[Java] OSのTEMPに一時ディレクトリ作成

TempDir.java

class TempDir {
  private final File dir;
  public TempDir(String prefix) {
    String name = prefix + "_" + UUID.randomUUID().toString();
    dir = new File(System.getProperty("java.io.tmpdir"), name);
    boolean success = dir.mkdir();
    if (!success) {
      throw new RuntimeException(dir.getPath());
    }
    dir.deleteOnExit();
  }

  public String getPath() {
    return dir.getPath();
  }

  public void delete() {
    try {
      FileUtils.deleteDirectory(dir);
    } catch (IOException e) {
      throw new RuntimeException(e);
    }
  }
}