新手请教怎样在Java里读文本文件中的内容# Java - 爪哇娇娃
c*y
1 楼
比如
一行里是
1 3 -1
如果我要读到这个行的每个数，最方便的
操作是怎样。
还有，要输出到文本文件时如何规定格式之类的。
在c++ 里，俺一般用
sscanf，sprintf.
谢谢。
一行里是
1 3 -1
如果我要读到这个行的每个数，最方便的
操作是怎样。
还有，要输出到文本文件时如何规定格式之类的。
在c++ 里，俺一般用
sscanf，sprintf.
谢谢。
xt
2 楼
Read line, then use StringTokenizer.
You can use OutputStream.print() I think.
【在 c**y 的大作中提到】
: 比如
: 一行里是
: 1 3 -1
: 如果我要读到这个行的每个数，最方便的
: 操作是怎样。
: 还有，要输出到文本文件时如何规定格式之类的。
: 在c++ 里，俺一般用
: sscanf，sprintf.
: 谢谢。
c*g
3 楼
The way java does this is kind of complicated (actually
it is similar to c++ way with std io), you open a file
with an FileInputStream, then wrap the FileInputStream with
InputStreamReader to become a Reader, then wrap the
InputStreamReader to become a BufferedReader, then
use readLine(), finally parse out. Kao.
【在 c**y 的大作中提到】
: 比如
: 一行里是
: 1 3 -1
: 如果我要读到这个行的每个数，最方便的
: 操作是怎样。
: 还有，要输出到文本文件时如何规定格式之类的。
: 在c++ 里，俺一般用
: sscanf，sprintf.
: 谢谢。
it is similar to c++ way with std io), you open a file
with an FileInputStream, then wrap the FileInputStream with
InputStreamReader to become a Reader, then wrap the
InputStreamReader to become a BufferedReader, then
use readLine(), finally parse out. Kao.
【在 c**y 的大作中提到】
: 比如
: 一行里是
: 1 3 -1
: 如果我要读到这个行的每个数，最方便的
: 操作是怎样。
: 还有，要输出到文本文件时如何规定格式之类的。
: 在c++ 里，俺一般用
: sscanf，sprintf.
: 谢谢。
c*s
4 楼
in Java 5.0 (was called 1.5.0 before) you can use scanf/printf same as in c
【在 c**g 的大作中提到】
: The way java does this is kind of complicated (actually
: it is similar to c++ way with std io), you open a file
: with an FileInputStream, then wrap the FileInputStream with
: InputStreamReader to become a Reader, then wrap the
: InputStreamReader to become a BufferedReader, then
: use readLine(), finally parse out. Kao.
【在 c**g 的大作中提到】
: The way java does this is kind of complicated (actually
: it is similar to c++ way with std io), you open a file
: with an FileInputStream, then wrap the FileInputStream with
: InputStreamReader to become a Reader, then wrap the
: InputStreamReader to become a BufferedReader, then
: use readLine(), finally parse out. Kao.
w*r
5 楼
ft.... you guys are really die-hard C junkie!!!
【在 c******s 的大作中提到】
: in Java 5.0 (was called 1.5.0 before) you can use scanf/printf same as in c
【在 c******s 的大作中提到】
: in Java 5.0 (was called 1.5.0 before) you can use scanf/printf same as in c
c*y
6 楼
3x
【在 c**g 的大作中提到】
: The way java does this is kind of complicated (actually
: it is similar to c++ way with std io), you open a file
: with an FileInputStream, then wrap the FileInputStream with
: InputStreamReader to become a Reader, then wrap the
: InputStreamReader to become a BufferedReader, then
: use readLine(), finally parse out. Kao.
【在 c**g 的大作中提到】
: The way java does this is kind of complicated (actually
: it is similar to c++ way with std io), you open a file
: with an FileInputStream, then wrap the FileInputStream with
: InputStreamReader to become a Reader, then wrap the
: InputStreamReader to become a BufferedReader, then
: use readLine(), finally parse out. Kao.
c*g
7 楼
Actually I do appreciate the elegent (or elephant?) way of Java io
to read a file after couples of year java coding. But it does look
so stupid for first time user, hehe.
【在 w*r 的大作中提到】
: ft.... you guys are really die-hard C junkie!!!
to read a file after couples of year java coding. But it does look
so stupid for first time user, hehe.
【在 w*r 的大作中提到】
: ft.... you guys are really die-hard C junkie!!!
w*r
8 楼
their IO interface is very elegent, clear-cut and highly flexible.
【在 c**g 的大作中提到】
: Actually I do appreciate the elegent (or elephant?) way of Java io
: to read a file after couples of year java coding. But it does look
: so stupid for first time user, hehe.
【在 c**g 的大作中提到】
: Actually I do appreciate the elegent (or elephant?) way of Java io
: to read a file after couples of year java coding. But it does look
: so stupid for first time user, hehe.
m*t
9 楼
FileReader would lend a little convenience here.
【在 c**g 的大作中提到】
: The way java does this is kind of complicated (actually
: it is similar to c++ way with std io), you open a file
: with an FileInputStream, then wrap the FileInputStream with
: InputStreamReader to become a Reader, then wrap the
: InputStreamReader to become a BufferedReader, then
: use readLine(), finally parse out. Kao.
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