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import java.io.File;
import java.io.FileReader;
public class Main {
public static void main(String[] args) throws Exception {
File f = new File("hello.txt");
FileReader fr = new FileReader(f);
char[] c = new char[(int) f.length()];
char[] cnew = new char[(int) f.length()];
StringBuffer sbuf = new StringBuffer();
fr.read(c, 0, (int) f.length());
int len = (int) f.length();
for (int i = 0, j = len - 1; i < len; i++, j--) {
cnew[i] = c[j];
sbuf.append(cnew[i]);
}
System.out.println(sbuf.toString());
fr.close();
}
}
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