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JSwiff 是一款開源的，基于Java的操作Macromedia Flash file 的框架，可以創建，和操作Flash文件。JSwiff 還提供了JSwiff Investigator，可以直接分析現有的SWF文件的結構，得到Tag層次的信息..

其他不多說，喜歡的人自己可以到該網站去了解，下面我就拿出一個例子來。呵~~從官方那邊修改過來的，我就不多做解釋了（呵~人家說得很明白啦，雖然有點煩瑣）

Java的Flash類庫(JSwiff)用法

import java.io.FileOutputStream;
import java.io.IOException;
import com.jswiff.SWFWriter;
import com.jswiff.SWFDocument;
import com.jswiff.swfrecords.Rect;
import com.jswiff.swfrecords.RGBA;
import com.jswiff.swfrecords.Matrix;
import com.jswiff.swfrecords.tags.DefineFont2;
import com.jswiff.swfrecords.tags.DefineEditText;
import com.jswiff.swfrecords.tags.PlaceObject2;
import com.jswiff.swfrecords.tags.ShowFrame;
public class CreateSwf
{
public static void main(String[] args)
{
  String fileName = "test.swf";
  SWFDocument document = new SWFDocument();
  // first we define a font for the text
  // get a character ID for the font
  int fontId = document.getNewCharacterId();
  // use a standard font (e.g. Arial), we don't want to define shapes for each glyph
  DefineFont2 defineFont2 = new DefineFont2(fontId, "Arial", null, null);
  document.addTag(defineFont2);
  // get a character ID for our text
  int textId = document.getNewCharacterId();
  // dynamic text is a good way to go, we use DefineEditText for this
  // we don't care about bounds and variables
  DefineEditText defineEditText = new DefineEditText(
textId, new Rect(0, 0, 0, 0), null);
  // we have set the text bounds to a zero rectangle;
  // to see the whole text, we set the autosize flag
  defineEditText.setAutoSize(true);
  // assign the font defined above to the text, set font size to 24 px (in twips!)
  defineEditText.setFont(fontId, 20 * 24);
  // set text color to red
  defineEditText.setTextColor(new RGBA(255, 0, 0, 255));
  // don't let viewers mess around with our text
  defineEditText.setReadOnly(true);
  // finally set the text
  defineEditText.setInitialText("棄天笑(soda) test!");
  document.addTag(defineEditText);
  // place our text at depth 1
  PlaceObject2 placeObject2 = new PlaceObject2(1);
  placeObject2.setCharacterId(textId);
  // place text at position (45; 10) (in twips!)
  placeObject2.setMatrix(new Matrix(20 * 45, 20 * 10));
  document.addTag(placeObject2); // place text
  document.addTag(new ShowFrame()); // show frame
  try
  {
writeDocument(document, fileName);
  }
  catch (IOException e)
  {
System.out.println("An error occured while writing " + fileName + ":");
e.printStackTrace();
  }
}
private static void writeDocument(SWFDocument document, String fileName)
  throws IOException
{
  SWFWriter writer = new SWFWriter(document, new FileOutputStream(fileName));
  writer.write();
}
}