需要读取一个文本文件并写入一个新文件

Question

So I have this code where it prompts the user to type in a file name for the input file and the file name for the output file. I have a string called 'names' which will then be stored into the input file that was created by the user. I've got this part down.

import com.sun.org.apache.xpath.internal.SourceTree;

import java.io.*;
import java.util.Scanner;

public class Main {
public static void main(String[] args) throws IOException {

    FileWriter writer = new FileWriter(chooseFile("input"));
    FileWriter writer2 = new FileWriter(chooseFile("output"));
    String separator = String.format("%n");
    for(String name: names){
        writer.write(name);
        writer.write(separator);
    }


    }

}

public static File chooseFile(String type) {
    String fname = null;

    }

    return file;
}
}

Answer 1

Something like so should modify your names list to all caps.

for (int i = 0; i < names.length; i++) {
    names[i] = names[i].toUpperCase();
    // writer2.write(names[i]);
}