[Java] 파일명 일괄 변경

Published: 2018-09-01 by 놀이터흙이제맛

• Categories:
• java 42

• Tags:
• code-snippet 39
• file 5
• java 77
• java8 1
• lambda 1
• stream 2

required

• JDK8 or higher

import java.io.File;
import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.StandardCopyOption;
import java.util.stream.Stream;

public class ReplaceFileName {
    private static final String targetLocation = "c:/temp";
    private static final String prefix = "02-alarm-";
    private static final String suffix = "";
    private static final String destLocation = "c:/temp";

    public static void main(String[] args) throws Exception {
        Path path = new File(targetLocation).toPath();
        Stream<Path> list = Files.list(path);

        // list.forEach(System.out::println);

        list.forEach((k) -> {
            final String fileName = k.toString();
            final String newFileName = prefix
                    + fileName.substring(fileName.lastIndexOf(File.separator) + 1)
                    + suffix;
            Path newPath = new File(destLocation, newFileName).toPath();
            try {
                Files.move(k, newPath, StandardCopyOption.REPLACE_EXISTING);
            } catch (IOException e) {
                System.err.println(e);
                System.exit(0);
            }
        });

        list.close();
    }
}