jsp生成html--replace

ziying

package ball.news;
import java.io.*;
import news.ReadTemplates;
public class ReplaceAll
{
private static Object a = new Object();
public ReplaceAll()
{
}

public String replace(String content,String flag,String temp)
{
  String str = null;

        try
        {
        //System.out.println("before-----"+content);
        String s1 = content;
            str = s1.replaceAll(flag,temp);
           // System.out.println("replace after-----"+str);
        }
        catch(Exception e)
        {
        System.out.println("replace all error:"+e.getMessage());
        }
        return str;

   }
   private static void a(String s)
    {
        File file = new File(s);
        if(!file.exists())
            file.mkdirs();
    }
}