class publicValue
{
//String hostName_IP = "localhost";
private String hostName_IP = "192.168.1.108";
private int portNumber = 1099;
private String portURL = "//" + hostName_IP + ':' + portNumber + '/';
public String getHostName_IP()
{
return hostName_IP;
}
public int getPortNumber()
{
return portNumber;
}
public String getPortURL()
{
return portURL;
}
public void String setHostName_IP(String _hostName_IP)
{
//此处编写修改 hostName_IP 的方法
}
}如上面所示,怎么写3个方法,分别修改publicValue类的私有成员hostName_IP、portNumber、portURL.
请高手指点,谢过啦!
{
//String hostName_IP = "localhost";
private String hostName_IP = "192.168.1.108";
private int portNumber = 1099;
private String portURL = "//" + hostName_IP + ':' + portNumber + '/';
public String getHostName_IP()
{
return hostName_IP;
}
public int getPortNumber()
{
return portNumber;
}
public String getPortURL()
{
return portURL;
}
public void String setHostName_IP(String _hostName_IP)
{
//此处编写修改 hostName_IP 的方法
}
}如上面所示,怎么写3个方法,分别修改publicValue类的私有成员hostName_IP、portNumber、portURL.
请高手指点,谢过啦!
public void String setHostName_IP(String _hostName_IP)
^
1 错误Process completed.
{
hostName_IP= _hostName_IP;
}
public void String setPortNumber(String _portNumber)
{
portNumber= _portNumber;
}
public void String setPortURL(String _hostName_IP ,String _portNumber )
{
portURL = "//" + _hostName_IP + ':' + _portNumber + '/';
} 这个意思?
{}
不能有的多个返回值把String去掉好了
{
//String hostName_IP = "localhost";
private String hostName_IP = "192.168.1.108";
private int portNumber = 1099;
private String portURL = "//" + hostName_IP + ':' + portNumber + '/';
public String getHostName_IP()
{
return hostName_IP;
}
public int getPortNumber()
{
return portNumber;
}
public String getPortURL()
{
return portURL;
}
public void setHostName_IP(String _hostName_IP)
{
//此处编写修改 hostName_IP 的方法
hostName_IP = _hostName_IP;
}
}
class A{
publicValue pubValue = new publicValue();
pubValue.setHostName_IP(String "192.168.1.108");
}编译就会有下面提示:
I:\Source\Try\CSA\CSA.java:44: 需要 <标识符>
pubValue.setHostName_IP(String "192.168.1.108");
^
I:\Source\Try\CSA\CSA.java:44: 需要 <标识符>
pubValue.setHostName_IP(String "192.168.1.108");
^
I:\Source\Try\CSA\CSA.java:44: 需要 ';'
pubValue.setHostName_IP(String "192.168.1.108");
^
3 错误Process completed.
不能同时存在两种返回类型,把String去掉!class publicValue
{
private String hostName_IP = "192.168.1.108";
private int portNumber = 1099;
private String portURL = "//" + hostName_IP + ':' + portNumber + '/';
public String getHostName_IP()
{
return hostName_IP;
}
public int getPortNumber()
{
return portNumber;
}
public String getPortURL()
{
return portURL;
}
public void setHostName_IP(String _hostName_IP)
{
hostName_IP=_hostName_IP;
}
}
public class A
{
public void main(String args[]){
publicValue pubValue = new publicValue();
pubValue.setHostName_IP("192.168.1.108");}
}
可以 而且面向对象编程都是这么干的。class A{
publicValue pubValue = new publicValue();
pubValue.setHostName_IP(String "192.168.1.108");
}
改成
class A{
publicValue pubValue = new publicValue();
pubValue.setHostName_IP("192.168.1.108");
}