使用java的输入，输出流将一个文本文件的内容按行读出，每读一行就顺序添加行号，并写入到另一个文件 编写一个Java应用程序，使用Java的输入输出流技术将Fi...
java\u9898\u76ee\uff1a\u7f16\u5199\u4e00\u4e2a\u7a0b\u5e8f\u4f7f\u7528java\u7684\u8f93\u5165\uff0c\u8f93\u51fa\u6d41\u6280\u672f\u5c06\u4e00\u4e2a\u6587\u672c\u6587\u4ef6\u5185\u5bb9\u6309\u884c\u8bfb\u51fa\uff0c\uff0cimport java.io.BufferedReader;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.io.PrintWriter;
/**
*
* @author Felly
* @date 2008\u5e7412\u670829\u65e516:16:12
*
*/
public class InOut {
//\u8c03\u8bd5\u7684\u65f6\u5019\u6587\u4ef6\u548cclass\u6587\u4ef6\u5728\u540c\u76ee\u5f55\uff0c\u4e0d\u7136\u81ea\u5df1\u52a0\u7edd\u5bf9\u8def\u5f84
public final static String inFile="in.txt";//\u88ab\u5199\u6587\u4ef6
public final static String outFile="out.txt";//\u88ab\u8bfb\u6587\u4ef6
public void readAndWrite(String in,String out) throws
FileNotFoundException,IOException {
File inFile=new File(in);
File outFile=new File(out);
BufferedReader reader=new BufferedReader(new FileReader(outFile));
PrintWriter pw=new PrintWriter(new FileWriter(inFile));
String line="";
int index=0;
while((line=reader.readLine())!=null)//\u5faa\u73af\u5230\u6ca1\u6709\u5185\u5bb9\u4e3a\u6b62
{ index++;
line=index+line;//\u52a0\u4e0a\u884c\u53f7
pw.write(line);//\u5199\u5165\u4e00\u884c
}
//close
pw.close();
reader.close();
}
}
public class Test {
public static void main(String[] args){
File f=new File("D:/b.txt");
if(f.exists() && f.isFile()){
try {
FileInputStream input=new FileInputStream(f);
InputStreamReader reader=new InputStreamReader(input);
BufferedReader buffer=new BufferedReader(reader);
String line=null;
while((line=buffer.readLine())!=null){
System.out.println(line);
}
reader.close();
input.close();
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
System.out.println("\u6307\u5b9a\u6587\u4ef6\u4e0d\u5b58\u5728\uff01\uff01\uff01");
} catch (IOException e) {
// TODO Auto-generated catch block
System.out.println("\u8bfb\u53d6\u6587\u4ef6\u5185\u5bb9\u51fa\u9519\uff01\uff01\uff01");
}
}
}
}
\u5df2\u8fd0\u884c\u8fc7\uff0c\u6ca1\u6709\u95ee\u9898\uff0c\u6ce8\u610f\u6587\u4ef6\u8981\u662futf-8\u683c\u5f0f\u7684\u3002
代码如下：
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
public class App {
public static void main(String[] args) throws FileNotFoundException, IOException {
try (
FileInputStream inputStream = new FileInputStream(new File("d:\emp\\abc.txt"));
InputStreamReader streamReader = new InputStreamReader(inputStream);
BufferedReader reader = new BufferedReader(streamReader);
FileOutputStream outputStream = new FileOutputStream(new File("d:\emp\\output.txt"));
OutputStreamWriter streamWriter = new OutputStreamWriter(outputStream);
BufferedWriter writer = new BufferedWriter(streamWriter);
) {
int count = 1;
String line = null;
while ((line = reader.readLine()) != null) {
writer.write(count++ + ": " + line);
writer.newLine();
}
}
System.out.println("done.");
}
}
LineNumberReader
绛旓細浠ｇ爜濡備笅锛歩mport java.io.BufferedReader;import java.io.BufferedWriter;import java.io.File;import java.io.FileInputStream;import java.io.FileNotFoundException;import java.io.FileOutputStream;import java.io.IOException;import java.io.InputStreamReader;import java.io.OutputStreamWriter;public ...
绛旓細import java.io.BufferedReader;import java.io.File;import java.io.FileNotFoundException;import java.io.FileReader;import java.io.FileWriter;import java.io.IOException;import java.io.PrintWriter;/ author Felly date 2008骞12鏈29鏃16:16:12 / public class InOut { //璋冭瘯鐨勬椂鍊欐枃浠跺拰class...
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绛旓細import java.awt.event.*;import java.io.*;class Remember extends JFrame implements TreeSelectionListener,ActionListener { JTree tree=null;DefaultMutableTreeNode root;JButton jb1=new JButton("淇濆瓨");JButton jb2=new JButton("鍒犻櫎");JTextArea jta=new JTextArea(20,20);DefaultMutable...
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绛旓細vim缂栫爜鏂归潰鐨勫熀纭鐭ヨ瘑锛 1锛瀛樺湪3涓彉閲忥細 encoding---璇ラ夐」浣跨敤浜庣紦鍐茬殑鏂囨湰(浣犳鍦ㄧ紪杈戠殑鏂囦欢)锛屽瘎瀛樺櫒锛孷im 鑴氭湰鏂囦欢绛夌瓑銆備綘鍙互鎶 'encoding' 閫夐」褰撲綔鏄 Vim 鍐呴儴杩愯鏈哄埗鐨勮瀹氥 fileencoding---璇ラ夐」鏄痸im鍐欏叆鏂囦欢鏃堕噰鐢ㄧ殑缂栫爜绫诲瀷銆 termencoding---璇ラ夐」浠ｈ〃杈撳嚭鍒板鎴风粓绔紙Term锛夐噰鐢...
绛旓細FileInputStream file=new FileInputStream(//杩欓噷鍐欐枃浠惰矾寰勫拰鍚嶅瓧);BufferedReader reader=new BufferedReader(new InputStreamReader(file));//杩欓噷寰楀埌娴 while((String b=reader.readerLine())!=null){//杩欓噷閮芥枃浠朵竴琛屼竴琛岀殑閮 system.out.priteln(b);//杈撳嚭鍒版帶鍒跺彴 } 姹傞噰绾 绾墜鎵 ...
