import java.io.*;
class MyLineNumberReader
{
private Reader r;
private LineNumberReader lnr;
MyLineNumberReader(Reader r)
{
this.r=r;
}
public String myReadLine()throws IOException
{
LineNumber++;
StringBuilder sb=new StringBuilder();
int ch=0;
while((ch=r.read())!=-1)
{
if(ch=='\r')
continue;
if(ch=='\n')
return sb.toString();
else
sb.append((char)ch);
}
if(sb.length()!=0)
return sb.toString();
return null;
}
public void setLineNumber(int lineNumber)
{
this.lineNumber=lineNumber;
}
public int getLineNumber()
{
return lineNumber;
}
public void myClose()throws IOException
{
r.close();
}
}
class MyLineNumberReaderDemo
{
public static void main(String[]args)throws IOException
{
FileReader fr=new FileReader("abc.java");
MyLineNumberReader mylnr=new MyLineNumberReader(fr);
String line=null;
while((line=mylnr.myReadLine())!=null)
{
System.out.println(mylnr.getLineNumber()+":"+line);
}
mylnr.myClose();
}
} |
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