PrintWriter类实现文件的写 

 1 //文件的输出
 2 package homework;
 3 
 4 import java.io.File;
 5 import java.io.FileNotFoundException;
 6 import java.io.PrintWriter;
 7 import java.util.Scanner;
 8 
 9 public class Wenjian {
10 
11     public static void main(String[] args) throws FileNotFoundException {
12         String s1,s2,s3,s4,xm;
13         int score1,score2,score3,sum;
14         File f=new File("d:/abc.txt");
15         File f2=new File("d:/xyz.txt");
16         PrintWriter pw=new PrintWriter(f2);
17         Scanner in=new Scanner(f,"UTF-8");
18         s1=in.next();
19         s2=in.next();
20         s3=in.next();
21         s4=in.next();
22         String out=s1+"\t"+s2+"\t"+s3+"\t"+s4+"\t"+"sum";
23         pw.println(out);
24         while(in.hasNext()) {
25             xm=in.next();
26             score1=in.nextInt();
27             score2=in.nextInt();
28             score3=in.nextInt();
29             sum=score1+score2+score3;
30             //String out2=xm+"\t"+score1+"\t"+score2+"\t"+score3+"\t"+sum;
31             //pw.println(out2);
32             pw.printf("%s\t%d\t%d\t%d\t%d\n",xm,score1,score2,score3,sum);
33         }
34         in.close();
35         pw.close();
36         System.out.println("操作已完成");
37     }
38 
39 }

 

posted @ 2020-12-18 00:38  丁帅帅dss  阅读(142)  评论(0)    收藏  举报