“[”的问题。。。。。。。。
import   java.io.*;
public   class   UpperCase  
{

/**
  *   Method   main
  *
  *
  *   @param   args
  *
  */
    public     void   toUpperCase(StringReader   sr,StringWriter   sw)
  {
  char   []   buf   =   new   char[1024];
  char   []   bufw   =   new   char[1024];
  int   len   =   0;
  int   j   =   0;
  len   =   sr.read(buf);
  Character   []   newbuf   =   null;
  for(int   i   =   0;i   <   len;i++)
  {
  Character   newbuf[i]   =   new   Character(buf[i]);
  if(newbuf[i].isLetter()   &&   newbuf[i].isLowerCase())
  {
  bufw[j]   =   newbuf[i].toUpperCase(newbuf[i].charValue());
  j++;
 
  }
  }
  sw.write(bufw);
  }

 
public   static   void   main(String[]   args)  
{
//   TODO:   Add   your   code   here
StringReader   sr   =   new   StringReader( "abcdef111111ghijklmnopqrstuvwxyz ");
StringWriter   sw   =   new   StringWriter();
UpperCase   uc   =   new   UpperCase();
uc.toUpperCase(sr,sw);
System.out.println(sw.toString());
}
}

老是提示缺少一个“[”，但是怎么看看不出来毛病，大虾帮忙！~
D:\JavaWork\UpperCase\UpperCase.java:22:   '] '   expected
                        Character   newbuf[i]   =   new   Character(buf[i]);

------解决方案--------------------
很多错误，类型，方法都不对。
改成下面，
public void toUpperCase(StringReader sr,StringWriter sw)
{
char [] buf = new char[1024];
char [] bufw = new char[1024];
int len = 0;
int j = 0;
try
{
len = sr.read(buf);
Character newbuf ;
for(int i = 0;i < len;i++)
{
newbuf = buf[i];
if(Character.isLetter(newbuf) && Character.isLowerCase(newbuf))
{
bufw[j] = newbuf.toUpperCase(newbuf.charValue());
j++;

}
}
sw.write(bufw);
}
catch (Exception e)
{
}

}

------解决方案--------------------
我试了就是好着呢啊，我用的eclipse3.2.2
------解决方案--------------------
都搞好咯..我来接分吧