(二)方法1
public void method1() {
FileWriter fw = null;
try {
//如果文件存在，则追加内容；如果文件不存在，则创建文件
File f=new File("E:\dd.txt");
fw = new FileWriter(f, true);
} catch (IOException e) {
e.printStackTrace();
}
PrintWriter pw = new PrintWriter(fw);
pw.println("追加内容");
pw.flush();
try {
fw.flush();
pw.close();
fw.close();
} catch (IOException e) {
e.printStackTrace();
}
}
(三)方法2
public static void method2(String file, String conent) {
BufferedWriter out = null;
try {
out = new BufferedWriter(new OutputStreamWriter(
new FileOutputStream(file, true)));
out.write(conent+"\r\n");
} catch (Exception e) {
e.printStackTrace();
} finally {
try {
out.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
(四)方法3
public static void method3(String fileName, String content) {
try {
// 打开一个随机访问文件流，按读写方式
RandomAccessFile randomFile = new RandomAccessFile(fileName, "rw");
// 文件长度，字节数
long fileLength = randomFile.length();
// 将写文件指针移到文件尾。
randomFile.seek(fileLength);
randomFile.writeBytes(content+"\r\n");
randomFile.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
