-1

这是一个旨在模拟连接池的java程序,但编译器说方法GetConnection()对于C类型是未定义的如何处理它......我是Java新手......你对我的连接有其他建议吗水池?或者我还可以添加什么实现?

package hello;

public class C {

public  static void  main(String[] args) {
 CConnection con=new CConnection();
 con=GetConnection();
 System.out.println(con.pos);
 }

 public static class CConnectionManager {
  private static final int MaxConSize=10;
  private CConnection[] connections ;
  {
  connections=new CConnection[MaxConSize];
  }


  public CConnection GetConnection(){
   for(int i=0;i<connections.length;i++){
    if(1==connections[i].status){
     continue;
    }
    else if(0==connections[i].status){
   connections[i].status=1;
   connections[i].pos=i;
   return connections[i];
   }
  }

  System.out.println("No connection available,Please wait");
   return null;
 }


  public void CloseConnection (CConnection con){

  if(-1==con.pos||0==con.pos){
      System.out.println("No such connection");
  }
  else
      connections[con.pos].status=0;
  }
}



 public static class CConnection  {
  private int status=0;
  public int pos=-1;
  public void execute(String sql){

  System.out.println(sql);
  }

}

}
4

1 回答 1

2

GetConnection()是您的内部CConnectionManager类的实例方法。
您只能在该类的实例上调用它。

于 2013-11-01T12:30:21.943 回答