Deleting a Temporary Directory with Shutdown-Hook - Java File Path IO

Java examples for File Path IO:File Permission

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Description

Deleting a Temporary Directory with Shutdown-Hook

Demo Code

import java.io.IOException;
import java.nio.file.DirectoryStream;
import java.nio.file.FileSystems;
import java.nio.file.Files;
import java.nio.file.Path;

public class Main {
  public static void main(String[] args) {
    final Path basedir = FileSystems.getDefault()
        .getPath("C:/folder1/tmp/");
    final String tmp_dir_prefix = "test_";

    try {/* w  w w  . j  a va  2  s  .  co  m*/
      // create a tmp directory in the base dir
      Path tmp_dir = Files.createTempDirectory(basedir, tmp_dir_prefix);
      Runtime.getRuntime().addShutdownHook(new Thread() {
        @Override
        public void run() {
          System.out.println("Deleting the temporary folder ...");
          try (DirectoryStream<Path> ds = Files.newDirectoryStream(tmp_dir)) {
            for (Path file : ds) {
              Files.delete(file);
            }
            Files.delete(tmp_dir);
          } catch (IOException e) {
            System.err.println(e);
          }
          System.out.println("Shutdown-hook completed...");
        }
      });
      Thread.sleep(10000);
    } catch (IOException | InterruptedException e) {
      System.err.println(e);
    }
  }
}

Result


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