GenerateNewFileThroughDeleteDataByHaijian

最新推荐文章于 2016-03-08 16:22:08 发布

原创最新推荐文章于 2016-03-08 16:22:08 发布 · 366 阅读

0 ·

CC 4.0 BY-SA版权

Infosys 专栏收录该内容

27 篇文章

订阅专栏

本文提供了一个使用Java进行文件读写的示例程序，通过该程序可以了解如何从源文件中读取数据，并将过滤后的数据写入到新文件中。具体地，此程序展示了如何跳过特定条件的数据行（例如行的第三个字符不是'1'），从而实现数据的筛选。

/*
* Created on Feb 22, 2016
*
* Copyright © 2006 ATPCO Confidential and Proprietary. All Rights Reserved.
*/
package allen;

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;

import org.junit.Test;

/**
* TODO Add your JavaDoc comments here
*
* @author ATPSAZD
* @version 1.0
*
*/
public class GenerateNewFileThroughDeleteDataByHaijian {

@Test
public void readFile() {

String inFile = "C:/Users/atpsazd/Desktop/GI_5589/FT_11/FT_11-RULES_USCA-FULL_TEXT";
String outFile = "C:/Users/atpsazd/Desktop/NoAct1_RULESUSCAFULL_TEXT";
BufferedWriter bw = null;
BufferedReader br = null;
try {
br = new BufferedReader(new FileReader(inFile));
bw = new BufferedWriter(new FileWriter(outFile));
String line;
while ((line = br.readLine()) != null) {
if (!line.startsWith("1", 2)) {
bw.write(line);
bw.newLine();
}
}
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} finally {
try {
if (bw != null) {
bw.flush();
bw.close();
}
if (br != null) {
br.close();
}
} catch (IOException ex) {
ex.printStackTrace();
}
}
}

}