FileWriter追加文本内容
package com.huawei.autofact.business;

import java.io.BufferedWriter;
import java.io.File;
import java.io.FileOutputStream;
import java.io.FileWriter;
import java.io.IOException;
import java.io.OutputStreamWriter;
import java.io.PrintWriter;

public class FileWriterDemo {

void writeMyFile() {
try {
//追加
FileWriter fw = new FileWriter("mydata.txt",true);
PrintWriter out = new PrintWriter(fw);
out.println("你好!");
out.close();
fw.close();
} catch (IOException e) {
e.printStackTrace();
}
}

public static void main(String[] args) {
FileWriterDemo test = new FileWriterDemo();
test.writeMyFile();
}
}