//你怎么把main写到一个内部静态类里去了呢?JVM找不到那个main的。
//写出来就可以了。import java.io.*;public class GrepReader extends BufferedReader
{
String pattern;
public GrepReader(Reader in,String pattern)
{
super(in);
this.pattern=pattern;
}
public final String readLine() throws IOException
{
String line;
do
{
line=super.readLine();
}while((line!=null)&&line.indexOf(pattern)==-1);
return line;
}
public static void main(String args[])
{
String from="D:/e/q.txt";
String patt="H";
try{
//if(args.length!=2) throw new IllegalArgumentException("Wrong number of args");
GrepReader in=new GrepReader(new FileReader(from),patt);
String line;
while((line=in.readLine())!=null) System.out.println(line);
in.close();
}
catch(Exception e){
System.err.println(e);
System.out.println("Usage:java GrepReader$Test"+"<pattern><file>");
}
}
}
//写出来就可以了。import java.io.*;public class GrepReader extends BufferedReader
{
String pattern;
public GrepReader(Reader in,String pattern)
{
super(in);
this.pattern=pattern;
}
public final String readLine() throws IOException
{
String line;
do
{
line=super.readLine();
}while((line!=null)&&line.indexOf(pattern)==-1);
return line;
}
public static void main(String args[])
{
String from="D:/e/q.txt";
String patt="H";
try{
//if(args.length!=2) throw new IllegalArgumentException("Wrong number of args");
GrepReader in=new GrepReader(new FileReader(from),patt);
String line;
while((line=in.readLine())!=null) System.out.println(line);
in.close();
}
catch(Exception e){
System.err.println(e);
System.out.println("Usage:java GrepReader$Test"+"<pattern><file>");
}
}
}
import java.io.*;public class GrepReader extends BufferedReader
{
String pattern;
public GrepReader(Reader in,String pattern)
{
super(in);
this.pattern=pattern;
}
public final String readLine() throws IOException
{
String line;
do
{
line=super.readLine();
}while((line!=null)&&line.indexOf(pattern)==-1);
return line;
}
public static void main(String args[])
{
String from="D:/e/q.txt";
String patt="H";
try{
//if(args.length!=2) throw new IllegalArgumentException("Wrong number of args");
GrepReader in=new GrepReader(new FileReader(from),patt);
String line;
while((line=in.readLine())!=null) System.out.println(line);
in.close();
}
catch(Exception e){
System.err.println(e);
System.out.println("Usage:java GrepReader$Test"+"<pattern><file>");
}
}
}