can you please trasnfer this code to java #include <iostream> #include <fstream>

Question

can you please trasnfer this code to java

#include <iostream>

#include <fstream>

#include <string>

using namespace std;

int main()

{

// Input file characters.

string alphas = "ABCDEFGHIJKLMNOPQRSTUVWXYZ ";

// Characters we should write in output file.

string ciphers = "XEv&rz@6\85e:|D)YLQ+`_nb#<^ ";

// variable to hold every read character.

char readChar;

// Input stream to read in data.

fstream inp_file("cipher.txt", fstream::in);

// Output stream to encrypt.

fstream out_file("out.txt", fstream::out);

// iterates through whole file char by char.

while (inp_file >> noskipws >> readChar) {

// finds index.

size_t alphas_index = alphas.find(readChar);

// if exists in range.

if (alphas_index < alphas.length()) {

// output the shifted character.

out_file << ciphers[alphas_index];

} else {

// output the same character.

out_file << readChar;

}

}

// Close files

inp_file.close();

out_file.close();

return 0;

}

Explanation / Answer

Here is code:

import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;

public class Cipher {

public static void main(String[] args) {
try {
// Input file characters.
String alphas = "ABCDEFGHIJKLMNOPQRSTUVWXYZ ";
// Characters we should write in output file.
String ciphers = "XEv&rz@6\85e:|D)YLQ+`_nb#<^ ";
FileReader reader = new FileReader("cipher.txt");
int character;
FileWriter writer = new FileWriter("output.txt", false);
// read character by character
while ((character = reader.read()) != -1) {
// finds the index
int index = alphas.indexOf((char)character);
// if not -1 means in range of alphas
if (index != -1) {
writer.write(ciphers.charAt(index));
}else
{
writer.write((char)character);
}
}
// close reader
reader.close();
writer.close();
} catch (IOException e) {
e.printStackTrace();
}
}

}

Output:

Input file :

ABCDEFGHIJKLMNOPQRSTUVWXYZ

Output:

XEv&rz@685e:|D)YLQ+`_nb#<

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