Ò׽ؽØÍ¼Èí¼þ¡¢µ¥Îļþ¡¢Ãâ°²×°¡¢´¿ÂÌÉ«¡¢½ö160KB

Java·ÃÎÊȨÏÞdzÎö

 Java·ÃÎÊȨÏÞÒ»¹²ÓÐËÄÖÖ£¬ËûÃÇÖ®¼äµÄ·ÃÎÊȨÏޱȽÏͨ¹ýÒÔÏÂÒ»×éÀý×ÓÀ´½âÊÍ
Àý×Ócode£ºModiferDemo.java
package com.glust.blog.j2se;
public class ModiferDemo{
  //ËÄÖÖ·ÃÎÊȨÏ޵ıäÁ¿£¨ÊôÐÔ£©
  private int a;
  int b;//friendly
  protected int c;
  public int d;
  //·ÃÎÊÊôÐԵĽӿÚ
  public int getA(){
    return a;
  }
  public void setA(int a){
    this.a = a;
  }
}
Àý×ÓtestCode1£º TestModiferDemo1.java
import com.glust.blog.j2se.ModiferDemo;
class TestModiferDemo1{
  public static void main(String[] args){
    ModiferDemo obj = new ModiferDemo();
    System.out.println(" a is " + obj.a);//error,private·ÃÎÊȨÏÞÖ»ÄÜÔÚÀàÌåÖпɼû
    System.out.println(" b is " + obj.b);//error,friendly
    System.out.println(" c is " + obj.c);//error,protected
    System.out.println(" d is " + obj.d);
  }
}
Àý×ÓtestCode2£º TestModiferDemo2.java
import com.glust.blog.j2se.ModiferDemo;
class TestModiferDemo2 extends ModiferDemo{
  public static void main(String[] args){
    ModiferDemo obj = new ModiferDemo();
    System.out.println(" a is " + obj.a);//error£¡private·ÃÎÊȨÏÞÖ»ÄÜÔÚÀàÌåÖпɼû
    System.out.println(" b is " + obj.b);//error£¡friendly·ÃÎÊȨÏÞͬ°üÖÐµÄÆäËûÀà¿ÉÒÔ·ÃÎÊ
    System.out.println(" c is " + obj.c);//ÕýÈ·£¡protected·ÃÎÊȨÏÞ£¬×ÓÀàÖпÉÒÔ·ÃÎÊ
    System.out.println(" d is " + obj.d);
  }
}
Àý×ÓtestCode3£º TestModiferDemo3.java
package com.glust.blog.j2se;
import com.glust.blog.j2se.ModiferDemo;
class TestModiferDemo3{
  public static void main(String[] args){
    ModiferDemo obj = new ModiferDemo();
    System.out.println(" a is " + obj.a);//error£¡private·ÃÎÊȨÏÞÖ»ÄÜÔÚÀàÌåÖпɼû
    System.out.println(" b is " + obj.b);//ÕýÈ·£¡frien


Ïà¹ØÎĵµ£º

javaÉú³Édoc html

 
javaÉú³Éword,htmlÎļþ²¢½«ÄÚÈݱ£´æÖÁÊý¾Ý¿â
Posted on 2005-12-15 17:19 Kela ÔĶÁ(3126) ÆÀÂÛ(3)  ±à¼­  ÊÕ²Ø
       ÔÚ×î½üµÄÒ»¸öÏîÄ¿ÖÐÐèÒª½«Ò»¶Î×Ö·ûÀàÐ͵ÄÎı¾´æÎªword£¬html²¢Òª½«wordµÄÄÚÈݱ£´æÔÚÊý¾Ý¿âÖУ¬ÓÚÊ ......

java ·¢Óʼþ

import java.util.Properties;
import javax.activation.DataHandler;
import javax.activation.FileDataSource;
import javax.mail.*;
import javax.mail.internet.*;
/**
* ±¾³ÌÐòÓÃjavaÀ´ÊµÏÖEmailµÄ·¢ËÍ£¬ËùÓõ½µÄЭÒéΪ£ºSMTP£¬¶Ë¿ÚºÅΪ25£»<br>
* ·½·¨£ºÓÃSocket½øÐÐʵÏÖ£¬´ò¿ª¿Í»§¶ËµÄSocket£¬²¢Á¬½Ó ......

java¿ª·¢DB2³ÌÐò

1. JDBC Çý¶¯³ÌÐò

1.1 DB2 JDBC Type 2 Çý¶¯³ÌÐò

DB2 ¿Í»§»ú

²»½¨ÒéʹÓÃ

COM.ibm.db2.jdbc.app.DB2Driver µ÷ÓÃClass.forName() ·½·¨¡£

1.2 IBM DB2 ͨÓÃJDBC ºÍSQLJ Çý¶¯³ÌÐò

ÌṩÁËType 2 Á¬½ÓÐÔºÍType 4 Á¬½ÓÐÔ

¿ÉÒÔ½«Õâ¸öÇý¶¯³ÌÐòÓÃÓÚapp ......

¹ØÓÚJavaÕ»Óë¶ÑµÄ˼¿¼

 
­×÷ÕߣºÎ´Öª À´Ô´£ºÔ¹âÈí¼þÕ¾ ¼ÓÈëʱ¼ä£º2005-5-13¡¡Ô¹âÈí¼þÕ¾
­
Ô­Ì⣺ ¹ØÓÚJavaÕ»Óë¶ÑµÄ˼¿¼[/B] ­
1. Õ»(stack)Óë¶Ñ(heap)¶¼ÊÇJava[/B]ÓÃÀ´ÔÚRamÖдæ·ÅÊý¾ÝµÄµØ·½¡£ÓëC++²»Í¬£¬Java[/B]×Ô¶¯¹ÜÀíÕ»ºÍ¶Ñ£¬³ÌÐòÔ±²»ÄÜÖ±½ÓµØÉèÖÃÕ»»ò¶Ñ¡£ ­
­
¡¡¡¡2. Õ»µÄÓÅÊÆÊÇ£¬´æÈ¡ËٶȱȶÑÒª¿ì£¬½ö´ ......

JavaÕýÔò±í´ïʽµÄ½âÊÍ˵Ã÷

1.1.×Ö·û
x    ×Ö·û x¡£ÀýÈça±íʾ×Ö·ûa
\\    ·´Ð±Ïß×Ö·û¡£ÔÚÊéдʱҪдΪ\\\\¡££¨×¢Ò⣺ÒòΪjavaÔÚµÚÒ»´Î½âÎöʱ°Ñ\\\\½âÎö³ÉÕýÔò±í´ïʽ\\£¬ÔÚµÚ¶þ´Î½âÎöʱÔÙ½âÎöΪ\£¬ËùÒÔ·²ÊDz»ÊÇ1.1Áоٵ½µÄתÒå×Ö·û£¬°üÀ¨1.1µÄ\\,¶øÓÖ´øÓÐ\µÄ¶¼ÒªÐ´Á½´Î£©
\0n    ´øÓа˽øÖÆÖµ 0µÄ×Ö·û ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØÍ¼ | ¸ÓICP±¸09004571ºÅ