying the desired compositin...
After calling this method for such a font, it is available to be used in constructing new Fonts by name or family name, and is enumerated by getAvailableFontFamilyNames() and getAllFonts() within the execution context of this application or applet. This means applets cannot register fonts ...
* The following code generates the display shown in Figure 2-2.import java.awt.*; public class xor extends java.applet.Applet { public void init () { setBackground (Color.red); } public void paint (Graphics g) { g.setColor (Color.green); g.setXORMode (Color.blue); g.fillRect (...