99/5/21 Java-迴文判斷

import java.io.*;
import java.lang.Long;
import java.util.StringTokenizer;
import java.math.BigInteger;
import java.util.*;

public class fiveto
{
public static void main(String args[])
{
String op ="";
try
{
FileReader ip=new FileReader("940301.SM");
BufferedReader bip=new BufferedReader(ip);
String s1=bip.readLine();
String s2="";
for (int i=s1.length();i>0;i--)
{
char ch =s1.charAt(i-1);
s2=s2+ch;
}
if (s1.equals(s2))
{
op=s1+" is a palindrome.";
}
else
{
op=s1+" is not a palindrome.";
}

FileWriter opp=new FileWriter("op.txt");
BufferedWriter bopp=new BufferedWriter(opp);
bopp.write(op);
bopp.flush();

bopp.close();

}
catch(Exception e)
{
System.out.println("Exception");
}


}
}