[英]BufferReader in Java
我在Java中遇到BufferReader和OutputStream的问题。 我的目标是:当您从键盘上插入某些内容时-它会转到文件中。 我应该如何更正我的代码?
import java.io.*;
class IntoFile {
public static void main(String[] args) throws Exception{
try {
BufferedReader sisse = new BufferedReader(new InputStreamReader(System.in));
System.out.print ("Insert something: ");
String s = sisse.readLine();
byte[] buf = new byte[1024];
OutputStream valja = new FileOutputStream(new File(args[0]));
String line = null;
while ((line = br.readLine()) != null) {
}
valja.close();
}
catch (IOException e) {
System.out.println ("I/O: " + e);
}
}
}
谢谢!
我会使用Scanner和PrintWriter
C:\Documents and Settings\glowcoder\My Documents>javac Dmitri.java
C:\Documents and Settings\glowcoder\My Documents>java Dmitri
test
woohoo
quit
C:\Documents and Settings\glowcoder\My Documents>more out.txt
test
woohoo
quit
C:\Documents and Settings\glowcoder\My Documents>
码:
import java.io.*;
import java.util.*;
class Dmitri {
public static void main(String[] args) throws Exception {
Scanner in = new Scanner(System.in);
PrintWriter out = new PrintWriter("out.txt");
while(in.hasNextLine()) {
String line = in.nextLine();
out.println(line);
out.flush(); // not necessary every time, but simple to do so
if(line.equalsIgnoreCase("QUIT")) break;
}
out.close();
}
}
嗨,我提供了一个示例代码,您可以在用户从键盘输入字符或行后通过该代码编写文件。
try{
// Create file
FileWriter fstream = new FileWriter("out.txt");
BufferedWriter out = new BufferedWriter(fstream);
out.write("Hello Java");
//Close the output stream
out.close();
}catch (Exception e){//Catch exception if any
System.err.println("Error: " + e.getMessage());
}
在our.write传递中, line(variable)字符串参数和字符串将被写入该文件中。
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