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2¡¢°´×Ö·û¶ÁÈ¡ÎļþÄÚÈÝ
3¡¢°´ÐжÁÈ¡ÎļþÄÚÈÝ
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import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.RandomAccessFile;
import java.io.Reader;
public class ReadfromFile {
/**
   * ÒÔ×Ö½ÚΪµ¥Î»¶ÁÈ¡Îļþ£¬³£ÓÃÓÚ¶Á¶þ½øÖÆÎļþ£¬ÈçͼƬ¡¢ÉùÒô¡¢Ó°ÏñµÈÎļþ¡£
   * @param fileName ÎļþµÄÃû
   */
public static void readFileByBytes(String fileName){
   File file = new File(fileName);
   InputStream in = null;
   try {
    System.out.println("ÒÔ×Ö½ÚΪµ¥Î»¶ÁÈ¡ÎļþÄÚÈÝ£¬Ò»´Î¶ÁÒ»¸ö×Ö½Ú£º");
    // Ò»´Î¶ÁÒ»¸ö×Ö½Ú
    in = new FileInputStream(file);
    int tempbyte;
    while((tempbyte=in.read()) != -1){
     System.out.write(tempbyte);
    }
    in.close();
   } catch (IOException e) {
    e.printStackTrace();
    return;
   }
   try {
    System.out.println("ÒÔ×Ö½ÚΪµ¥Î»¶ÁÈ¡ÎļþÄÚÈÝ£¬Ò»´Î¶Á¶à¸ö×Ö½Ú£º");
    //Ò»´Î¶Á¶à¸ö×Ö½Ú
    byte[] tempbytes = new byte[100];
    int byteread = 0;
    in = new FileInputStream(fileName);
    ReadfromFile.showAvailableBytes(in);
    //¶ÁÈë¶à¸ö×Ö½Úµ½×Ö½ÚÊý×éÖУ¬bytereadΪһ´Î¶ÁÈëµÄ×Ö½ÚÊý
    while ((byteread = in.read(tempbytes)) != -1){
     System.out.write(tempbytes, 0, byteread);
    }
   } catch (Exception e1) {
    e1.printStackTrace();
   } finally {
    if (in != nul


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Compositeģʽ(×éºÏ)
   JavaÉîÈëµ½Ò»¶¨³Ì¶È,¾Í²»¿É±ÜÃâµÄÅöµ½Éè¼ÆģʽÕâÒ»¸ÅÄî,Á˽âÉè¼Æģʽ,½«Ê¹×Ô¼º¶ÔjavaÖеĽӿڻò³éÏóÀàÓ¦ÓÃÓиüÉîµÄÀí½â.Éè¼ÆģʽÔÚjavaµÄÖÐÐÍϵͳÖÐÓ¦Óù㷺,×ñÑ­Ò»¶¨µÄ±à³Ìģʽ,²ÅÄÜʹ×Ô¼ºµÄ´úÂë±ãÓÚÀí½â,Ò×ÓÚ½»Á÷,Composite(×éºÏģʽ)ģʽÊDZȽϳ£ÓõÄÒ»¸öģʽ.
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¡¡¡¡ÀàÐÍ ÃèÊö È¡Öµ·¶Î§
¡¡¡¡Boolean ²¼¶ûÐÍ Ö»ÓÐÁ½¸öÖµt ......

java ÖÐµÄ synchronized

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1) ÔÚij¸ö¶ÔÏóʵÀýÄÚ£¬synchronized method(){}¿ÉÒÔ·ÀÖ¹¶à¸öÏß³Ìͬʱ·ÃÎÊÕâ¸ö¶ÔÏóµÄsynchronized·½·¨£¨Èç¹ûÒ»¸ö¶ÔÏóÓжà¸ösynchronized·½·¨£¬Ö»ÒªÒ»¸öÏ̷߳ÃÎÊÁËÆäÖеÄÒ»¸ösynchronized·½·¨£¬ÆäËüÏ̲߳»ÄÜͬʱ·ÃÎÊÕâ¸ö¶ÔÏóÖÐÈκÎÒ»¸ösynchronized·½·¨£ ......

JavaÊý¾Ý½á¹¹ºÍËã·¨ Õ»Óë¶ÓÁÐ

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package ChapterOne;
public class Stack {
//Õ»Êý×é
long stackArr[];
//Õ»µÄ´óС
int maxSize;
//Õ»µÄ¶¥²¿
int top;
//³õʼ»¯Ò»¸ö´óСΪsizeµÄÕ»
public Stack(int size){
maxSize = size;
stackArr = new long[size];
top = -1;
}
//³öÕ»²Ù×÷
public long pop(){
return sta ......
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