/*这个程序是从键盘读入,然后再输出到文本文件中,输入exit结束,但是输出的文件中没有东东,而且我想是在输出文本中追加输入的内容,但这个是重写,怎么解决?*/
import java.io.*;
public class Word
{ /**
* @param args
*/
public static void main(String[] args)
{
String str = new String() ;
try
{
BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
PrintWriter out =new PrintWriter(new FileWriter("c:\\out.txt"));
while ((str=in.readLine())!="exit")
{
System.out.println(str);
out.println(str) ;
}
in.close() ;
out.close() ;
}
catch (Exception e)
{
e.printStackTrace() ;
}
}}
import java.io.*;
public class Word
{ /**
* @param args
*/
public static void main(String[] args)
{
String str = new String() ;
try
{
BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
PrintWriter out =new PrintWriter(new FileWriter("c:\\out.txt"));
while ((str=in.readLine())!="exit")
{
System.out.println(str);
out.println(str) ;
}
in.close() ;
out.close() ;
}
catch (Exception e)
{
e.printStackTrace() ;
}
}}
FileOutputStream(String fileName,boolean append)
append参数设为true就可以了追加了
PrintWriter out =new PrintWriter(new FileWriter("c:\\out.txt",true));
2,while ((str=in.readLine())!="exit")改为
while (!(str=in.readLine()).equals("exit"))
改成
while((str = in.readLine()).trim().equals("exit"))应该就行了
改成
while(!((str = in.readLine()).trim().equals("exit")))应该就行了
try
{
FileWriter fw = new FileWriter("c:\\out.txt",true);
BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
while(!((s=br.readLine()).equals("exit")))
{
fw.write(s);
fw.write("\n");
}
fw.close();
br.close();
}
catch (Exception e)
{
}