javashy46.java

《JAVA2简明教程》课后习题及部分实验内容~

/********************************************************************************************
   					第8章习题5
	编写一个程序，比较两个文件是否相同。

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import java.awt.*;
import java.util.*;
import java.applet.Applet;
import java.io.*;
public class Javashy46 extends Applet{

   public static void main(String[] args) {
      InputStream file1;
      InputStream file2;
      byte buffer1[];
      byte buffer2[];
      int fileSize1 = 0;
      int fileSize2 = 0;

      try {
         file1 = new FileInputStream(args[0]);
         file2 = new FileInputStream(args[1]);
         fileSize1 = file1.available();
         fileSize2 = file2.available();
         buffer1 = new byte[fileSize1];
         buffer2 = new byte[fileSize2];

         if (fileSize1 != fileSize2) {
           System.out.println("The two files are different!");
           System.exit(0);
         }

         file1.read(buffer1);
         file2.read(buffer2);
         int cursor = 0;

         while (cursor < fileSize1) {
            if (buffer1[cursor] != buffer2[cursor]) {
               System.out.println("The two files are different!");
               System.exit(0);
            }
	    cursor++;
         }
         System.out.println("The two files are the same");
      }
      catch (FileNotFoundException e) {
         e.printStackTrace();
      }
      catch (IOException e) {
         e.printStackTrace();
      }
   }
}