help me

Write a program that reads a file and create a file with contents lower case

import java.io.*;

public class InputOutput
{

public static void main(String[] args) throws FileNotFoundException, IOException
 {
    File file1 = new File("inputfile.txt");
    File file2 = new File("outputfile.txt");
    BufferedReader in = (new BufferedReader(new FileReader(file1)));
    PrintWriter out = (new PrintWriter(new FileWriter(file2)));

    int ch;
    while ((ch = in.read()) != -1) 
	{
        if (Character.isUpperCase(ch)) 
	{
            ch = Character.toLowerCase(ch);
        }
        out.write(ch);
    }

    in.close();
    out.close();

have created a program but it will not compile or execute. Could someone fix the program?

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