给文件的每一行后面加一个String:context
代码
public void readFromFile(String src_file,String des_file,String content){
String str=null;
try{
FileReader f=new FileReader(src_file);
BufferedReader ff=new BufferedReader(f);
FileWriter f_out=new FileWriter(des_file,true);
BufferedWriter ff_out=new BufferedWriter(f_out);
while(ff.ready()){
str=ff.readLine();
ff_out.write(str+content+'\n');
}
ff_out.write("");//不加这个,最后一行写不完。。。
ff.close();
ff_out.close();
}catch(Exception e) {
e.printStackTrace();
}
}