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package arrays.myArray;
public class MyArrayList {
 private Object[] arrObj = new Object[3];
 private int size = 0;
 
 // ³¤¶È
 public int size() {
  return size;
 }
 // insert
 public void add(Object obj) {
  add(size,obj);
 }
 // update
 // °ÑÇ°ÃæµÄÍùºóÒƶ¯
 public void add(int index, Object obj) {
  if(size==arrObj.length){
   Object[] temp=new Object[size*2];
   for(int i=0;i<arrObj.length;i++){
    temp[i]=arrObj[i];
   }
   arrObj=temp;
  }
  //´ÓÇ°Íùºó
  for (int i =size; i>index ; i--) {
   arrObj[i] = arrObj[i-1];
  }
  arrObj[index]=obj;
  size++;
 }
 // delete
 // °ÑºóÃæµÄÍùÇ°Òƶ¯
 public void remove(int index) {
  size--;
  for (int i =index;i<size; i++) {
   arrObj[i] = arrObj[i+1];
  }
 }
 public Object get(int index) {
  return arrObj[index];
 }
}


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java Annotation Æ´×°SQLÓï¾ä

ÉùÃ÷×Ö¶ÎÓ³Éä
@Target(ElementType.FIELD)  
@Retention(RetentionPolicy.RUNTIME) 
public @interface FiledRef
{
    String fieldName();
}
ÉùÃ÷±íÓ³Éä
@Target(ElementType.TYPE)  
@Retention(RetentionPolicy.RUNTIME)
public @interface TableRef
{
 & ......

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¡¡¡¡1 MySQL´æ´¢´óÈÝÁ¿µÄ¶þ½øÖÆÎļþµÄ¸ñʽÊÇblob£¬Æäʵ³ýÁËͼƬ»¹¿ÉÒÔ´æ±ðµÄ
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¡¡¡¡·Ï»°¾Í²»¶à˵ÁË£¬´ó¼Ò¿´¿´´úÂëºÜÈÝÒ×Ã÷°×£¬ÏÈÀ´¿´Ò»¸öapp³ÌÐò£¬µ±È»Ê×ÏÈÄúÒªÔÚÊý¾Ý¿âÖÐÏȽ¨Á¢Ò»¸öÓÃÓÚ±£´æͼƬµÄ±íºÍÏàÓ¦µÄÁУ¬Êý¾Ý¸ñʽΪblob
¡¡¡¡  package ......

Java Class Version Ñо¿



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ÎÒÃÇÔÚ³¢ÏÊ JDK1.5 µÄʱºò£¬ÏàÐŲ»ÉÙÈËÓöµ½¹ý Unsupported major.minor version 49.0
´íÎ󣬵±Ê±¶¨»áãȻ²»ÖªËù´ë¡£ÒòΪ¸Õ¿ªÊ¼ÄÇ»á¶ù£¬ÍøÉÏÓë´ËÏà¹ØµÄÖÐÎÄ×ÊÁÏ»¹²»¶à£¬ÏÖÔÚºÃÁË£¬ÍøÉÏÒ»ÕÒ¾ÍÖªµÀÊÇÈçºÎ½â¾ö£¬´ó¶à»á¸æËßÄãҪʹÓà JDK
1.4 ÖØбàÒë¡£ÄÇôÖÁÓÚΪʲô£ ......

java£º¶þ·Ö²éÕÒ·¨

package arrays.compara;
/**
 *
 * @author Happy ¶þ·Ö²éÕÒ·¨
 */
public class BinarySearch {
 public static void main(String[] args) {
  int[] arrInt = { 2, 34, 32, 24, 23, 34, 12, 3, 4, 2 };
  int index = bSearch(29, arrInt, 0, arrInt.length);
 & ......

java£º¾­µäÎļþдÈëºÍ¶ÁÈ¡£¬Ëٶȳ¬¿ì

package arrays.file;
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.FileReader;
import java.io.IOException;
import java.io.InputStreamRea ......
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