java生成txt文件

java创建TXT文件,并写入数据

JavaJ# public class MyFile { 
private static String path = "D:/"; 
private static String filenameTemp; 

/** 
* 创建文件 
* 
* @throws IOException 
*/ 
public static boolean creatTxtFile(String name) throws IOException { 
boolean flag = false; 
filenameTemp = path + name + ".txt"; 
File filename = new File(filenameTemp); 
if (!filename.exists()) { 
filename.createNewFile(); 
flag = true; 
} 
return flag; 
} 

/** 
* 写文件 
* 
* @param newStr 
*            新内容 
* @throws IOException 
*/ 
public static boolean writeTxtFile (String newStr) 
throws IOException { 
// 先读取原有文件内容，然后进行写入操作 
boolean flag = false; 
String filein = newStr + "\r\n"; 
String temp = ""; 

FileInputStream fis = null; 
InputStreamReader isr = null; 
BufferedReader br = null; 

FileOutputStream fos = null; 
PrintWriter pw = null; 
try { 
// 文件路径 
File file = new File(filenameTemp); 
// 将文件读入输入流 
fis = new FileInputStream(file); 
isr = new InputStreamReader(fis); 
br = new BufferedReader(isr); 
StringBuffer buf = new StringBuffer(); 

// 保存该文件原有的内容 
for (int j = 1; (temp = br.readLine()) != null; j++) { 
buf = buf.append(temp); 
// System.getProperty("line.separator") 
// 行与行之间的分隔符 相当于“\n” 
buf = buf.append(System.getProperty("line.separator")); 
} 
buf.append(filein); 

fos = new FileOutputStream(file); 
pw = new PrintWriter(fos); 
pw.write(buf.toString().toCharArray()); 
pw.flush(); 
flag = true; 
} catch (IOException e1) { 
// TODO 自动生成 catch 块 
throw e1; 
} finally { 
if (pw != null) { 
pw.close(); 
} 
if (fos != null) { 
fos.close(); 
} 
if (br != null) { 
br.close(); 
} 
if (isr != null) { 
isr.close(); 
} 
if (fis != null) { 
fis.close(); 
} 
} 
return flag; 
} 

}