一个Java读取文件的例子

一个Java读取文件的例子

目标：写一个Java类，读取自己，并按照原来的格式输出到控制台。

源代码：
TestFile.java

package com.topsoft.icisrpt.domain._05_qd.entity;

import java.io.*;

/**
* Created by IntelliJ IDEA.
* File: TestFile.java
* User: leizhimin
* Date: 2008-1-28 16:56:21
*/
public class TestFile {
public static void main(String args[]) throws IOException {
File f = new File("D:\\TestFile.java");
LineNumberReader lineNumberReader = new LineNumberReader(
new FileReader(f));

StringBuffer sb = new StringBuffer();
String lineStr = lineNumberReader.readLine();
while (lineStr != null) {
sb.append(lineStr).append("\n");
lineStr = lineNumberReader.readLine();
}
System.out.println(sb.toString());
}
}

控制台输出：

package com.topsoft.icisrpt.domain._05_qd.entity;

import java.io.*;

/**
* Created by IntelliJ IDEA.
* File: TestFile.java
* User: leizhimin
* Date: 2008-1-28 16:56:21
*/
public class TestFile {
public static void main(String args[]) throws IOException {
File f = new File("D:\\TestFile.java");
LineNumberReader lineNumberReader = new LineNumberReader(
new FileReader(f));

StringBuffer sb = new StringBuffer();
String lineStr = lineNumberReader.readLine();
while (lineStr != null) {
sb.append(lineStr).append("\n");
lineStr = lineNumberReader.readLine();
}
System.out.println(sb.toString());
}
}

呵呵，这是个测试例子，完成了。
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