一个JAVABEAN的例子程序出问题。（在线）

[xddy]

counter.java
----------------

import java.io.*;
public class counter extends Object {
private String currentRecord =null;
private String path =null;
private BufferedReader file;


public String ReadFile(String filePath) throws FileNotFoundException
{
path = filePath;
file = new BufferedReader(new FileReader(path)) ;
String returnStr=null;
try
{
currentRecord = file.readLine();

}
catch(IOException e)
{
System.out.println(e+"读取数据错误");

}
if (currentRecord==null)
currentRecord="没有记录";
else
{
returnStr=currentRecord;
}
return returnStr;

}

public void WriteFile(String filePath,String counter) throws FileNotFoundException
{
path = filePath;
int Writerstr =Integer.parseInt(counter)+1;

try
{
//?????
//PrintWriter pw = new PrintWriter(new FileOutputStream(filePath));
PrintWriter pw = new PrintWriter(new FileOutputStream(path));
pw.println(Writerstr);
pw.close();
}
catch(IOException e)
{
System.out.println(e+"写入文件错误");
}

}


}

在DOS下可以编译通过。但执行时JSP页面是出现问题。
我就哪到JBUILDER 6中却连编译也通不过

[xddy]

"counter.java": Error #: 901 : package . stated in source C:\Documents and Settings\Administrator\jbproject\untitled3\src\untitled3\counter.java does not match directory untitled3

[Iforgot]

先保存一下，再编译看看，注意路径。

[Dickensi]

你应该把它放在C:\Documents and Settings\Administrator\jbproject\untitled3\src\counter.java
下，
或者给代码加个包！
package untitled3;

[xddy]

"counter.java": Error #: 308 : non-static method ReadFile(java.lang.String) cannot be referenced from a static context at line 11, column 7

[Dickensi]

你在哪里出错？
在哪里调用的ReadFile(java.lang.String)？

[xddy]

是这样的我在代码中加入
public static void main(String args[]) throws FileNotFoundException{

String cont="0";
cont=ReadFile("/count.txt");
WriteFile("count.txt",cont);

}
则编译报错

[xddy]

我还想问一个下,在写的代码中我打了问号的地方。两条语句有什么区别

[rao713]

gz

[ppdy]

问一下，是用JBUILD6编写的吗？

[alafeng]

没什么区别! 你的程序里path and filepath的值是一样的.

同时, 因为你在main()中调用readfile() and writefile() , but the main() method is staitc , so u must write the methods readfile() and writefile() to staitc. exp:
public static String readfile(...)
{...}

public static void writefile(...)
{...}