9.12每日总结

1.今天完成了哪些内容

面向对象的部分重新实现

 

2.遇到哪些问题

java将数组输入到txt文件中
FileWriter f1=new FileWriter("f1.txt");
String[] n= {"10","20","15","18","9","2","6","70","100"};
for(String x:n) {
f1.write(x);
f1.write("\t");
}