this is a java program designed to simulate a connection pool but the compiler says the method GetConnection() is undefined for the type C how to deal with it ... I'm new in Java.. do you have other advice for my connection pool? Or what else implementation can I add?
这是一个用于模拟连接池的java程序，但是编译器说方法GetConnection()是不为C类型定义的，如何处理它……我新的Java . .你对我的连接池还有其他建议吗?或者我还能添加什么实现?
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);
}
}
}
1 个解决方案
#1
2
GetConnection() is an instance method of your inner CConnectionManager class.
You can only call it on an instance of that class.
GetConnection()是您的内部CConnectionManager类的实例方法。只能在该类的实例上调用它。
#1
2
GetConnection() is an instance method of your inner CConnectionManager class.
You can only call it on an instance of that class.
GetConnection()是您的内部CConnectionManager类的实例方法。只能在该类的实例上调用它。