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作者 关于static的迷惑
AchillesA

  very com



发贴: 35
积分: 0
于 2004-07-31 19:47 user profilesend a private message to usersearch all posts byselect and copy to clipboard. 
ie only, sorry for netscape users:-)add this post to my favorite list
import c05.connection.*;
public class E11_ConnectionManager {
public static void main(String args[]) {
Connection c =
ConnectionManager.getConnection();
while(c != null) {
System.out.printlnCoffee;
c.doSomething();
c = ConnectionManager.getConnection();
}
}
} ///:~

//: c05:connection:Connection.java
package c05.connection;
public class Connection {
private static int counter = 0;//+--------这里不用static行不行
private int id = counter++;
Connection() {}
public String toString() {
return "Connection " + id;
}
public void doSomething() {}
} ///:~

//: c05:connection:ConnectionManager.java
package c05.connection;
public class ConnectionManager {
private static Connection[] pool = //+---------为什么是static
new Connection[10];
private static int counter = 0;
static { //+--------为什么这里要用static
for(int i = 0; i < pool.length; i++)
pool[i] = new Connection();
}
// Very simple -- just hands out each one once:
public static Connection getConnection() {
if(counter < pool.length)
return pool[counter++];
return null;
}
} ///:~
我对static的用法和作用的认识都太模糊了,有没有专门讲static的文章啊,或是谁给我仔细讲讲static




[转帖]面向对象的思维方法

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2683 关于static的迷惑 AchillesA 1214 2004-07-31 19:47

flat modethreaded modego to previous topicgo to next topicgo to back
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