联创笔试题解答

题目:把数组String str[] ={"11","22","33","21","88"};插入文件test.bat中,再读取出来,然后倒序打印到控制台.
注:是朋友口述的,可能不很准确.

import java.io.BufferedWriter;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStreamWriter;

public class A4 {
	public static void main(String[] args) throws Exception {
		//存
		BufferedWriter out = new BufferedWriter(new OutputStreamWriter(
				new FileOutputStream("D:\\test.bat")));
		String str[] ={"11","22","33","21","88"};
		String s ="";
		for(int i=0;i<str.length;i++){
			s+=str[i]+",";
		}
		out.write(s, 0, s.length());
		out.close();
		//读
		int b = 0;
		try {
			FileInputStream fis = new FileInputStream("d:\\test.txt");
			String ss = "";
			while ((b = fis.read()) != -1) {
				ss+=String.valueOf((char)b);
			}
			String str1[] = ss.split(",");
			for(int j=str1.length-1;j>=0;j--){
				System.out.println(str1[j]);
			}
		} catch (IOException e) {
			e.printStackTrace();
		}
	}
}

也可以构造对象流

恩，可以的，欢迎大家写其它的方法阿！

上九点,下九点,周六不休息....不过题又多又难

fileReader

失之交臂啊！！！

string 改用 stringBuffer，可能会给面试官好点的映像