如何解决Java-如何调用通用实例方法
class Connection
{
private Socket m_socket;
private ObjectOutputStream m_send;
private ObjectInputStream m_recv;
// Methods for initializing socket omitted
public <Type extends Serializable> Type readObject() throws IOException,ClassNotFoundException
{
return (Type)m_recv.readObject();
}
public static void main(String[] args) throws IOException,ClassNotFoundException {
Connection conn = new Connection();
// Doesn't work.
// error: -> expected
ServerResponse resp = conn.readObject<ServerResponse>();
}
}
为什么我不能使用提供的类型调用readObject,而是只能使用conn.readObject()
来调用它。
解决方法
检查一下!它对我有用。
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.io.Serializable;
import java.net.Socket;
public class Connection {
private Socket m_socket;
private ObjectOutputStream m_send;
private ObjectInputStream m_recv;
// Methods for initializing socket omitted
public <Type extends Serializable> Type readObject() throws IOException,ClassNotFoundException {
return (Type)m_recv.readObject();
}
public static void main(String[] args) throws IOException,ClassNotFoundException {
Connection conn = new Connection();
ServerResponse resp = conn.readObject();
// This is a full syntax
// ServerResponse resp = conn.<ServerResponse>readObject();
}
}
class ServerResponse implements Serializable {}
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