hi, every one, I meet some code like the following:
import java.io.*;
public class Ppvg
{
public static void main(
String argv[])
{
Ppvg p=new Ppvg();
p.go();
}
public void go()
{
try
{
int ch=0;
DataInputStream dis=new DataInputStream(System.in);
dis.read();
}catch(Exception e){}
System.out.println("continue");
}
}
when i complie and run it, it will pause until a key is hit, then
it will print "continue" and end.
why do it run like that?
and I try to creat a file "system.in" by hand in the same directory,and modify the code to the following:
import java.io.*;
public class Ppvg
{
public static void main(String argv[])
{
Ppvg p=new Ppvg();
p.go();
}
public void go()
{
try
{
int ch=0;
DataInputStream dis=new DataInputStream(System.in);
while((ch=dis.read())>-1)
{
StirngBuffer buf=new StringBuffer();
buf.append((char)ch);
System.out.println(buf.toStirng());
}
}catch(Exception e){}
System.out.println("continue");
}
}
the programe will run, but nothing to be printed
someone can tell me why, thank you very much;
if there is any wrong whit the codes , please contact me.
