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IrregularFormSample.java
import java.awt.Graphics;
import java.awt.Image;
import java.awt.MediaTracker;
import java.awt.Point;
import java.awt.Rectangle;
import java.awt.Shape;
import java.awt.Toolkit;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.awt.event.MouseMotionAdapter;
import java.awt.geom.Area;
import java.awt.image.PixelGrabber;
import java.io.IOException;
import java.util.ArrayList;
import javax.swing.JFrame;
import com.sun.awt.AWTUtilities;
/**
* ²»¹æÔò´°ÌåʾÀý
* @author Hexen
*/
public class IrregularFormSample extends JFrame {
private static final long serialVersionUID = 1L;
private Point origin; //ÓÃÓÚÒÆ¶¯´°Ìå
private Image img; //ÓÃÀ´É趨´°Ìå²»¹æÔòÑùʽµÄͼƬ
public IrregularFormSample() {
super();

/* Ê×Ïȳõʼ»¯Ò»ÕÅͼƬ£¬ÎÒÃÇ¿ÉÒÔÑ¡ÔñÒ»ÕÅÓÐ͸Ã÷²¿·ÖµÄ²»¹æÔòͼƬ
* (µ±È»ÎÒÃÇҪѡÔñÖ§³ÖAlpha(͸Ã÷)²ãµÄͼƬ¸ñʽ£¬ÈçPNG)£¬ÕâÕÅ
* ͼƬ½«±»ÓÃÀ´Éú³ÉÓëÆäÐÎ×´ÏàͬµÄ²»¹æÔò´°Ìå
*/
MediaTracker mt=new MediaTracker(this);
img=Toolkit.getDefaultToolkit().createImage("remi.p


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package com.yzy;
import java.util.regex.*;
public class Test {
 /**
  * @param args
  */
 public static void main(String[] args) {
  Pattern p=Pattern.compile("^[a-z]+");
  Matcher m=p.matcher("a233"); //true
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import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.io.FileWriter;
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